14.4 Valves (excluding stainless steel) Data List

├─14.4 Valve (excluding stainless steel) papers │ Development and application of a new high-pressure paste delivery pump - poppet valve pump │ Design optimization research on 1000MW nuclear power steam turbine valve activity test │ 1000MW steam turbine main steam valve seat surfacing process │ Design characteristics of 1000MW nuclear power steam turbine high-pressure valves │ Development of WB36 steel valves for 1000MW supercritical thermal power units │ Finite element analysis of temperature field and stress field of high-pressure main regulating valve of 1000MW ultra-supercritical steam turbine │ Failure analysis of high-pressure turbine speed regulating valve of 103-JT syngas compressor unit │ Analysis and preventive measures for the cause of pull and fracture of 103JAT lifting plate valve │ 150-pound cast corrosion-resistant flange connection gate valve │ 18-type coal press valve plate modification and application examples │ 1Cr9MoVNbN steel valve seat crack analysis │ 2.3t ingot austenitic gas valve steel rolling process exploration and production │ 203C explosion-proof plate blasting and HV202 valve post-combustion causes and measures │ 25000m^3/h air separation system main cooling liquid oxygen return valve leakage treatment │ 2500m3 blast furnace hot air valve and bellows replacement│ 2500m^3 blast furnace gas pressure regulating valve group gas leakage analysis and treatment│ Research on the structure of 27SiMnMoV steel needle valve body│ Design and experimental research of 2D electro-hydraulic digital high-frequency valve│ 2D valve-controlled electro-hydraulic exciter│ 2HA/2 reciprocating compressor gas valve and wear failure analysis and improvement│ Research on the opening and closing action response of the water valve of the 300MN die forging hydraulic press │ Analysis and treatment methods for the sinking of the high-pressure regulating valve seat of the 300MW steam turbine │ Development and promotion of the new multi-channel reversing valve group series for 3 to 5t loaders │ 40B219-2003 Technical conditions for the selection and piping design of steam drains and drain valves in petrochemical plants │ Flow field simulation calculation analysis of a new type of one-way valve under 40MPa ultra-high pressure conditions│ Design of 40T hybrid magnet low-temperature distribution valve box control system│ 40_Improved design of the control valve of the 50 loader planetary power shift transmission│ Diagnosis and analysis of faults related to the EGR valve of the 4DB engine│ Discussion and application of the test method of the converter valve side casing of the 500kV converter station│ 527WS_Finite element analysis of the type 1 side flap valve body │ Failure analysis of the hydraulic end valve box of the 5ZB-2800 fracturing pump │ Analysis of the working cylinder and filling valve of the 6000t hydraulic press │ Analysis of the causes of quenching cracks in the upper end cover of the 600MW steam turbine valve and preventive measures │ Structural strength and flow field analysis of the main steam valve of the 600MW ultra-supercritical steam turbine_Huangjinjin.caj │ 660 MW ultra-supercritical double reheat steam turbine valve assembly technology │ Finite element simulation analysis of 660 MW supercritical steam turbine main steam valve │ 660 MW supercritical steam turbine unit inlet valve thermal stress optimization │ 660 MW ultra-supercritical double reheat steam turbine valve assembly technology │ Application of 70 sand in the production of C5 steel valve castings │ Development of type 8 casing valve downhole sealing valve core │ A brief analysis of maintenance of simulated switching valve of A3 train braking system │ AGC servo valve failure analysis │ AirTAC solenoid valve │ Application of ANSYS in valve research and development │ Analysis of structural characteristics of API6DDBB and DIB type pipeline valves │ Analysis of the reasons for the small opening of the butterfly valve at the hood inlet of ARGG device │ Application of AR bispectrum in pressure reducing valve fault diagnosis │ ASME and RCC_Analysis of M-related nuclear first-level valve regulations │ Application of AutoLisp in valve driving torque calculation │ Design of BQ double eccentric semi-ball valve │ Research on sealing scheme of BW butt-welded valve maintenance and high pressure inspection │ C5 valve body cracking failure analysis C5 valve body cracking failure analysis │ Composition analysis of iron and nickel in C95800 valve castings │ Application of CAD in the three-dimensional design of triple eccentric butterfly valves │ Application of CAD technology in valve block hole system positioning system │ Application of CAD auxiliary variable design in valve design │ Structural design of CARR reactor natural circulation flap valve │ Research on design of CCS-200/40 high-pressure compressor combined air valve │ Optimal design of force characteristic curve of CF7454 rotary valve power steering gear │ Application of CFD in dynamic water closing simulation of inlet butterfly valve of hydropower plant │ Optimization design of water injection check valve port using CFD technology │ Application of CFX simulation analysis technology in troubleshooting of check valve plate jitter │ Research on installing pull-off valve on unloading hose of CNG storage and distribution station │ Design of 6 0MPa electric cylinder valve for CO 2 fixed fire extinguishing system │ Design of remote control valve group for CO 2 fixed fire extinguishing system │ Structure and performance analysis of CO2 cylinder valve │ Simulation study on fluid characteristics of CRH2 EMU relay valve│ Application and maintenance of DANFLO pressure relief valve in long-distance oil product pipelines│ Bench calibration test research of DCT clutch control valve│ Test and calculation of DEH valve flow correction curve│ Correction of DEH valve flow characteristic curve│ Research on DN100mm globe valve body forming process│ DN1200 electric high temperature gate valve packing seal failure analysis and repair│ Development of DN1500 extra large diameter high temperature double gate valve │ Troubleshooting and prevention of DN1600 electric blind valve during operation │ Failure analysis and repair of DN2000mm electric blind valve │ Noise analysis of DN200 shuttle check valve │ DQ16500 extra large valve electric device │ EN 13828-2003 Chinese version of construction valves - manually operated drinking water valves in construction, the materials of which are copper alloy and stainless steel - testing and requirements │ Application of Excel in butterfly valve design │ Contact analysis of F-1300 drilling pump liquid end valve seat │ Contact analysis of F-1600 mud pump valve seat │ Simulation analysis of fretting characteristics of F20 forklift multi-way valve │ Research on surfacing D802 of deep hole sealing surface of F92 valve body │ FD25b type solenoid valve cavitation failure and analysis│ FGJ001 valve cover processing machine│ Fault diagnosis and analysis of Fisher intelligent valve positioner in chemical industry applications│ Fisher intelligent valve positioner application in chemical equipment│ Application of Flexflo887 water hammer pressure relief valve in the stable operation of long-distance pipelines│ FQ647F-16C pneumatic coal injection ball valve DN32 design│ Comparative simulation analysis of FSAE racing car air intake restriction valve │ GE coal-water slurry gasification lock hopper sequence control and slag lock valve selection │ Application and localization of severe working condition valves for GSP gasifier │ Failure analysis and repair of Henry Pratt seawater butterfly valve │ Application analysis of HESMOR controller on voltage-type proportional valve │ Analysis of causes of valve seat cracks and preventive measures for HT272 type breathing safety valve │ Improvement of H-shaped automobile air conditioning thermal expansion valve │ ISO9000 series standards and valve product exports │ Practical application and transformation of ITCC system in double solenoid valve control loop │ Improvement of JT valve throttling refrigeration process │ Application of KIMRAY pneumatic membrane valve in Fuling shale gas in-station gas testing │ Development and application of KZF-96 controlled well cleaning sand control valve │ Application of LabVIEW in pure water hydraulic valve test acquisition system │ Application of LM-A4 LD valve controller │ Design and research of ultra-low temperature valves for LNG engineering │ Construction and installation problems and countermeasures of LNG cryogenic process ball valves │ Research on manual grinding process of sealing surface of LNG cryogenic stop valve │ Analysis of LNG cryogenic valve technology development trend │ Discussion on the application of emergency shut-off valves in LNG gasification stations │ Discussion on the production process of cryogenic valves for LNG │ LNG pipeline gallery key valve workshop air tightness test and tooling design │ LNG marine ultra-low temperature valve design research │ LonWorks intelligent electric valve control system and configuration function design │ Ls-Dyna fracturing pump valve strength analysis │ M4 series electro-hydraulic proportional multi-way valve characteristics study │ M701F unit main fuel flow valve main fuel flow valve differential pressure high analysis and treatment │ MATLAB optimized design of hydraulic reversing valve │ Characteristics and common problem solutions of MOKVELD axial flow control valve │ Localized development of NIIGATA PA5 dual-fuel diesel unit gas valve │ Weld layer structure of Ni-based alloy liquid film melting diffusion welding and its application in control valve throttling parts │ Numerical simulation of comparison of flow structures in N valve and U valve │ Research on changes in system performance parameters of ORC scroll expander bypass valve/opening valve switching conditions│ Finite element analysis and process optimization of valve seat of P-2200 high-pressure mud pump│ Localized development of valve spring for PA5 dual-fuel diesel unit│ Application of PC in accumulator tank-type hydraulically controlled slow-closing check butterfly valve│ Reliability analysis of PDS reciprocating pump valve disc│ PE gas valve * * Standard work progress │ Comparison between PE ball valves and metal valves │ Structural improvement of PFF65-140 hard-sealed arc flat gate valve │ Structural improvement of PLC-controlled hammer-type hydraulically controlled check butterfly valve │ Application of Pro/ENGINEER software in valve design │ Design and research of gas valve group in Pro/E environment │ Design and application of wall-adhering angle control valve in PTA device │ Causes and solutions for leakage of the packing seal of the control valve of the PTA device │ Selection of the discharge valve of the purification reactor of the PTA device │ Application of PVG32 multi-way valve │ Research on dual-voltage driver of high-speed electromagnetic switch valve with PWM pressure regulation │ Technical transformation and implementation of remote monitoring of the RT U valve chamber cut-off valve │ Failure analysis and treatment of the locking hopper valve of the S Zorb device │ In-depth maintenance of the S-Zorb program-controlled valve S-ZORB device program-controlled valve failure analysis and countermeasures│ S-Zorb device metal seal ball valve internal hardening method and material selection│ S42F8_Development of DN25 shape memory alloy trap│ SAMSON intelligent valve positioner│ Online replacement and thinking of SA/CL-1-EP valve positioner│ Development and industrial application of SFV full-pass guided float valve tray│ Working principle of SHAFER gas-liquid linkage valve remote control switch│ Selection of SIS valve actuator│ SKEG type bio-antibacterial diaphragm valve│ Application of Solidedge software in valve design│ Experimental study and formula fitting of flow characteristics of SPF type balance valve│ Experimental study of flow characteristics of SP type balance valve│ SRG lift check valve│ Simulation study of the impact of SRT33 mining dump truck synchronous valve on braking performance│ Finite element analysis of STXS135 plug valve body│ Application and improvement of Texaco coal gasification unit slag lock valve│ Failure analysis and treatment of TRT quick cut valve system debugging process│ Application of electro-hydraulic proportional valve control system of TRT unit │ Improvement of emergency shut-off valve control method of TRT unit │ Integrated design of gas quick cut valve driving device of TRT system │ Principle analysis and troubleshooting of balance valve for TY900 tunnel-type beam transport vehicle │ Processing of T-shaped sodium stop valve body │ Detection and fault diagnosis of U341E automatic transmission solenoid valve │ Digital design of valve based on model definition under UGNX │ Application of UG software in the design of serialized valve products│ Multi-objective optimization of V-shaped hydraulic valve port throttling characteristics│ V-shaped notch ball rotary control valve│ Production process of WCB valve cast steel│ Development of three-dimensional parametric design system for WD type fully welded ball valve│ WJF500_Microcomputer Metering Valve Pressure Tester│ XFF52-25 Type Oil Production Gate Valve Body Stress Analysis│ Experimental Research on Valve Stem Corrosion Resistance by YIC Corrosion Inhibitor│ YK6H Well High-Pressure Valve Corrosion and Protection Countermeasures│ Y-type Boiler Blowdown Valve│ Y Series Refrigerator Compressor Exhaust Valve Piece Fracture Failure Analysis and Improvement│ Z45T_W_Improvement of gate valve body structure │ Improvement of Z45 gate valve structure │ Design of ZA1 valve electric device │ Research on ZF4WG200 transmission electro-hydraulic shift control valve │ Improvement of ZG15Cr1Mo1V valve body casting process │ Repair welding of ZG15Cr1Mo1V valve casting │ ZL series loader variable speed control valve failure analysis │ ZQA19_4 Test of replacing the valve stem nut with ZCuZn28A14Fe3Mn3 │ Application of ZVC software in aromatic rotary valve control system │ Analysis and countermeasures for the fracture of the upstream valve cover of the Ф28mm oil pump │ Application of "three-valve group interlocking" in the coking unit │ "Solenoid valve" lecture-9 │ Development and application of an integrated double fixed valve pump │ One 40000 Design analysis of the molecular sieve air inlet valve control system of the m3 h oxygen generator │ Application of a calculation formula for the caliber of an incompressible fluid control valve │ Characteristics analysis of a stab-proof nipple of a well control throttle valve │ A new hydraulic valve simulation method │ Development of a butt welding stop valve for refrigeration │ Design and application of an unloading hydraulically controlled one-way valve │ Working principle of an automatic return flow valve for pumps that can be repaired and debugged online │ Structural design of an adjustable overpressure relief valve│ Design of a four-position four-way high-pressure ball valve│ Development of a mine-proof electric valve controller based on a single-chip microcomputer│ Research on a valve nonlinear correction scheme based on least squares support vector regression machine│ A pressure change rate control method and application based on a proportional valve│ A computer-controlled electric valve opening display method│ Design of a multi-channel switching valve│ A stop valve with a pilot ball valve│ Design and analysis of a self-locking drainage connector for a converter valve valve tower│ A method to improve the full-stroke step response performance of a proportional directional valve│ Design and simulation of a new servo valve driver│ Design and research of a new one-way throttle valve│ A new burst pressure release valve for transformers│ Development of a new water supply stop valve for solar water heaters│ Research on a new type of constant flow control valve│ Design of a new type of frictionless ball valve│ Research on a new type of intelligent flow control valve│ A new proportional air volume control valve│ Numerical simulation and experimental research on a new type of flow balance valve│ A new type of hot air relief valve│ Design and simulation analysis of a new type of ball shuttle valve│ Development of a new type of direct-acting electro-hydraulic servo valve│ Structure and analysis of a valveless three-piston hydraulic supercharger│ Design and experimental research of a mechanical normally closed pressure control valve│ Research on seismic impact resistance of a nuclear-grade instrument valve│ A model to manufacture multiple types of gate valves│ A method for measuring the air consumption performance of air suspension height control valves│ A reset mechanism of a hydraulic servo valve│ Design of a hydraulic control check valve│ Analysis and improvement of the port flow path of a hydraulic control one-way valve│ Design of a quick reversing valve for artificial heart│ Research on a proportional solenoid valve for automatic transmission│ Research on high-frequency hydraulic rotary valve for energy-saving hydraulic excitation technology│ Design of a new steady flow valve that can be applied to gas-liquid two-phase flow│ Development and application of an energy-saving check valve│ Performance analysis of a threaded two-way cartridge valve│ Design and calculation method of a mechanical shift buffer valve for vehicles│ A tire die forging process for a valve seat │ A study on a valve-type magnetic fluid wave energy direct power generation system │ A design scheme for a valve driver torque test bench │ A calculation method for the installation torque of a high-pressure gas cylinder valve │ A high-efficiency milling valve stem T-head fixture │ A study on flow saturation resistance of aerial work vehicle control valves │ A new drive system design for a high-speed solenoid valve │ A high-speed pulse valve dynamic characteristics │ Defect treatment and cause analysis of an abnormal action of the pressure relief valve of a 220kV transformer │ Cause analysis and preventive measures for a transformer oil injection caused by a pressure relief valve failure │ Analysis of the "abnormal" action of a cartridge valve accident pressure distribution valve │ Technical transformation of the tail water vent valve of Wanjiazhai Hydropower Plant │ Development and application of a three-action fixed valve oil pump │ Improvement of triple eccentric butterfly valve processing equipment │ Triple eccentric butterfly valve and its application │ Rapid optimization design of the rotation center of the triple eccentric butterfly valve │ Suitable area of the rotation center of the triple eccentric butterfly valve │ Development, characteristics and applications of the triple eccentric butterfly valve │ Research on the flow field and resistance characteristics of the triple eccentric butterfly valve │ Optimal design of the butterfly plate eccentricity angle and rotation center position of the triple eccentric butterfly valve │ Analysis of the influence of changes in the structural parameters of the triple eccentric butterfly valve on its butterfly plate interference │ Slag prevention and troubleshooting of three-stage gasifier lock bucket valve │ Three-rod butterfly valve transmission mechanism │ Solution to shrinkage hole (looseness) defect of three-piece valve body │ Performance comparison of three solid valve trays │ Development of three-stage electric feedback servo valve │ Characteristics analysis of electro-hydraulic servo valve in three-dimensional centrifugal environment │ Simulation study on the impact of volumetric efficiency of three-cylinder internal combustion pump distribution valve on the performance of the whole machine │ Triple valve pressure inspection and adjustment skills │ Calculation of the movement trajectory of the butterfly plate of the three-link butterfly valve │ Design of the electro-mechanical conversion mechanism of the three-way 2D digital valve │ Improvement of the cleaning assembly of the three-way plug valve │ Design and application of the three-way ball valve │ Modeling and simulation of the electro-hydraulic servo system of the three-way valve-controlled single-acting cylinder │ Analysis of the strength and stiffness of the main gate valve of the Shanghai combined sewage treatment project │ Improvement of the seat structure of the top-mounted ball valve │ Experience in maintenance of valves in front of the blower without stopping production │ Cleaning the dirt on the inlet check valve of the 4 HE∕4 CO2 compressor without stopping │ Development and application of downhole control valves for non-pressure wells │ Technology for replacing the main control valve of oil and gas wells in non-pressure wells │ Design of non-detachable liquefied petroleum gas cylinder valves │ Research on the water hammer protection effect of different types of air valves │ Test research on the performance of the relief valve of the aluminum alloy hydraulic valve island under different temperature conditions │ Calculation and comparison of water hammer characteristics of different types of valves │ Brief analysis of the evolving needs of the control valve industry │ Non-reducing water supply plastic stop valve │ Detailed description of stainless steel ball valve parameters │ Application of stainless steel ball valves in gas drainers │ Design of stainless steel ball valve automatic cladding machine │ Application and research of pressure-temperature ratings of stainless steel valves │ Propylene pipeline valve leakage failure analysis │ Dongfang 660 MW ultra-supercritical double reheat steam turbine ultra-high pressure main steam valve stem dynamic stress analysis │ Dongfang 660 MW ultra-supercritical double reheat steam turbine ultra-high pressure main steam valve stem dynamic stress analysis │ Discussion on the application of the two-time adjustment method in valve clearance inspection and adjustment │ Modeling and simulation of the two-stage double-nozzle baffle electro-hydraulic servo valve armature assembly │ Common faults and troubleshooting methods of two-stage electro-hydraulic proportional directional valves │ Analysis of the product level of medium-pressure disc type steam traps │ Technical transformation of medium-pressure steam system control valves │ Localization of Chinese valves │ Analysis of the current situation of the Chinese valve market │ Structural characteristics of hollow jet discharge valves and their application in hydropower stations │ Analysis of steady and sudden flow fields of centerline butterfly valves │ Analysis of fault characteristics that do not alleviate the failure of common brakes caused by leakage of relay valves │ Analysis of the impact of internal leakage of the low-pressure bypass valve of the intermediate reheat unit│ Research on opening balance holes in the balls of medium and high pressure ball valves│ Optimal design of medium and high-precision quantitative valves│ Design and simulation research of series ultra-high pressure relief valves│ Reasons and preventive measures for the automatic closing of the butterfly valve of the main transformer cooler│ Analysis and treatment of the noise causes of the main steam valve│ Analysis of issues related to the installation of cylindrical valves in the turbines of Wunonglong Hydropower Station│ Analysis and modification of causes of butterfly valve lock malfunction in Uluwati Hydropower Plant │ Modification of acetylene generator charging seal valve │ Localization development of high temperature and high pressure Y-type stop valve for ethylene plant │ Design and control strategy of digital proportional flow control valve for ethanol gasoline │ Research on warm compression molding of secondary reheat ultra-supercritical steam turbine valve manifold plate │ Application of secondary air valve on motorcycles │ Analysis of dynamic characteristics and stability of two-dimensional electro-hydraulic proportional reversing valve │ Secondary distillation valve problem handling and standard improvement suggestions │ Application of two-way cartridge valves in electro-hydraulic hammers │ Application of two-way cartridge valve technology and multi-flexible transmission in large rotary kilns │ Analysis and troubleshooting of direction control loop faults of two-way cartridge valves │ Modeling and simulation analysis of two-way proportional flow cartridge valves │ Cloud server and information assembly - DCT250 solenoid valve assembly innovation │ Optimization of spring parameters of downhole series heavy oil pump spool valve │ Application of downhole casing valve in Cai 551 well │ Development of permanent locking tool for downhole casing valve │ Mechanical mechanism design and test of downhole casing valve │ Design and indoor test of downhole casing valve core │ Design of downhole intelligent throttle and throttle valve flow field analysis │ Finite element analysis and structural optimization of the wellhead blowout preventer valve │ Discussion on the handle position of the three-position four-way reversing valve in the remote console of the well control equipment │ Discussing the role of the tank truck emergency shut-off valve from an accident │ Discussing the design principles of boundary conditions of the debugging equipment system from the startup noise failure of the gas pressure reducing valve │ Analyzing the selection and application of metal-sealed wear-resistant ball valves from the coal-to-liquids process │ Improving the quality of valve products based on standardization │ Comparison of instrument valve design specifications and standards │ Bonding diagram method for simulating the transient response of direct-acting relief valves │ Research on the dynamic characteristics of direct-acting cone relief valves using the transfer function method │ Research on nonlinear correction methods for servo proportional valves │ Potential dangers of shared power supply for servo valves │ Servo valve control motor system simulation and PID parameter optimization │ Theory and methods of dynamic correction of servo valve flow to improve the performance of electro-hydraulic position systems │ Research on phase change temperature control of giant magnetostrictive actuator for servo valve │ Numerical simulation and experimental analysis of servo valve orifice flow field │ Development status of low-shear flow control valve │ Analysis and treatment method of internal leakage of low-pressure bypass steam conversion valve │ Thoughts and discussion of low-pressure valve air pressure test pressure │ Development and application of low-pressure water seal valve │ Design and simulation of low-reversing impact direct-acting nonlinear proportional reversing valve │ Low leakage valve testing standards and applications │ Discussion of valve standards for cryogenic vessels │ Testing and research on stem sealing packing of cryogenic ball valves │ Design and application of shut-off valves on cryogenic oil transfer arm emergency release devices │ Several issues in the development of cryogenic valves │ Cryogenic valve selection requirements and performance evaluation criteria │ Cryogenic valves │ Research and analysis of sealing performance of cryogenic valves │ Brief analysis of heat treatment methods of LCB and LCC steel for cryogenic valves │ Design and installation of cryogenic valves │ Research and analysis of cryogenic valve design technology │ Design calculation of cryogenic valve bonnet neck length │ Research on cryogenic valve stem trapezoidal thread tolerance │ Improvement of cryogenic valve bonnet and sealing structure │ Discussion of cryogenic valve bonnet neck length and cryogenic ball valve installation direction │ Valve selection for water supply network │ Selection of water pump control valves in water supply system │ Selection of gate valves and butterfly valves for water supply systems │ Common problems and solutions in the construction of pipe valves in heating projects │ Development of a convenient high-pressure valve changer │ Processing of valve body sealing pairs of inverted non-impact check valves │ Application of eccentric semi-ball valves in new acetylene recovery units │ Eccentric ball valves │ Analysis of the prestage flow field of the deflection plate jet servo valve │ Experimental analysis of the discharge flow pattern of the cyclone separator material leg wing valve system of the catalytic cracking unit │ Failure analysis of the slide valve of the catalytic cracking unit│ Configuration of the flue gas turbine inlet valve of the catalytic cracking unit│ Comparison of the performance and structure of two high-temperature gate valves used in the catalytic cracking unit│ Valve for the catalytic cracking unit│ Failure maintenance experience of the electro-hydraulic slide valve of the catalytic cracking unit│ Improvement of the pneumatic slide valve of the catalytic cracking unit│ Discussion on the causes of stem erosion of the double-action slide valve of the catalytic unit│ Failure and analysis of the slide valve of the catalytic unit│ Failure analysis of flue gas pipeline valves in catalytic units │ New method for installing soft packing of special valves in catalytic units │ Intelligent improvement of pneumatic motor valve control system of catalytic reforming units │ Structural characteristics of high-pressure bypass station and high-pressure bypass valve of 300MW unit of Yuanbaoshan Power Plant │ Analysis of common faults of liquid filling valves │ Analysis of the initial pressure building process of pilot-operated two-way solenoid valves │ Flow field CFD analysis of pilot-operated non-static water pressure relief valve │ Theoretical analysis of static characteristics of pilot-operated relief valve │ Simulation and experimental research of pilot-operated pure water relief valve │ Design of pilot-operated high-pressure clean water stop valve │ Assembly and installation process of cylindrical valve of Guangzhao Hydropower Station │ Application of light sprocket in valve chain transmission │ Analysis of structural characteristics of brake valve core of full power hydraulic braking system │ Research on the selection technology of the instrument isolation valve on the top of the full-capacity LNG storage tank│ Rapid design method of the pressure regulating valve of the full oil pressure control turbine│ Research on the performance simulation and structural optimization of the filling valve of the full hydraulic brake system│ Analysis and research on the current status of the fully welded pipeline ball valve technology│ Selection and quality control of the fully welded pipeline ball valve material│ Selection and quality control of the fully welded pipeline ball valve body material│ Application of fully automatic sector tower bottom valve in coke tower modification│ Structural improvement and optimization of downhole casing valve in underbalanced drilling in the whole process│ Pressure prediction of casing valve in underbalanced drilling in the whole process│ Full metal sealing valve plate│ Design and calculation of six-way reversing valve│ Technical analysis and test results of valve port design improvement of proportional displacement valve and constant power valve│ Analysis on the transition process when the water purification plant at the end of a long-distance water pipeline shuts down the valve│ Research on the T-shaped groove strength of the gate valve gate│ Research on the opening control algorithm of the proportional flow valve with a pressure compensator│ Valve positioner control method and implementation with reverse PWM│ Energy-saving water trap│ Discussion on the causes of internal pressure self-sealing valve leakage and selection of design parameters│ Principle and experimental research on the soft cone shell single valve body piezoelectric pump with unequal internal and external tapers│ Application of internal curve pneumatic motor valve actuator on the pump inlet valve│ Visual calculation and experimental verification of wall pressure distribution of internal flow slide valve│ Numerical simulation and structural optimization of the flow field of internal flow poppet valve│ Discussion on calculation of spring preload force of parallel gate valve with built-in spring│ Let’s talk about the problem of the handle position of the three-position four-way rotary valve in the remote console of the blowout preventer│ Analysis of the accident causes of outdoor flat electric gate valves in winter│ Analysis of oil leakage of impact turbine ball valves│ Structural characteristics and applications of cold wall slide valves and hot wall slide valves│ Gel valves│ Research and application of gel valve completion technology│ Analysis of leakage causes and structural improvements of pressure reducing manual proportional pilot valves│ Research on pressure reducing valves and their water saving│ Application of pressure reducing valve in single piston rod hydraulic cylinder speed control circuit │ Analysis and programming of CNC machining process of pressure reducing valve disc │ Measures to reduce vibration and noise of control valve │ Design analysis of temperature reducing and pressure reducing control valve │ Design and calculation of temperature reducing and pressure reducing valve │ Condensate recycling and utilization transformation and equipment selection and benefit analysis │ Selection of condensate recovery method │ Selection of traps in condensate recovery system (1) - performance comparison analysis │ Selection of traps in condensate recovery system (2) - selection calculation discussion │ Analysis and comparison of condensate recovery system │ Analysis and calculation method of energy saving effect of condensate recovery system │ Reasonable recovery and utilization of condensate │ Several steam condensate recovery methods │ Lug wafer type and wafer type butterfly valve │ Analysis of the causes of cam deflection valve tie rod fracture failure│ Production and quality control of outlet low-pressure valve castings│ Research on conductance of high vacuum valves during molecular flow│ Fault diagnosis and treatment measures of molecular sieve switching valves│ Failure analysis and treatment of ORBIT track ball valves for molecular sieve devices│ Research on the application of diverter and collector valves in the frame vehicle traveling system│ Discussion on the use of solenoid valves for shut-off valves to achieve relatively continuous control│ Torque measurement device for train pressure valves│ Analysis of overvoltage using the characteristics of arrester resistor valves│ Research on key technologies of brake valve maintenance digital system│ Operation and maintenance of PSA hydraulic programmable valve for hydrogen production│ Analysis, processing and summary of operating faults of PSA programmable valve of hydrogen production device│ Application of power flow diagram in modeling of valve-controlled gear clutch│ Performance analysis of power spectrum in fault diagnosis of speed control valve│ Jig for processing small and medium-sized wafer butterfly valve body shaft hole│ Analysis of processing technology of cylinder head valve seat guide in machining center│ High-precision rotary boring die for processing butterfly valves│ Drilling and boring fixture for processing valve cover hole│ High-efficiency fixture for processing valve cover│ Design of DC stop valve for hydrocracking unit│ Characteristics and selection of high-pressure valve for hydrocracking│ Application of pneumatic shut-off valves in emergency venting links in hydrogenation units│ Material selection and quality control of valves for hydrogenation units│ Development of high-pressure forged steel gate valves for hydrogenation units│ Powered high-speed intake and exhaust valves│ Calculation and analysis of static characteristics of power steering gear compound edge bevel rotary valves│ Effect of power steering gear rotary valve outer circle runout on static characteristics│ Calculation method of dynamic pressure feedback servo valve time constant│ Discussion on the selection of traps in chemical production │ Selection of commonly used metal valves in chemical plants 6 │ Selection methods of commonly used valves in chemical design │ Research on selection methods of commonly used valves in chemical design │ Analysis of strategies for selection of commonly used valves in chemical design │ Arrangement of common valves in chemical design │ Analysis of selection strategies of commonly used valves in chemical design │ Characteristic analysis of matching asymmetric valve control asymmetric cylinder system │ Leakage performance of cross-turn valve tray │ Research on plate efficiency of cross-turn valve tray │ Semi-automatic ball turning machine and processing of ball valve parts │ Application of one-way plate valve in pneumatic conveying │ One-way metal seal ball valve │ Analysis and research on the influence of one-way valve on gas flow direction in double pressurized gas line │ Characteristics and application of one-way valve_Peng Xiwei │ Selection of anti-aging agent for one-way valve glue │ Exploration and research on the application of single-seat valves in multi-phase media │ Analysis of the influence of single-coil magnetorheological valve core structure on pressure drop characteristics │ Analysis of operating failure of wellhead throttle valve in South Yolotan Gas Field │ Analysis and treatment of the clearance problem between horizontal high-pressure main steam valve disc and valve seat │ Numerical simulation and experimental study of three-dimensional flow field of unloading valve │ Simulation research on the dynamic characteristics of constant pressure valves in pressure-flow control systems │ Research on the application of pressure and displacement monitoring systems in cylinder head guide valve seat pressing │ Research on structural improvement of pressure difference negative feedback balancing valves │ Research on performance of piezoelectric bimorph driven pneumatic servo valves │ Research on control strategies of piezoelectric pneumatic servo valves │ Analysis and improvement of leakage causes of gas cylinder ball valves for compressed natural gas │ Double valve check valves for compressors │ Axiomatic design of compressor reed valve group │ Failure analysis of compressor valve plate and ion nitriding process │ Design and finite element analysis of fracturing pump valve box without intersecting lines │ Research on factors affecting fatigue life of fracturing pump valve box │ Design and research on structural improvement of forklift multi-way valve tilt self-locking valve │ Design of forklift control valve test bench measurement and control system In the forklift valve test bench project, database technology is used to realize Kingview data storage and data exchange with VB │ Test and simulation research on dual-active proportional two-way throttle valve │ Double eccentric semi-ball valve │ Design of the sealing structure of double eccentric inclined plate butterfly valve │ Application of double eccentric butterfly valve in metallurgical system and related analysis and calculation │ Design of double eccentric metal seal ball valve_Yu Deshui_Zhang Aiping│ Design of double eccentric metal seal butterfly valve│ Fracture phenomenon and analysis of double-action slide valve fixing bolts│ Numerical simulation and test of dual-pressure control pressure reducing throttle valve│ Nonlinear modeling and linearization of double-nozzle baffle servo valve│ Development and industrial application of double-layer solid valve tray│ Double floating pneumatic stop valve│ Application of double solenoid valve configuration in petrochemical equipment│ Research on the control mode and dynamic performance of bistable solenoid valves │ Simulation evaluation and performance analysis of dual-coil magnetorheological valves │ Analysis of pressure drop characteristics of dual-coil magnetorheological valves │ Structural design of dual-coil magnetorheological valves and electromagnetic field simulation analysis │ Application of fractal characteristics of bispectral slices in fault diagnosis of pressure reducing valves │ Design of bimetallic sheet traps │ Analysis and treatment of oil leakage faults in vibration valve blocks of twin-drum vibratory rollers │ Design of double gate plate gate valve│ Design of double seat stop plug valve and contact stress analysis│ Setting of double valves│ Discussion on the design scheme of multi-functional pump with double valve core proportional valve│ Dry plate pressure drop of double valve heavy float valve tray│ Regulation and analysis of the relief pressure of double isolation pipeline ball valve cavity│ Dehydrogenation reaction occurring in the sampling valve of oil-filled power equipment│ Application of anti-theft device for sampling valves │ Research on Troubleshooting of Pressure Swing Adsorption (PSA) Programmed Valve │ Analysis and Maintenance of Pressure Swing Adsorption Hydraulic Programmed Valve Faults │ Treatment of Programmed Valve and Solenoid Valve Faults in Pressure Swing Adsorption Devices │ Analysis of Common Faults of Programmed Butterfly Valve in Pressure Swing Adsorption Devices │ Discussion of Internal Leakage Checking Methods of Programmed Valve in Pressure Swing Adsorption Devices │ Research on multiplexed flow conversion technology with Yanbian phase shift of the transformer valve side winding │ Design and research of variable hole ball valve │ Application of variable diameter pigging valve on the Yan-Xi product oil pipeline │ Calculation and optimization matching of fatigue life of pressure regulating spring of variable speed control valve │ Fuzzy reliability design of fatigue strength of variable frequency refrigeration compressor reed valve │ Frequency variable speed butterfly valve │ Application and common fault analysis of superimposed pressure reducing valve │ Application of new technology of superposition valve in combined machine tools │ Numerical study on constant flow characteristics of constant flow valve of controllable quantitative dispenser │ Design of wellbore pressure control valve with measurable pressure and valve position │ Selection of main control valve for combustible industrial gas pipeline network │ Adjustable pressure downhole check valve │ Adjustable valve body inclined hole tire │ Adjustable proportion liquid mixed flow valve │ Precautions for selection of various valves │ The influence of synchronicity on the performance of the "double-cylinder multi-valve" electro-hydraulic vibrating table │ Coaxial transmission valve electric device │ Research and application of back-throw check valve │ Structural design of the outlet combination valve of the governor pressure oil pump of Xiangjiaba Hydropower Station │ Application of nickel-containing materials in flue gas desulfurization valves │ High-pressure liquid-filling valve with detectable opening and closing status │ Design of straw-type online sampling valve group │ Calculation of the breathing valve and its breathing volume │ Selection of breathing valves in oil and gas storage tanks │ Summary of the condensate recovery and transformation project of Hohhot Petrochemical Company │ Discussion on the installation technology of large-scale water inlet ball valves in Xiangshuijian pumped storage power station │ Design improvement of commercial vehicle exhaust brake valves │ Research and countermeasures for contamination failure of nozzle baffle servo valves │ Design and application of jet pulse cleaning valves │ Installation surface of four-port plate hydraulic directional control valve GB/T 2514-93 │ Reliability evaluation of four typical solenoid valve combinations │ Analysis of capillary fracture of four-way reversing valve │ Design of a special machine for automatic expansion of the D connection plane of the four-way valve │ High economic benefits of recovering condensed water │ Analysis of common problems of material return and slag discharge cone valves │ Rotary multi-station brass gate valve assembly machine │ Research on the application of rotary buffer valves in large inertia load systems │ Design of step experimental device for hole-shaped 2D servo valve core displacement │ Theory research and application of cementing and fracturing pump valves │ Installation and maintenance technology of butterfly valves for cement trucks │ Analysis of nitrogen drainage technology of fixed gas lift valves │ Fixed metal bellows ball valves │ Processing of fixed ball valves 3 │ Structural improvement and application of fixed valve pull-out oil pumps│ Application of solid-state decouplers in oil and gas pipeline valve chambers│ Analysis of valve switching test of domestic imported 600MW supercritical steam turbine unit│ Research on new domestic intelligent valve positioners│ Design of domestic dilution water valve controller│ Application of the first domestic electric high-temperature gate valve in catalytic cracking units│ Successful application of domestic labyrinth valves in offshore oil production│ Comparison and analysis of commonly used valve materials at home and abroad 8 │ Analysis and comparison of valve structure length standards at home and abroad 10 │ Development status and prospects of valve locks at home and abroad │ Discussion on the current use situation and management of domestic steam traps │ Foreign nuclear power plant valves │ Research on foreign droplet breaking mechanism and development of new wellhead throttle valves │ Structure and characteristics of foreign descaling valves │ * * Analysis of the standard industrial valve pressure test (GB∕T 13927-2008) │ Internationally used cast steel materials for valve bodies │ Application of dome valves on pulverized coal injection tanks │ Failure analysis and maintenance of dome valves │ Design of dome valves │ Processing the inner surfaces of both ends of the valve body of "353 counterflow valve" on a CNC lathe │ Working principle and common fault analysis of pipeline ball valves in use │ Online non-stop production to solve the problem of valve leakage │ The practice of online replacement of wet gas tank blowdown valves │ Innovation and practice of online professional maintenance and management models for electric valves │ Research on valve fault diagnosis of the secondary mechanism of piston air compressors for subway engineering vehicles │ Discussion on installation and construction technology of combined air valves in subway tunnels │ Selection of valve driving devices for type testing │ Discussion on Ni-P electroless plating process on the surface of buried ball valves │ Selection and management of valves in the urban water supply network │ A review of life extension methods for urban gas pipeline network valves │ Analysis of valve failure causes and preventive measures on the Chengdao Center No. 2 platform │ Dynamic contact analysis of fracturing pump pump valves based on ANSYS/LS-DYNA │ Valve flow field analysis and structural optimization of can filling valves based on FLUENT │ PCA-based reciprocating compressor valve failure abnormality monitoring method │ Research on digital valve-controlled cylinder position control system based on Proteus │ Research on dynamic performance of electromagnetic ball valve based on 20-Sim │ Finite element analysis of high-pressure ball valve sphere based on ABAQUS │ Simulation analysis of dynamic characteristics of threaded cartridge balance valve based on AMES im │ Modeling and simulation of double-cylinder superimposed valve plate gas-filled shock absorber based on AMESim │ Research on dynamic characteristics of inverse proportional relief valve based on AMESim │ Simulation research on electro-hydraulic control valve based on AMESim│ Quantitative analysis of damping hole value in AMESim cartridge relief valve│ Simulation analysis of F-type π bridge relief valve based on AMESim│ Simulation analysis of HD4070PR automatic transmission main pressure regulating valve based on AMESim│ Matching optimization analysis of pilot valve and multi-way valve based on AMESim│ Modeling and simulation analysis of pressure reducing valve based on AMESim│ Fault simulation research of superimposed relief valve based on AMESim│ Modeling and simulation of fixed difference pressure reducing valve based on AMESim│ Modeling and simulation of excavator load sensing multi-way valve based on AMESim│ Dynamic characteristics analysis of a certain type of unloading valve based on AMESim│ Modeling and analysis of proportional relief valve loading system based on AMESim│ Simulation and analysis of proportional valve controlled hydraulic cylinder system based on AMESim│ Research on the characteristics of the pneumatic valve-controlled cylinder system based on AMESim │ Research on the pressure cut-off valve of the tractor hydraulic system based on AMESim │ Test and simulation research on the electro-hydraulic servo valve based on AMESim │ Research and simulation on the flow control of the electro-hydraulic proportional directional valve based on AMESim │ Optimization design of the magnetic circuit structure of the fuel injection solenoid valve based on Ansofl │ Multi-physics modeling of the proportional solenoid valve based on the combination of Ansoft and AMESim │ Based on ANSYS APDL and FLUENT Journal's hydraulic poppet valve flow field parametric simulation software design │ Finite element analysis of large stainless steel valve bodies based on ANSYS │ Flow field analysis and structural optimization of hydraulic poppet valves based on ANSYS │ Stress and seismic analysis of electric stop valves based on Ansys │ Finite element analysis of drilling pump valves based on ANSYS │ Analysis of leakage problems of thin slag discharge gate valves based on ANSYS │ Pressure reducing valve fault diagnosis based on AR bispectrum and fractal box dimension │ Fault diagnosis of pressure reducing valve based on BP network │ Research on three-eccentric butterfly valve interference analysis software based on C#.NET │ Valve block investment mold design based on CAD/CAM technology │ Design of electro-hydraulic valve controller based on CAN bus technology │ Design of wireless valve position transmitter based on CC2530 │ Denoising of leakage acoustic emission signals in oil depot valves based on CCA and WT │ Valve chamber data acquisition system based on CDMA │ Analysis of the resistance characteristics of the stop valve based on CFD technology │ Numerical simulation analysis of the flow characteristics of the throttle valve based on CFD technology │ Research and optimization of the flow field characteristics of the triple eccentric butterfly valve based on CFD │ Research on the failure mechanism of the three-cylinder plunger pump valve based on CFD │ Simulation study of the flow field characteristics of the jet tube servo valve under different working media based on CFD │ Squealing analysis of the servo valve armature assembly based on CFD │ CFD-based analysis of the thermal effect on the surface of the hydraulic slide valve core │ CFD-based flow field simulation analysis of the flip-float valve │ CFD-based flow field analysis of the anti-thorn nipple of the throttle valve │ CFD-based flow field analysis of the vehicle-mounted high-pressure pneumatic pressure reducing valve │ CFD-based study of the impact of the valve core neck diameter on the performance of the hydraulic poppet valve │ CFD-based comparison of the friction performance of the high-pressure multi-way valve micro-groove and pressure equalizing groove valve core │ Research on the pressure reducing valve body of the opening and closing parts based on CFX│ Solution based on Client/Server integrated valve design system│ Design and performance research of proportional valve measurement and control platform based on CompactRIO│ Fault analysis of relief valve of a certain type of equipment based on DAQ system and virtual instrument│ Design of valve-regulated lead-acid battery condition monitoring system based on DSP2812│ Research on control method of hydromechanical automatic transmission solenoid valve based on dSPACE│ Design and implementation of high-precision valve controller based on dsPIC30F6014A │ Design of sampling circuit of magnetic valve controllable reactor control system based on DSP │ Dynamic modeling and simulation of anti-reversal valve based on EASY5 │ Research on fault feature extraction of electromagnetic reversing valve based on EMD and AR models │ Performance test of electro-hydraulic servo valve based on FESTO TP511 experimental bench │ Simulation analysis of friction force of multi-phase flow hydraulic spool valve core based on Fluent│ Simulation analysis of flow field of pressure compensation valve in multi-way valve based on Fluent│ Numerical simulation research of different valve core and valve body combinations based on Fluent│ Research on pressure flow characteristics of large diameter slide valve based on Fluent│ Numerical simulation of flow field of jet tube servo valve preamplifier based on FLUENT│ Research on digital hydraulic relief valve based on Fluent│ Simulation calculation of flow coefficient of fixed valve of rod pump based on Fluent │ Research on clamping force of hydraulic spool valve core based on Fluent │ Simulation analysis of flow characteristics of spool valve port based on Fluent │ Structural design and flow field analysis of drip irrigation valve based on FLUENT │ Numerical simulation analysis of flow field of main valve of electromagnetic unloading valve based on Fluent │ Flow field analysis and structural optimization design of crane hydraulic poppet valve based on Fluent │ Numerical simulation and cavitation analysis of cone throttle valve based on FLUENT│ Calculation of gas lift valve flow rate based on secondary development of Fluent software. │ Research on flow-pressure characteristics of micro-flow valves based on Fluent metal rubber │ Research on balance valve characteristics based on F-type π bridge liquid resistance network │ Design of CPV valve island control experimental system based on iCAN protocol │ Design of industrial Ethernet communication between multiple PLCs on the pump truck valve block test bench based on IMAP │ Multi-way valve body fatigue test measurement and control system based on LabVIEW │ Design of fast exhaust valve reliability test bench based on LabVIEW │ Three test methods for phase-frequency characteristics of proportional valves based on LabVIEW and their comparison │ Fully automatic measurement and control system for hydraulic reversing valves based on LabVIEW │ Design of electro-hydraulic proportional relief valve characteristics CAT test bench based on LabVIEW │ Design of launch vehicle valve test data acquisition system based on LabVIEW │ Valve-controlled hydraulic coupling test system based on LabVIEW sleeve frequency conversion technology │ Modeling and simulation of M8 valve group based on Matlab and AMESim │ Research on electro-hydraulic proportional valve testing system based on MATLAB│ Simulation of an electro-hydraulic proportional speed control valve control synchronization system based on Matlab/Simulink│ Development of electro-hydraulic servo valve performance test and monitoring system based on MCGS configuration software│ Application of LabVIEW based on Modbus protocol in overflow valve testing│ Modeling and simulation of pump truck load-sensitive proportional multi-way valve based on Modelica│ Gas cylinder valve type test test system based on MoviconX configuration platform │ Discussion on the technical route of nuclear-level valve seismic analysis based on NASTRAN solver │ Optimization design of cartridge valve AMESim simulation model based on Nelder-Mead algorithm │ Design and application of solenoid valve parameter test system based on PCI-1711 │ Design of automatic valve test control system based on PLC and touch screen │ Design of solenoid valve durability test system based on PLC control │ 40T hybrid magnet low-temperature distribution valve box pressure control system based on PLC│ Hydraulic multi-way valve test bench design based on PLC│ Virtual assembly design of piston compressor reed valve based on Pro/Engineer ASSEMBLY│ Finite element analysis of compressor valve plate based on integration of Pro/E and ANSYS│ Finite element analysis of compressor valve plate based on Pro/E and ANSYS integrated environment│ Entity design of the integrated valve block of the main pressure regulating device in the electro-hydraulic proportional measurement and control system based on Pro/E│ Tabulation of valve component parameter families based on Pro/E│ Research on flow characteristics of switching solenoid valves based on PWM technology│ Fault diagnosis of reciprocating compressor valves based on RBF neural network│ Research on fault diagnosis of reciprocating pump valves based on RBF neural network│ Design scheme for the inverse search of the valve body cavity based on RE technology│ Simulation research on dynamic characteristics of pneumatic switch solenoid valve based on SimulationX│ Simulation of movement rules of oil pump valves based on Simulink │ Design and analysis of solenoid valves based on SolidWorks │ Research based on SolidWorks valve parametric CAD system │ Research on closed valve performance based on TRIZ and AD methods │ Design of three-way valves for water cooling systems based on TRIZ │ Process design and processing of plastic ball valves based on UG │ Research on CAD system for automatic flow balancing valve mold manufacturing process based on UG │ Software development of electro-hydraulic servo valve measurement and control system based on USB2828 data acquisition card │ Valve design verification program based on VB │ Based on V * Design of aircraft servo valve test and data acquisition system based on bus technology │ Gas valve leakage detection system based on ZigBee technology │ Noise reduction of pump valve vibration signals based on an improved lifting scheme │ Research on vibration waveforms of valve core rotary electro-hydraulic exciters based on different valve port shapes │ Development of automatic adjustment system for thermal expansion valve based on binary value search method │ Fault analysis and optimization of hydraulic control loop of roller changer device based on two-way cartridge valve │ Valve service research based on cloud manufacturing and 3D printing │ Application of boosting system in valve testing based on industry-university-research collaborative innovation │ Research on high-temperature valve opening control based on servo system │ Quantitative liquefied gas loading based on distributed loading batch controller, PLC and hydraulic diaphragm control valve │ Explosion valve design method based on functional logic combination │ Research on precision cylinder driven by piezoelectric proportional valve │ Design of high-frequency fatigue test system based on dual-displacement valve-controlled exciter │ Concept design of ball valve based on extension engineering method │ Industrial valve gas leakage monitoring method based on image processing │ Valve leakage online detection system based on acoustic emission technology │ Quantitative diagnosis technology of valve internal leakage rate based on acoustic emission detection │ Research on valve leakage detection and calibration method based on acoustic emission │ Research on high-pressure valve air tightness detection system based on external pressure differential method│ Quality control of valve stem production process based on multiple varieties and small batches │ Valve electric device controller based on multi-microprocessor │ Design and research of positive and negative pressure leakage detection system based on multi-way valve │ Diesel engine valve clearance identification based on wavelet analysis and neural network │ Analysis of internal leakage signal of natural gas pipeline valve based on wavelet threshold │ Calculation of oil tank breathing valve gas flux based on peak conservation method │ Design of valve sequential opening and closing device based on differential planetary gear mechanism │ Optimal design of electro-hydraulic servo valve based on amplitude margin │ Design of intelligent sampling valve for aviation oil tank based on fingerprint recognition │ Selection of gate valve electric transmission device based on vibration and noise │ Design and optimization of variable pressure side force hydraulic control system based on cartridge valve │ Gas valve fault diagnosis based on improved Mallat algorithm and envelope curve │ Research on vibration signal denoising method based on improved wavelet threshold │ Research on parameters of reciprocating compressor inlet valve based on numerical simulation │ Research on design parameters of piston compressor exhaust valve based on numerical simulation │ Automatic detection system based on intelligent valve positioner │ Proportional valve modeling and parameter identification based on least squares method │ Structural design of hydrogenation valve body based on finite element technology │ Development of air conditioning cut-off valve defect detection system based on machine vision │ Research on precision of brake valve spring tester based on standard deviation │ Research on optimal control technology of electronic expansion valve based on fuzzy PID controller │ Research on safety-level electric valve fault diagnosis based on fuzzy clustering │ Converter valve cooling control system based on fuzzy adaptive PID │ Liquid filling valve based on cylinder pressure curve_leakage_Cause analysis_Xu Gentao │ Analysis of the cause of "leakage" of the liquid-filled valve based on the cylinder pressure curve │ Research on the temperature characteristics of the slide valve based on fluid-solid thermal coupling │ Research on the throttling characteristics of the shock absorber recovery valve based on fluid-solid coupling analysis method │ Research on AMT clutch modification based on the automatic control mechanism of the flow valve │ Numerical simulation of the flow field of the wet clutch pressure regulating valve based on the immersed solid method │ Research on the repair of the proportional servo valve based on the hydraulic test bench │ Design and simulation of new piezoelectric ceramic direct drive valve based on hydraulic micro-displacement amplification structure │ Design of ZJFJ-2 test bench hydraulic system based on valve test for hydraulic support │ Streamline design of axial flow check valve spool and flow resistance coefficient analysis based on source-sink method and mathematical analysis method │ Experimental research on low-pressure casting liquid level pressurization control system based on electro-pneumatic proportional valve │ Design and simulation of electrorheological fluid reversing valve Research on electrohydrostatic loading system based on direct-acting digital valve │ Optimal design of continuous wave generator rotary valve based on correlation coefficient │ Research on main steam valve closing strength based on transient dynamics │ Diesel engine valve leakage diagnosis method based on instantaneous speed bispectral analysis │ Research on knowledge-based valve rapid design method │ Modeling and research of temperature control valve driven by paraffin material │ Servo valve driver based on magnetically controlled shape memory alloy │ Modeling and simulation of servo valve based on magnetically controlled shape memory alloy driver │ Needle valve body extrusion grinding process model based on neural network │ Application analysis of end face seal in solenoid valve development │ Rapid design of series valve products based on structural design unit │ Electronic expansion valve PID controller parameter setting based on adaptive DE algorithm │ AGC system based on adaptive wavelet threshold method │ Simulation study based on steam trap wall temperature and internal leakage diagnosis │ Solenoid valve comprehensive characteristic measurement and control system based on virtual instrument technology │ Low-temperature valve performance testing device based on computer data acquisition │ Pulse jet switching valve modeling and simulation based on giant magnetostrictive actuator │ CNC machining of needle valve joints based on turning and milling composite center │ Reliable control of electric valves by DCS based on communication │ Optimal design of valve-controlled motor speed control system based on genetic algorithm │ Feasibility study of main steam flow calculation based on valve position │ Stress concentration analysis based on valve design │ Analysis of dynamic characteristics of valve-controlled cylinder system based on impedance control │ Liquid valve fault diagnosis based on non-sampled lifting wavelet packet and singular value decomposition │ Multi-objective optimization design of static characteristics of load-sensing proportional valve based on non-dominated sorting genetic algorithm │ Research on characteristics of high-speed switching solenoid valve based on amorphous iron core │ Research on precise control of balanced air cylinder pressure based on high-speed switching valve │ Research on shift clutch oil pressure control based on high-speed switching valve │ Research on control algorithm of hydraulic AGC system based on high-speed switching valve │ Multi-hydraulic cylinder position coordination control system based on high-speed electromagnetic switching valve│ Fault diagnosis of relief valve based on high-order spectrum and support vector machine│ Simulation and research of boosted threaded cartridge relief valve│ Application of incremental digital valve in DCT main pressure regulation control system│ Design and analysis of incremental digital valve│ Application of acoustic emission technology in valve shell quality control│ Application of acoustic emission technology in valve detection│ Failure analysis of special valves in the pulverized coal conveying system in Shell coal gasification unit and its localization progress │ Application of composite solid lubricating film in electric valve transmission devices │ Development of composite ceramic control valves │ Externally threaded stainless steel stop valve (CB1010-90) │ Externally threaded steel right-angle stop valve (CB596-90) │ Externally threaded aluminum alloy right-angle stop valve (CB563-68) │ Structural design of external thread gate valve │ Hybrid neural network prediction model of hydraulic valve characteristics under the influence of multiple geometric elements │ Development of multi-function electric three-way valve with reducing diameter │ Multi-function stop valve │ Failure analysis and treatment of multi-function check valve │ Application of multi-function water pump control valve in PSP pipeline water supply project │ Application of multi-function water pump control valve in water supply pumping station │ Application of multi-function water pump control valve in water pump system │ Application of multi-function water pump control valve in sewage pumping stations │ Application of multi-function water pump control valve and its head loss problem │ Performance and application of multi-function water pump control valve 2 │ Test and application of water hammer characteristics of multi-function water pump control valve 3 │ Analysis of the causes of fracture of the pressure plate on the diaphragm of multi-function water pump control valve │ Design of multi-function ball valve and its transmission mechanism │ Multi-function electronic control valve test bench │ Development and application of multi-function water supply ball valve Fault analysis and treatment of multi-nozzle coal water slurry gasifier lock bucket system │ Application of multi-nozzle pressure relief valve │ Development of intelligent electric actuator transmission mechanism for multi-turn valves │ Analysis of causes and treatment measures of cavitation in multi-stage pump pressure relief valves │ Optimization design of multi-stage pressure regulating magnetorheological valve structure │ Design and analysis of multi-stage damping sampling valve structure │ Optimization calculation method of multi-way reversing valve flow path_Algebraic stress model │ Research on the application of multi-channel valve-controlled hydraulic system in construction machinery │ Design of multi-turn intelligent valve electric actuator control system │ Determination of the sealing surface width of multi-way rotary distribution valve │ Anti-friction structure of multi-way valve end seal Structural design of large-diameter liquid hydrogen vacuum stop valve │ Large-diameter marine bottle head valve design │ Large-diameter butterfly valve dynamic water shut-off test and analysis │ Pressure test plan for large-diameter butterfly valve special-shaped valve plate │ Research on large-diameter butterfly valve torsion rejection test device │ Large-diameter butterfly valve butterfly plate sealing surface measurement tool │ Large-diameter butterfly valve body design │ Effect of stiffness of large-diameter butterfly valve parts on performance │ Pre-vulcanized rubber lining technology for large-diameter butterfly valves │ Development of large-diameter ultra-high temperature butterfly valves │ Design of large-diameter high-temperature and high-pressure Y-shaped stop valves │ Comprehensive test bench for large-tonnage hydraulic forklift electro-hydraulic control valves │ Performance comparison of large storage tank breathing valves │ Analysis of technical characteristics of full-hydraulic steering flow amplification valves for large engineering machinery │ Design of large-scale quick-closing pneumatic butterfly valves │ Development trends of supporting valves for large-scale complete sets of equipment │ Optimization design of valve hall structural parameters of large converter stations │ Research on new energy-saving technologies for large check valves │ Medium-pressure butterfly valves for large thermal power units │ Treatment of deflection deformation of large butterfly valve guide columns │ Design and development of main steam valves for large supercritical thermal power stations │ Application of large water inlet butterfly valves in hydropower stations │ Analysis of failure causes of large cast stainless steel valve bodies │ Repair of large gate valves │ Simulation research on variable pitch load simulator of large wind turbine valve-controlled motor│ Numerical simulation of flow characteristics of large high-pressure steam valve│ Research and development of large-flow dual-active dual-electric feedback electro-hydraulic proportional cartridge throttle valve│ Simulation research on servo screw mechanism of large-flow digital valve│ Diagnosis method of leakage failure of large-flow mixed gas control valve│ Structural improvement of large blast furnace gas pressure regulating valve group│ Discussion on mercury removal factors in natural gas JT valve throttling refrigeration process│ Design and maintenance of control valves in natural gas purification plants│ Flow field analysis and coupling stress field calculation of natural gas distribution pressure reducing valves│ Research on partial stroke test of natural gas compressor equipment shut-off valves│ Design of natural gas drain valves│ Design of ball valve structure of natural gas hydrate sampler and application of air bags│ Correct use and maintenance of natural gas traps│ Setting of inbound and outbound valve groups of natural gas stations│ Numerical simulation study on flow field pressure characteristics in natural gas pipeline drain valves│ Structural characteristics of natural gas pipeline ball valves and issues that need attention during use│ Maintenance and troubleshooting technology of natural gas pipeline ball valves│ Research on acoustic emission signal characteristics of internal leakage in natural gas pipeline valves│ Research progress in acoustic emission detection methods and key technologies for internal leakage in natural gas pipeline valves│ Design and experimental research on internal leakage acoustic emission detection systems for natural gas pipeline valves│ Technical discussion and structural characteristics of natural gas pipeline valves│ Optimization and improvement of the gas vent valve for the synthesis process of natural gas plant│ Analysis of the causes of internal leakage of natural gas transmission and distribution system valves and countermeasures│ Maintenance and maintenance of natural gas long-distance pipeline valves│ Application of jacket valves in polyformaldehyde devices│ Development of sleeve-type high-temperature and high-pressure solenoid valves│ Casing constant pressure vent valves│ Rolling processing of austenitic stainless steel valve stems│ Development of austenitic stainless steel high-pressure hydrogenation valve castings│ How to correctly adjust the electric device of the valve │ How to determine the contact surface between the gate valve plate and the valve seat │ The quality of domestic valves used in the blast furnace system of Baosteel Phase II Project │ Analysis and comparison of electro-hydraulic servo valves used in Baosteel's rolling mill HAGC system │ Development of H-type offset opening IEI liquid pulse control servo valve for vibration excavation of hydraulic excavators │ Large sample diagram of outdoor water supply valve well │ Design of switch gun pressure valve for household high-pressure cleaners │ Energy-saving benefits of closed steam condensate recovery system │ Application of closed steam condensate recovery energy-saving technology │ Improvement of light-load quick-lowering valve for 5m^3 bucket capacity hydraulic loader bucket │ Discussion on the breaking force of low-temperature break-off valve │ Wafer-type and lug wafer-type check valves │ Selection of rubber seat hardness of wafer-type butterfly valves │ Wafer-type butterfly valve butterfly plate surface turning tool holder │ Split packing gland │ Improvement of the structure of the mechanical breathing valve of oil tanks │ Suggestions for temperature classification of valve operating temperatures below 425°C │ Development and application of guide-righting double-ball fixed valves │ Analysis and improvement of seal failure of airway check valves for missiles │ Optimization design of jet deflection plate servo valve amplification stage │ Research on return valve of jet self-priming sprinkler pumps │ Pre-stage modeling and simulation of jet tube servo valve │ Comparison of jet tube electro-hydraulic servo valve and nozzle baffle type electro-hydraulic servo valve │ Research on jet tube electro-hydraulic pressure servo valve technology │ Further development of small diameter centerline rubber-lined butterfly valve │ Research on sealing technology of small bellows valve │ Preliminary research on reliability growth test of small solenoid valve │ Improvement of discharge valve in small automatic feeding system │ Assembly process of small gate valve prefabricated valve seats │ Analysis of factors affecting the torque of small high-pressure ball valves and their control measures │ Optimal design of main steam valves of small high-efficiency steam turbines │ Modification and selection of pressureless outflow valves for small hydropower stations │ Development of electric devices for small-torque multi-turn nuclear-level valves │ Damage forms and protection of cut-off valves for urea │ Technical transformation of urea system control valves │ Application of shielded permanent magnet stepper fully enclosed motors in electric gate valves │ Selection of actuators for block valves in the Sichuan-East Gas Pipeline Project │ Analysis of corrosion failure of FF-NL gas production wellhead valves in Sichuan-Chongqing gas fields │ Selection of check valves in industrial and power pipelines │ Assembly welding of industrial steam turbine cylinders and valve bodies │ Research on supersonic flame spraying of industrial steam turbine valve stems │ Current standards for industrial process control valves │ Research on intelligent pneumatic valve positioning controllers for industrial boilers │ Some problems in the application of industrial valves in petrochemical plants │ Optimal design of industrial valve electric devices │ Analysis and optimization of steam turbine DEH valve control performance under working conditions_Zhao Weizheng.caj │ The application of air valves to prevent water hammer when stopping pumps in engineering │ Research on fuzzy PID controller of electro-hydraulic proportional valve control system of engineering machinery │ Research on the characteristics and application of electro-hydraulic proportional valves in engineering machinery │ Standards for low-emission valves in engineering design │ Key points for selecting process valves in engineering design │ Selection of solenoid valves in engineering design │ How to propose automatic control conditions for control valves in engineering majors │ Special installation requirements for process valves on process pipelines │ Clever modification of valves - ordinary valves become automatic valves │ Design of differential pressure stop check valves │ Application of differential flow adjustable shuttle valves in ball valve control devices │ The gap is obvious - the valve industry urgently needs to improve innovation capabilities │ Speed control of TRT units with and without starting valves │ Nuclear-level swing check valves with position indicators │ Externally threaded bronze right-angle stop valve with bottom flange (CB598-90) │ Specification for high-pressure air right-angle stop valve with bottom flange (CB592-96) │ Application of balancing valve with bypass oil circuit in construction machinery │ Simulation analysis of pilot-operated electric/pneumatic proportional valve with high-speed switching valve │ Specification for high-pressure air right-angle stop valve with check valve (CB584-1995) │ Research on the dynamic characteristics of long pipeline high-frequency response valve control system with accumulator │ Improvement and design of emergency shut-off valve with overflow valve │ Predictive iteration with forgetting factor * Research on the application of control in valve-controlled asymmetric cylinder systems │ Analysis and application of acoustic characteristics of valve body opening changes of mufflers with valves │ Analysis and countermeasures for scratches of flat gate valves │ Processing of guide rail grooves of flat valve bodies │ Design of balanced sleeve pressure reducing valves │ Balanced ball valves │ Development and design of balanced pipeline plug valves │ Use of balance valves in shearer hydraulic systems │ Factors affecting the jitter phenomenon of the crane hoisting system due to balance valves │ Application of CAD technology to develop new valve products │ Flow characteristics analysis and optimal design of high-frequency reciprocating pumps using one-way valve flow distribution │ Numerical simulation of gas-solid flow characteristics in a U-shaped valve using a two-fluid model │ Fault diagnosis method of electromagnetic reversing valve using time series bispectrum analysis │ Application of neural network technology to realize data processing in valve design │ Application of thin coating activation technology (TLA) to evaluate the erosion of high-temperature and high-pressure condensate gas well throttle valves │ Test analysis of bottom valve filter resistance coefficient │ Analysis of damage causes of waste heat boiler bypass butterfly valves │ Analysis and treatment of damage causes of waste heat boiler bypass butterfly valves │ Theoretical analysis and experimental research on delay valves │ Coking tower bottom valves and tower top valves of delayed coking units │ Analysis and treatment of leakage problems of high-temperature plug valves used in delayed coking units │ Failure analysis of high-temperature anti-coking ball valves in delayed coking units│ Characteristics and applications of high-temperature anti-coking ball valves in delayed coking units│ Measures to extend the service life of valve-regulated lead-acid batteries│ Research on the positioning system of switching solenoid valves to control hydraulic actuators with inertia loads│ Simulation analysis of magnetic field and elongation of super magnetostrictive actuators for switching valves│ Research on control methods of opening of throttle valves at abnormally high pressure gas wells│ Butterfly valve with arcuate butterfly plate │ Analysis of rubber sealing conditions of elastic seal gate valve │ Design of elastic metal hard-sealed eccentric semi-ball valve │ Analysis of design characteristics of elastic valve seat gate │ Elastic disc type stop valve │ Design of spring-type quick closing butterfly valve │ Design and research of shape memory alloy action element drain valve │ Analysis of reasons affecting the opening of the rear column control valve and improvement measures │ Causes and countermeasures affecting the flushing effect of delayed self-closing toilet flushing valves │ Research on transient characteristics of air valves in reciprocating compressor air volume adjustment systems │ Reciprocating compressor air valve technology │ Reciprocating compressor air valve failure simulation experiments and diagnostic research │ Dynamic research on the air inlet valve during the stepless adjustment of reciprocating compressor air volume │ Analysis of reciprocating compressor air valve failure cases │ Research on optimal design methods of reciprocating compressor air inlet valves │ Theoretical study on the motion law of the inlet valve of a reciprocating compressor │ Analysis of the outlet one-way poppet valve angle of a reciprocating oil-gas mixed pump Harmonic wavelet packet analysis and LS-SVM method research on reciprocating pump valves │ Selection of circulating cooling water valves and internal parts materials │ Improvement of circulating water pump outlet check butterfly valve control circuit │ Renovation of circulating pump outlet butterfly valve control system │ Cold test analysis of the cause of J valve vibration in circulating fluidized bed boiler │ Analysis of micro high-reliability ultra-high pressure solenoid valve technology │ Impact of throttle valve action on annular pressure in micro-flow pressure controlled drilling │ Design of quick-opening butterfly valve │ Butterfly valve for quick shut-off │ Design of handwheel mechanism of pneumatic piston type linear stroke device for quick shut-off valve │ Quick exhaust valve │ Analysis of motion characteristics of quick relief valve │ How to avoid failure of steam trap │ Research on water temperature control system of thermostatic mixing valve │ Research on design of bimetallic sheet assembly of cantilever type bimetal trap │ Brief analysis of steam balance and condensate recovery in our factory │ Current status and prospects of hydraulic valves for engineering machinery in China│ Current status and analysis of high-end valves in thermal power plants in China│ Current status and development trends of my country's valve industry│ A new starting point for the development of valves in my country's food industry│ Simulation analysis and research on flow optimization of stop check valves│ Improvement of stop valve repair technology│ Analysis of stop valve failure cases│ Analysis of reasons for breakage of stop valves│ Stress calculation and analysis of welded seat of stop valves│ Testing and research of stop valve characteristics│ Design of globe valve spherical disc │ Three-dimensional parameter design of globe valve │ Analysis of the cause of globe valve packing leakage and fire │ Full-blocking sealing structure design of globe valve │ Improvement of globe valve bonnet turning process │ Computer-aided design of flat valve middle cavity and middle flange │ Connection of hand brake valve and trailer hand brake valve │ Analysis and improvement of hand brake valve failure mode │ Improvement of mechanical transmission part of manual open sector gate valve │ Development of an integrated leakage monitoring terminal for manual valve chambers│ Improvement of the structure of manual rack-type gate valves│ Combining manual and automatic programming to improve the processing efficiency of hydraulic valve bodies│ Development and application of manual-hydraulic integrated flat valves│ Simulation research on suppressing starting overshoot of helium pressure reducing valves│ Experimental research on hydrogen sulfide-resistant high-strength gel valves│ Design of air extraction check valves│ Quality control in the processing of giant ball valves for pumped storage units│ Sealing modification of fixed valve block of oil pump │ Optimization of sealing cone angle of valve ball seat of fixed valve group of oil pump │ Application of forced closing fixed valve of oil pump in highly deviated well section │ Analysis of causes of fracture of oil pump plunger opening valve cover and improvement measures │ Field test application of oil pump drain valve │ Optimization study of oil pump valve ball density │ Stress calculation and failure analysis of oil pump valve cover │ Valve block assembly for oil passage hole leakage detection in tractor transmission body│ Valve modification of 120,000 m3/d water production process in Gongbei Water Plant│ Pressure-maintaining pressure relief valve│ SLV series check valve for excavator cooling system│ Research on multi-way valves in excavator working equipment│ Research on control characteristics of excavator shift valve spool│ Key technologies in the development of high-pressure multi-way valves for excavators│ Reasonable use of reversing valves in hydraulic systems│ Experimental study on the performance of high-flow low-pressure proportional valves for gear shifting control│ Insulation analysis of the outlet device of the valve-side bushing of the converter transformer│ Failure analysis of the local excessive temperature of the valve-side bushing of the converter transformer│ Calculation and analysis of the DC lead on the valve side of the converter transformer│ Calculation and analysis of the electric field at the end of the polarity reversal test of the valve-side winding of the converter transformer│ Calculation and analysis of the polarity reversal transient electric field at the end of the valve side winding of the converter transformer│ Guarantee of the structural dimensions of the blowdown valve cover casting│ Slag removal_Development of a dual-purpose throttle gate valve │ Research on the impact of smoke exhaust valve settings on the centralized smoke exhaust effect of tunnels │ Research on the double-spool electronic hydraulic control system of the excavator │ Analysis of the dynamic performance of threaded cartridge balance valves for tunnel boring machines │ Discussion on the techniques for selecting commonly used valves in chemical engineering design │ Development of a throttle valve for controlled pressure drilling │ Clamp design and CNC program design of the control main valve body │ Selection of control system DO cards and solenoid valves │ Application of control valves in PTA units │ Selection of control valves in chlor-alkali chemical production │ Application of control valves under harsh working conditions │ Prevention and control of vibration and noise of control valves │ Test methods for control valve emission capabilities │ Casting process of control valve brackets │ Modular design of control valves │ Definition evolution and conversion derivation of control valve flow coefficients │ Detailed analysis of the control valve - valve body │ Control valve selection calculation method │ Calculation of control valve flash and cavitation phenomena and blocked flow │ Research on the relationship between throttle valve opening and throttle pressure in pressure-managed drilling │ Design of the contour curve of the throttle valve core in pressure-managed drilling │ Analysis and solutions to the causes of brake pad breakage in bulldozer servo valves │ Principles and methods to improve and ensure the integrity of steam traps │ Measures to improve the performance of electro-hydraulic reversing valves │ Valve management to improve the efficiency of air cooling units │ Measures to improve the life of ultra-high pressure valves │ Simulation research to improve the performance of high-speed switching valves │ Development and application of plug-in direct-reading anti-freeze blocking and constant pressure relief valves │ Application of the combination of flapper valves and dome valves in pneumatic conveying systems │ Simulation test of gas medium flow characteristics during the opening and closing process of flapper valves │ Structural optimization of the flow-displacement characteristics of the cartridge water inlet valve core │ Integrated design of the pilot control stage of the cartridge valve │ Application and maintenance of the cartridge valve in the hydraulic balance system of the medium plate rolling mill │ Application of the cartridge valve in the wide and thick plate shear │ Performance analysis of the cartridge valve in the hydraulic three-roller plate bending machine │ Application of the cartridge valve in the hydraulic system of the static pressure molding line │ Application of cartridge valve type emergency pressure distribution valve in Tianshengqiao Hydropower Plant│ Installation and disassembly of cartridge valves│ Simulation study on the erosion effect of sand-carrying liquid flow on the needle valve of desander Design and application of multi-way rotary valves that support pilot oil circuit distribution│ Change DRP control logic to solve ABS valve body noise│ Modify condensate recovery system to reduce energy consumption│ Research on performance advantages and structure of digital pressure valves│ Electrical system design of digital multi-functional plug valve durability test device│ Application of digital explosion-proof proportional multi-way valves in support trucks│ Design and application of digital flow valves│ Research on the Characteristics of Digital Hydraulic Cylinder Valve Core│ Application and Maintenance of Digital Valve Controller│ Application of Mathematical Modeling Thoughts in Valve Design and Calculation│ Introduction to CNC Fully Automatic Needle Valve Body Large End Face Super Precision Grinder│ Special Boring Machine for CNC Horizontal Valve Body Bore Processing│ Application of CNC Lathes in the Valve Industry│ Introduction to CNC Needle Valve Body Ball Head Fully Automatic Forming Grinder│ File Number.txt│ Dynamic and static simulation analysis of new pilot-operated non-static hydraulic pressure relief valve│ Simulation study of new piezoelectric high-speed switching valve│ Analysis of new double-layer caged throttle valve│ New double-gate gate valve│ Development and application of new controllable multi-functional bottom valve oil pump│ Performance of new fixed valve tray│ Dynamic analysis and simulation optimization of the internal flow field of new rotating high-speed switching valve│ Numerical simulation and experimental research on the performance of new flexible valve discs│ Research on low-temperature flow characteristics of new proportional speed control valves│ Structure and principle of new turbine water inlet ball valves│ Development and application of new sand settling valves│ Development and testing of new oil layer protection valves│ Calculation and analysis of the lag angle of the outlet ball valve of new oil and gas mixed pumps│ Structural design of new hydraulic reversing valves│ New hydraulic torque limiting valves│ Design and simulation of new electronically controlled proportional flow control valve │ Pressure calculation and experimental research of new electro-hydraulic shift control valve │ Simulation and experimental research of new solenoid valve type shock absorber │ New pneumatic valve actuator device │ Design of new magnetorheological hydraulic servo valve test system controller New ultra-high pressure unloading valve │ Analysis of the motion pattern of the outlet ball valve of the new rotor-type oil and gas mixed pump │ Numerical simulation analysis of the flow field of the new articulated one-way valve │ Numerical simulation of the new tin bronze alloy valve body │ New valve—PIC valve │ Application of new valves in the reservoir water discharge system │ Numerical study of the gas jet at the valve port of the new high-voltage electric-pneumatic servo valve │ Design and application of the new powder material discharge valve │ Technical transformation of the double-valve filter of Xinhe Water Plant│ Application of new valve maintenance technology in the Sichuan-East Gas Pipeline│ Three-dimensional numerical simulation study of the flow field of the kelly plug valve│ Three-dimensional finite element contact analysis of the kelly plug valve│ Research on the pressure test device of the kelly plug valve│ Flow field analysis and structural optimization of the swing check valve│ Swing check valve test bench│ Analysis and treatment of spalling corrosion of plug valve lining│ Optimization and application of plug valve opening resistance torque│ Plug valve manual planetary gear transmission device│ Function and application of plug valve│ Structural improvement and strength check of plug valve│ Several issues in plug valve design calculation│ Design calculation of plug valve channel│ Simulation analysis of abnormal noise of excess flow valve of rotary drilling rig│ Application of rotary valves in refining and chemical plants │ Research on hydraulic characteristics of rotary valve mud pulser rotors │ Characteristics and application trends of rotary valves │ Development of wear-resistant wing valves for cyclone separators │ Characteristics analysis of one-pump multi-pressure circuits without pressure reducing valves │ Design and application of unpowered air-locking ash discharge valves │ Packing-free permanent magnet transmission valves │ Application analysis of non-destructive testing technology in the design of liquefied petroleum gas storage tanks│ Heat and mass transfer characteristics of non-overflow solid valve plate hot water towers│ Performance measurement of non-wear check valves│ Working characteristics and structural parameters of valveless piezoelectric microfluidic pumps│ Structural design and finite element analysis of valveless micro-pumps│ Design and research of nitrogen chambers of valveless gas-liquid combined impactors│ One of the new ideas for water-saving technology of valveless filters│ Research on the characteristics and detection system of Hitachi FMV servo valve │ Analysis of the combined effectiveness of ordinary gas valves and PEEK gas valves │ Application of smart valves in energy saving of circulating cooling water in petrochemical enterprises │ Research on intelligent membrane pressure reducing valves │ Characteristics correction method of intelligent control valves │ Research on the application of intelligent proportional valve control electro-hydraulic actuators │ Research on intelligent hydraulically controlled slow-closing butterfly check valves │ Development of intelligent valve electric actuator controllers │ Design of hydraulic control system for intelligent completion downhole flow valve │ Comparison of intelligent valve positioners and non-intelligent valve positioners │ Discussion on the application of intelligent valve positioners in melamine plants │ Research on control methods of intelligent valve positioners │ Improvement of intelligent valve positioner control algorithms │ Conventional modes and basic components of intelligent valve positioners │ Application and maintenance of intelligent valve positioners │ Pneumatic components of intelligent valve positioners │ Research and development of intelligent valve positioner │ Design of intelligent valve positioner │ Design of asymmetric one-dimensional fuzzy controller of intelligent valve positioner │ Research on the application status of concealed rod manual flat valve │ Design and application of machine card composite tool in complex valve body processing │ Simulation study of mechanical feedback proportional valve position control system │ Use and maintenance of mechanical breathing valve │ Effect of oil pump pressure limiting valve core on flow stability │ Application of electromechanical hydraulic technology in automatic pressure-maintaining hammer-type hydraulically controlled butterfly valves│ Analysis and research on the air leakage phenomenon of large-flow pressure reducing valves in locomotive braking systems│ Design of lever differential pressure piston pilot-operated bell-shaped float traps│ Design of lever-type butterfly valve opening and closing structures│ Determination of two main parameters in the structural design of lever-type butterfly valves│ Calculation of the maximum back pressure rate of lever-piston bell-shaped float-type traps│ Development and application of plate-type concentrated material distribution valve │ Plate-shaped valve core rotary four-way reversing valve │ Improvement of the valve management link of a 600MW steam turbine DEH system_Zhu Pengbo.caj │ Establishment and simulation of mathematical model of a certain two-way proportional flow valve │ Solutions to common faults of a certain type of pressurized water reactor RHRS electric gate valve │ Development of a certain type of rotary direct drive servo valve │ Design of a certain type of hydraulic solenoid valve test system │ Analysis and solutions to the causes of abnormal signal feedback of the solenoid valve used in a certain type of ship's fire protection system │ Analysis and troubleshooting of the relief valve failure of a certain type of equipment │ Design of a certain type of aircraft brake servo valve performance test device │ Design of a certain type of aircraft brake pressure reducing valve test bench │ Certain type of aircraft brake pressure servo valve oil contamination and control │ Design of a certain type of aircraft electro-hydraulic servo valve detection system │ Estimation of the wear life of a certain large diameter slide valve │ Design and construction of grouting reinforcement treatment for sleeve valve tubes on the floor of an industrial factory │ Analysis of the reasons for the fracture of a hydrogen pipeline valve fastening stud │ Research on measures to correct internal leakage in the drain system valve of Unit 10 of a certain thermal power plant│ Reliability optimization of the heating fluid control valve of a certain thermal power plant│ Renovation of the return valve of the circulating fluidized bed hot water boiler of a certain thermal power plant│ Analysis of the causes of valve stem breakage in a certain power plant│ Design and adjustment method of the adjustment tooling for the load-sensing proportional valve of a light truck│ Research on factors affecting the electromagnetic force of a high-speed electromagnetic switch valve│ Collision analysis of diesel injection valves│ Research on the Wear Resistance of the Cone Coating of Diesel Engine Exhaust Valve│ Starting Point of Solenoid Valve Closing and Feedback Control Strategy in Diesel Engine Fuel System│ Test and Calculation Analysis of High-pressure Leakage of Diesel Engine Needle Valve Coupling_Liu Sheng│ Application of standard operations in the assembly of two-position three-way ball valves│ Analysis of fatigue performance of nuclear first-level electric stop valves│ Development of electric pressure relief valves for nuclear first-level pressure regulators│ Nuclear first-level high C_Development of v-value swing check valve │ Overspeed analysis of nuclear power steam turbine medium pressure butterfly valve jamming │ Design of nuclear power hydraulically controlled check butterfly valve │ Analysis and treatment of corrosion causes of butterfly valve discs in seawater system of nuclear power plants │ Design of nuclear-grade check valves for nuclear power plants │ Development and access conditions of nuclear-grade valves for nuclear power plants │ Design of nuclear-grade air valves for nuclear power plants │ Research on optimization of valve configuration for waste resin replacement system of nuclear power plant desalter_Wang Liang_Li Yi_Yang Zhao_Xie Yang_Chen Zhihui │ Nuclear power valve market prospects │ The influence of nuclear power valve silencer seats on the flow field during stable operation │ Test identification of nuclear power valves │ Analysis and research on the stress and deformation of the experimental support seat for nuclear power high-pressure main steam valve control seat │ Design of nuclear-grade M-type pneumatic straight-through diaphragm valve │ Design and calculation of nuclear-grade pressure reducing valve │ Seismic analysis of nuclear-grade manual eccentric ball valves │ Design calculation of nuclear grade butterfly valve│ Performance indicators and industry standards of metal bellows for nuclear grade valves│ Quality inspection of nuclear grade valve manufacturing process│ Analysis of fatigue resistance of nuclear grade valves│ Simulation analysis of seismic test of nuclear grade valve pneumatic actuator│ Seismic test research of nuclear grade valve electric actuator│ Seismic analysis and test of nuclear grade valve electric actuator│ Research on protection test of nuclear grade valve electric actuator│ Nuclear grade valve electric device│ Seismic test research on nuclear grade valve driving device│ Determining diesel engine failure based on the emissions of the power indicator valve│ Comparative analysis and numerical simulation of the flow characteristics of the shuttle check valve and the swing check valve│ Comparative analysis of the fluid-solid coupling characteristics of the shuttle check valve and the swing check valve│ Research on the flow field characteristics when the shuttle check valve is closed│ Research and analysis of the working performance of the shuttle check valve│ Numerical analysis of water hammer protection characteristics of shuttle check valve │ Magnetic field analysis of shuttle check valve core displacement magnetic sensor │ Discussion on the application of trapezoidal guide float valve tray in high-sulfur natural gas processing equipment in northwest Sichuan and low-load operation │ Calculation of the tensile cross-sectional area of trapezoidal thread valve stem │ Theoretical calculation and analysis of the opening and closing force and torque of wedge elastic gate valve │ Design of wedge wear-resistant plug valve │ Calculation of the body cavity size of the oblate valve body of the wedge gate valve │ Plastic fonts for valve casting in mold processing │ Technology of modular valve column multi-dimensional chromatography system for analyzing refinery gas │ Mode selection valve adjustable mechanism motion simulation analysis │ Application of modal synthesis method in valve modal analysis │ Application of fuzzy mathematics in valve fault diagnosis │ Application of recovery of steam condensation water in rubber plants │ Application of check deluge valve in fire engineering │ Application analysis of check valve in gas engineering design │ Influence of check valve on water hammer in water supply system │ Improvement and processing of check valve rocker shaft hole structure │ Structural reform of check valve │ High-level energy storage test method of check valve │ Discussion of several technologies for the selection of check valve types │ Experimental research on dynamic characteristics of positive opening 2D digital servo valve │ Correct understanding of control valve seat leakage │ Application of proportional servo valve in aluminum strip and foil rolling mill │ Robust output feedback control of proportional pressure reducing valve │ Computer-aided analysis of dynamic characteristics of proportional pressure valve_Wu Liangbao│ Discussion on test indicators and standards for proportional pressure/flow valves│ Design of proportional cartridge pressure reducing valve and its application in injection molding systems│ Design of proportional directional valve performance test system│ Acquisition and fitting of flow characteristic data of proportional directional valves│ Characteristic testing and experimental modeling of proportional flow valves│ Design of proportional relief valve characteristic testing and analysis system│ Valve coil current detection technology in proportional solenoid valve PWM driver│ Research on flow hysteresis modeling method of proportional solenoid valve │ Operation of proportional valve in the material rake hydraulic system of mixing reclaimer │ Design and analysis of proportional valve controlled electro-hydraulic correction system │ Research on response characteristics of proportional valve controlled steering system │ Research progress of proportional valve electro-mechanical converter │ Application of proportional valve │ Design and experimental study of proportional valve linear two-way electromagnet │ Gas well wellhead remote control solenoid valve │ Development and application of large size selection valves for gas fire extinguishing │ Free float check valve for gas │ Design and analysis of the main valve of the continuous circulation sub for gas drilling │ Design and analysis of the bypass valve of the continuous circulation sub for gas drilling │ AMESim simulation and test of the air brake load sensing proportional valve │ Research and evaluation of the performance detection system of the air brake hand control valve │ Application of the pneumatic three-way ball valve in the transformation of the continuous crystallization process │ Self-excited vibration of pneumatic pilot solenoid valve │ Measures for the modification of pneumatic ash discharge ball valve │ Design and application of pneumatic double-action position-keeping switch valve │ Analysis of the application of pneumatic cut-off valve in Su 14 block │ Development of pneumatic slag discharge butterfly valve │ Analysis of air consumption of pneumatic control valve and design of gas storage tank │ Research and application of pneumatic test rotary valve performance │ Constant stress accelerated life test of pneumatic electromagnetic reversing valve │ Research on comprehensive performance testing system of pneumatic solenoid valve │ Design of pneumatic DC stop plunger valve DN32 │ Pneumatic slow opening and quick closing ball valve │ Pneumatic butterfly valve │ Application and analysis of pneumatic butterfly valve in extra heavy oil sewage treatment │ Design of pneumatic valve body car fixture │ Automatic switching mechanism between manual and pneumatic valves │ Development and application of energy-saving technology for pneumatic valve positioners │ Analysis of common faults of pneumatic valves │ Special automatic drain and drain valve for the air box of air cushion belt conveyor │ Calculation of the force of air flow on the valve disc │ Effect of gas-liquid ratio on the lagging angle of the ball valve of the rotor-type oil and gas mixed pump │ Air source quality - guarantee of the life of pneumatic valves │ Gas cylinder valve type test test system Research on the detailed rules for type testing of gas cylinder valves │ Discussion of gas cylinder valve standards │ Leakage of gas cylinder valves and solutions │ Gas cylinder valves * * Discussion on standards │ Comparative study of new and old standards for gas cylinder valve type testing │ Analysis and research on gas cylinder valve air tightness test methods │ Design of valve cover stamping progressive die │ Experimental research on gas valve fault diagnosis │ Design of fluoroplastic lined butterfly valve │ Fluorine rubber hot air butterfly valve │ Improvement of long barrel discharge valve for alumina seed trough │ Application of zinc oxide non-linear resistance valves in oil-immersed transformers│ Stability analysis of oxygen breathing apparatus pressure reducing valves│ Structural improvement of pressure reducing valves for oxygen busbars│ Analysis of the reasons for fracture of the connection studs of the air inlet valve on the top of the oxygen spherical tank│ Special valves for oxygen pipelines│ Discussion on the combustion and explosion mechanism of oxygen valves and pipelines│ Discussion on the selection of oxygen valve materials and piping design│ Application and improvement of ammonia synthesis liquid level high-pressure control valve│ Research on the dynamic characteristics of the opening and closing process of nitrogen-type water hammer pressure relief valves│ Customized testing and troubleshooting of nitrogen-type water hammer pressure relief valves│ Application and maintenance of nitrogen-type water hammer pressure relief valves│ Failure analysis of stainless steel instrument valves in vinyl chloride units│ Structural design and material selection of chlorine gas valves│ Analysis of oil distribution valves of underwater hydraulic impactors│ Research on the design of underwater hydraulic control valves│ Analysis of natural gas hydrate formation in subsea tree choke valves│ Research on the application of underwater gate valves in underwater production systems│ Research on reliability design of underwater valves│ Optimal design of coaxial parallel double springs for underwater valve actuators│ Analysis of underwater valve types and design solutions│ Application of water hammer relief valves on long oil pipelines│ Hydraulic control valves│ Research on the opening and closing mode of the hydraulic floating ship lift water filling and draining valve│ CFD analysis of the flow channel structure of the hydraulic decoking three-way valve│ Design research on the microcomputer control of the hydraulic digital throttle valve│ Application and structural optimization of the hydraulic test plug valve│ Application of the hydraulic test plug valve in the once-through boiler reheater system│ Application analysis and structural improvement of the hydraulic test valve│ Technical development and application of the hydraulic test valve│ Principle and design calculation of water seal check valve │ Development and application of open hole staged fracturing casing valve for horizontal wells │ Research on the selection of water pump outlet valve type using water delivery system of pneumatic pressure regulating chamber │ Numerical research on electromagnetic field of water hydraulic digital valve │ Design research on key technologies of water hydraulic throttle valve │ Research and design of hard-sealed ball valve for coal water slurry conditions │ Special valves in coal water slurry gasification process │ Operation analysis of localized valves in coal-water slurry gasification slag water system Sun Dehao│ Selection of oxygen cut-off ball valves in coal-water slurry gasification devices│ Design of automatic maintenance manipulator for ball valves in hydropower stations│ Development of large-diameter butterfly valves for hydropower stations│ Structural analysis of butterfly valves in hydropower stations│ Solutions to several problems with water pipeline valves│ Analysis and treatment of twitching faults of the main pressure distribution valve of the hydroelectric generator governor│ Turbine cylindrical valve research and development technology │ Application of vapor-liquid two-phase traps in boiler couplings │ Truck crane SBBLDL25 load sensing electro-hydraulic proportional control multi-way valve │ Comparison of balancing valves in truck crane hoisting mechanisms │ Deep hole processing of steam turbine main steam valve discs │ Research on processing methods of steam turbine reheat main steam valve discs │ Steam turbine bypass system and valve selection │ Valve control of steam turbine │ Analysis and treatment of steam leakage from the medium pressure main steam valve stem of steam turbine unit │ Analysis of unloading of steam turbine inlet valve │ Calculation of steam leakage from steam turbine valve stem │ Analysis and optimization of steam turbine valve flow characteristic curve │ Simulation of steam turbine valve management and optimization of flow opening function │ Analysis of causes of valve stem breakage of steam turbine high-pressure main steam valve │ Research on rough machining process plan for steam turbine high-pressure solid valve body│ Thermal economic analysis of internal leakage of steam turbine high-pressure bypass valve│ On-site inspection and static test before installation of settling-regenerator center wing valve│ Development of multi-functional check valve for oil wells│ Research and design of oil pressure control valve (OCV) performance experimental bench│ Research on characteristics of external mechanical induction damping valve for oil and gas suspension│ Research on the flow capacity of oil, gas and water three-phase throttle valves │ Simulation and analysis of characteristics of small flow proportional throttle valves in oil and gas lubrication systems │ Experimental research on the influence of oil temperature on the pressure of quantitative pump relief valve systems │ CFD calculation and analysis of the flow field of poppet valves of reciprocating polymer injection pumps used in oil fields │ Technical application of transforming manual gate valves into quick shut-off valves in oil tank areas │ Analysis of the principle and application of oil tank drainage valve groups │ Design and application of oil tanker PV valve pipeline anti-blocking device │ Reliability optimization of hydraulically controlled butterfly valves at the outlet of circulating water pumps in open-air coastal power plants │ Analysis of pressure relief valve action characteristics │ Application of pressure relief valves in product oil pipelines │ Design of pressure relief valve delay and alarm │ Selection analysis and application of pressure relief valves │ Metal ball valves with flanges, threads and welding connections │ Metal plug valves with flange and welding connections │ Flange cast steel seawater stop valve (CB/T3196-95) │ Optimized design of surge valve sealing performance │ Numerical simulation of two-phase flow field on bellows-guided float valve tray │ Application of bellows-sealed stop valve in food factory │ Bellows-sealed ball valve │ Working principle of bellows differential stop valve and its application in heat exchange units │ Calculation of static characteristics of bellows-type steam pressure reducing valve │ Research on bellows ball valves │ Sealing structure of bellows valves and its influencing factors │ Inspection and testing of bellows valves 3 │ Design calculation and finite element analysis of air injection valves │ Transformation of water injection pump valve seats and valves │ Development and application of low-shear flow control valves in the polymer injection process │ Pump steam traps │ Troubleshooting of water supply gate valves in pumping station technology and system transformation │ Simulation and analysis of dynamic characteristics of the pump station relief valve model │ Research on key technologies of the APS system of pump valve manufacturing enterprises │ Mathematical model and verification of piston-type self-operated three-way valves │ Fuzzy reliability design of piston refrigeration compressor gas valve springs │ Overview of research on reed valves of piston refrigeration compressors │ Application of piston pulse valves in bag dust collector injection systems │ Piston-type high-pressure mud valves │ Technical transformation of material level control valve in fluidized bed large particle urea plant│ Development and application of flow direction indicating one-flow valve│ Triple eccentric butterfly valve for fluid catalytic cracking process│ Design and application of streamlined non-magnetic anti-leakage pump and valve assembly│ Discussion on the description method of flow servo valve in hydraulic system simulation│ Research on dynamic and static characteristics of flow feedback type electro-hydraulic proportional directional valve│ Application of flow control valve in pressure control system│ Analysis of the application of flow control valves in intelligent completions │ Control and application of flow control valves to the Nanshan Terminal LPG process │ Application of flow amplification valves in fully hydraulic steering systems │ Experimental research on characteristics of flow amplification valves │ Brief analysis of maintenance and repair of pilot-operated water hammer pressure relief valves │ Brief analysis of detection methods and troubleshooting of quantitative water mixing valves │ Brief analysis of the application of rotary valves in refining and chemical plants │ A brief analysis of the replacement construction technology of underground well valves in refining and chemical enterprises │ A brief analysis of the application principles and improvement plans of two-stage ball valves in automatic loading systems │ A brief discussion of valve quality management in large-scale coal chemical engineering projects │ A brief discussion of the selection of oil pipeline valves │ A brief discussion of the working principles and selection of several steam water delivery valves │ A brief discussion of abnormal fuel injection of transformer pressure relief valves │ A brief discussion on the maintenance and debugging method of the syngas compressor turbine 4117-KIT speed control valve │ A brief discussion on foreign gate valve body lathes │ A brief discussion on the reduction of maintenance costs of PCV valves in natural gas stations │ A brief discussion on the modification of the valve positioner of the urea unit │ A brief discussion on the selection and use of traps in engineering design │ A brief discussion on the impact of liquid-carrying media on compressor valves │ A brief discussion on the selection and use of control valves │ A brief discussion on the special requirements of the new coal-water slurry gasifier control valve │ A brief discussion on the use of liquid-controlled one-way valves │ A brief discussion on the procurement requirements for cryogenic valves │ A brief discussion on the use and selection of steam traps │ A brief discussion on the application of butterfly valves in chlor-alkali enterprises │ A brief discussion on the use of gravity valveless filters in water treatment │ A brief discussion on reciprocating compressor gas valves whose valve material is PEEK │ A brief discussion on the two types of adjustment and fault analysis of the valve positioner│ A brief discussion on the application of the valve actuator fieldbus control system in the crude oil reservoir area│ A brief discussion on the causes of valve leakage and the optimization of design selection│ A brief discussion on the relationship between valve selection and maintenance costs_Feng Weizhong│ A brief discussion on the issues that should be paid attention to when selecting valves│ A brief discussion on the issues that should be paid attention to when selecting valves_Cai Shiji │ A brief discussion on the troubleshooting and cause analysis of the technical water supply pressure reducing valve of the Yamadu Hydropower Station │ A brief discussion of the causes and preventive measures of valve leakage │ A measuring tool for measuring the crotch width of the gate valve body │ The design of a measuring device for measuring the space size of the valve seat │ The application and improvement of the floating programmable ball valve in the S Zorb device │ The latest application research progress of the float valve tray │ Structural design and material selection of butterfly valves for seawater desalination │ Design of throttle valves for seawater │ Technical analysis and research of marine riser filling valves │ Application of energy-dissipating flow regulating valves in the Daliang Reservoir water release project of the Beiguan Line of the Yellow River to Shanxi Project │ Analysis of casting crack defects of fire hydrant valves │ Elimination of sand hole defects in large-diameter valve body castings │ Research on electro-hydraulic proportional valve electromagnets for turbochargers │ Fluent fluid dynamics analysis and optimized design of liquid filling valve │ Multifunctional pressure reducing valve for liquid pipeline │ Structure and analysis of rotary flow control valve of hydraulically driven polymer injection pump │ ANSYS finite element analysis of the effect of hydraulic force on reversing valve │ Influence of hydraulic force on vibration characteristics of poppet valve │ Actual measurement of transient motion of main spool of hydraulic multi-way valve │ Application of hydraulic clamping device in high temperature and high pressure valve pump testing │ Design and discussion of hydraulic flat plate gate valves│ Application of hydraulic reversing valves on marine cranes│ Design and application of hydraulic plate rotary valves│ Analysis of malfunction of hydraulic spectacle valves│ Analysis of domestic production status and engineering application of LNG cryogenic valves│ Selection and application of cryogenic ball valves in LNG export stations│ Development and research of top-mounted fixed ball valves for LNG│ Research on top-mounted fixed ball valve for LNG_Zhang Qingshuang_Jiang Bo_Wang Sifang_Mao Bowei │ Selection of cryogenic ball valves for liquefied natural gas Song Liang_Wang Xiu_Cheng Honghui 3 │ Multifunctional pump protection valve for liquefied natural gas │ Ultra-low temperature valve for liquefied natural gas │ Analysis and research on valve inspection standards for liquefied natural gas │ Liquefied natural gas valve and low-temperature performance test device │ Hydraulic control valve performance experiment in hydraulic transmission teaching │ Simulation analysis of the opening characteristics of the hydraulic pilot poppet valve │ Numerical simulation and analysis of the internal flow field of the hydraulic impactor distribution valve │ Working oil port control during the test process of the hydraulic multi-way valve│ Research on the material structure and performance of the gray cast iron valve body of the hydraulic multi-way valve│ Research on the failure mechanism of the hydraulic balance valve damping hole clogging│ Analysis of the material selection of the hydraulic stop valve core│ Analysis of the bucket rod circuit design in the multi-way valve for hydraulic excavators│ Research on the sand cleaning process of high-pressure multi-way valve castings for hydraulic excavators│ Experimental research on the selection of explosion-proof valves for hydraulic excavators│ Development of a microcomputer-controlled test bench for hydraulic support reversing valves │ Design of a CAT comprehensive test bench for hydraulic support valves │ Hydraulic system design of electro-hydraulic valve performance test bench for hydraulic supports │ Experimental research on automatic boosting valves for hydraulic support columns │ Common inspection problems and maintenance methods of hydraulic support valves │ Development of hydraulic non-weighted furnace top relief valves │ Characteristics and applications of hydraulic control check valves built into hydraulic cylinders │ Design and manufacturing of special fixture for hydraulic pump metering valve core│ Analysis of flow characteristics of hydraulic slide valve│ Research on clamping force of hydraulic slide valve core│ Brief analysis of causes and countermeasures of clamping phenomenon of hydraulic slip valve│ Multi-physics coupled thermodynamic analysis of hydraulic solenoid valve│ Analysis of failure mechanism and transient characteristics simulation of hydraulic solenoid valve│ Discussion of explosion phenomenon of bottom valve of hydraulic breaker low-pressure filter│ Rational use of hydraulic control check valves in hydraulic systems │ Design and application of new maintenance valves in hydraulic systems │ Hydraulic self-balancing valve test bench and pressure maintaining system │ Research on intermediate valves in hydraulic steering systems │ Current status and prospects of hydraulic rotary valve technology │ Research on control and evaluation methods of hydraulic valve port cavitation noise │ Research on control and evaluation methods of hydraulic valve port cavitation noise (Project Grant No.: 50575200) │ Quality analysis and control of hydraulic valve block manufacturing process │ Prevention and removal of hydraulic valve block burrs │ Design, manufacturing and debugging of hydraulic valve blocks │ Hydraulic valve failure analysis and elimination measures │ Manufacturing process research of hydraulic valve plates │ Development of electromagnet CAT system for hydraulic valves │ Improvement of sealing structure design of hydraulic valves │ Assembly process of hydraulic valves 5 │ Hydraulic valve test bench computer control system │ Research on the design and manufacturing method of hydraulic integrated valve block │ Analysis of the causes of cracking of the hydraulic sequence valve body │ Improvement of hydraulically driven connecting rod butterfly valves in ironmaking applications │ Research on the control characteristics of hydraulically controlled check valves in locking circuits │ Development and application of hydraulically controlled downhole flow control valves │ Hydraulic-controlled check eccentric semi-ball valves │ Hydraulic-controlled check butterfly valves and their arrangement │ Optimal design of hydraulically controlled check butterfly valve│ Analysis and improvement of liquid hydrogen stop valve failure│ Analysis of leakage causes of liquid ammonia filling ball valves and countermeasures│ Analysis of causes of valve breakage in liquid ammonia external pipelines│ Bellows stop valves for liquid chlorine│ Liquid level meter valves│ Reasonable configuration of air valves in the Linhuan Industrial Park Water Conveyance Project of Huaihe Water Diversion to the North│ Design and research of ROV transmission mechanism of deepwater gate valves│ Design and simulation of the visual position indicator of the hydraulic actuator of the deepwater gate valve │ Design and training of the solenoid valve of the deepwater blowout preventer group │ Simulation study of the dynamic characteristics of the electro-hydraulic proportional valve in the deep sea environment │ Numerical simulation study of the flow field of the concrete pump distribution valve │ Experimental study of the S-tube valve reversing system of the concrete wet shotcrete machine │ Structural design and performance analysis of the mixed flow magnetorheological valve │ Application of chaotic particle swarm algorithm in the optimization design of the electro-hydraulic servo valve │ Numerical simulation of multi-component air flow of decoking butterfly valve and optimal design of decoking flow channel │ Numerical simulation of multi-component air flow and optimized design of decoking flow channel of decoking butterfly valve │ Application of pigging valve in oil and natural gas transportation pipelines │ Coating and casting of slurry valve seat │ Application of temperature-controlled heating system in solving valve ice blockage │ Temperature control performance verification experiment and numerical simulation research of thermostatic valve │ Design of thermosensitive wax type adjustable pilot super-large displacement trap│ The influence of turbulence model on the numerical simulation accuracy of the valve│ Design improvement of exhaust valve of wet magnetic separator reducer│ Selection of valves for wet flue gas desulfurization device│ Research on dynamic optimization of dissimilation damping hole of relief pressure regulating valve│ Simple troubleshooting method for unstable control pressure of relief valve│ Selection and fault diagnosis of relief valve│ Application of slide-type control valve in high adjustability ratio│ Application of slide-type control valve│ Finite element analysis and optimization of slide valve circlip positioning force│ Static and dynamic analysis of slide valve-type ultra-high pressure hydraulic electromagnetic reversing valve│ Visual study of slide valve flow state switching│ Three-dimensional model simulation of the effect of slide valve throttle edge fillet on flow characteristics│ Research on the impact of rolling rotor compressor operating conditions on the movement of the exhaust valve│ Improvement of filter pneumatic valve gate plate discharge valve │ Application of green sand in valve steel castings │ Detection of valve cracks in in-service steel castings of thermal power plants │ Discussion on the design of fire emergency isolation valves │ Temperature diagnosis method and its application of small leakage faults of drain stop valves in thermal power units │ Solution to the deformation problem of gray cast iron knife gate valve castings │ Pneumatic control of three-way ball valves for furnace top ammonia water pipes │ Refinery condensate recovery technology │ Discussion on maintenance strategies of steam valves in refining production │ Selection of valve types for instrument measurement pipelines of oil refining units │ Design and application of flue butterfly valves │ Transformation of double-layer ash discharge valves in sintered large flues │ Electrical control of sintered flue ash discharge valves │ Design of thermal expansion valve capacity testing system │ Fault diagnosis and on-site treatment of thermal expansion valves │ Thermoplastic valves_Torque_Test methods │ Valves used in thermal power plants and district heating │ Design and functional expansion of thermal metering valve controllers │ Innovation of maintenance tools for phosphorus removal injection valves in hot rolling production lines │ Development and application of dual-stem gate valves at thermal recovery wellheads │ Structural improvement of thermostatic bimetallic traps │ Replacement of hot air furnace cold air release valves under pressure │ Flow field analysis of hot air valve plates │ Discussion on the longevity of the hot air valve plate │ Finite element simulation of the hot air valve air duct flow field │ Development and application of the coking tower bottom valve │ Troubleshooting of the coking tower bottom valve operation │ Replacement and modification of the coke oven valve body │ Analysis of the causes of coke oven valve body rupture and replacement methods │ Research on the flow performance of the valve seat of the special black water valve for coal chemical industry │ Selection of oxygen valves in coal chemical industry │ Maintenance of slag lock valve in coal chemical industry │ Technical transformation of fly ash storage tank lock bucket valve in coal chemical industry │ Discussion on selection of automatic control valves for coal gasification working conditions │ Localization and application of oxygen shut-off valve for coal gasification equipment │ Combination butterfly valve for gas │ Research and design of closed harmonic power head of gas pipeline butterfly valve │ Application and analysis of coal slurry discharge valve in coal water slurry system of coal chemical industry │ Control of valve ring end face deformation of gas turbine bypass mechanism │ Reliability analysis and countermeasures of ESD valve in natural gas pressure regulating station of gas power plant │ Brief analysis of gas polyethylene (PE) valve application │ Three-dimensional numerical simulation of flow field in gas pressure regulating valve │ Analysis and prevention of valve core jamming of gas turbine fuel three-way valve │ Characteristics and application of blasting needle type pressure relief valve │ Application and development history of blasting needle type valve in flare system │ Design of extra large diameter high temperature double gate valve │ Application of feature modeling technology in valve CAD │ Mechanism analysis and numerical simulation of piezoelectric pumps for special valves without moving parts │ Application of special valves in the oil refining industry │ Application of special valves in the oil and gas industry │ Cylinder valves for special gases │ Finite element analysis calculation and design of special valves │ Research on lubrication and leakage characteristics of independently lubricated injector needle valve parts │ Research on the control characteristics of the independent valve port control system when the flow is saturated│ Analysis and solutions to the reasons for the surge relief valve of the jade compressor to be fully opened│ Analysis and improvement of the causes of pressure fluctuations of the annular pressure regulating valve│ Application of modern advanced technology in the localization of large pipeline ball valves│ Modern coal chemical industry's requirements for wear-resistant valves│ Application forms and technical status of modern ceramic materials in valves│ Application of field bus in electric valve control│ Improvement of the process of on-site replacement of oil-immersed power transformer butterfly valves │ Glass fiber reinforced polypropylene diaphragm valve │ Glass fiber reinforced SMC valve well finite element analysis and landfill test research │ Structure and application of ball discharge valve │ Development of spherical pressure relief valve │ Ball butterfly gas valve │ Ball valve auxiliary valve body flange drilling mold fixture design │ The influence of the ball valve guide vane linkage on the draft pipe inlet pressure under successive load shedding conditions│ Design of the ball valve seat by the equilateral triangle section method│ Research on the friction resistance coefficient of the ball valve│ Numerical simulation and experimental research on the sound field of gas internal leakage of the ball valve│ Discussion on the leakage disposal method of the ball valve grease nozzle│ Simplified model and numerical simulation analysis of the ball valve flow coefficient│ Rolling processing of the ball valve body and special machine tools│ Improvement of ball valve ball grinding device │ Low temperature test of ball valve │ Analysis of causes of ball valve body fracture │ Experimental study of ball valve port flow characteristics │ Analysis of ball valve seat structure │ Walter non-standard chamfering milling cutter improves ball valve processing efficiency │ Design of bottle valve air tightness leakage quantitative detection device │ Using T68 boring machine to process large-span valve shaft hole of butterfly valve │ Pressure vacuum relief valve for low-pressure tank protection │ High-temperature resistant and high-strength jelly valve and application for underbalanced drilling │ Retrievable gas lift valve for gas lift oil production │ Ten-function electro-hydraulic directional valve group for hydraulic support │ Using circulating gas composition to guide the water chlorine adjustment of the reforming device │ Clamp design for drilling double-angle oblique holes in the valve body using a radial drilling machine │ The practice of using cable bridge plugs and check valves to solve the secondary cementing of Xinguang 2 Well │ Using plasma chemical vapor deposition to deposit ceramic membranes for valve seats and valve stems │ Selection and application of valve-regulated sealed lead-acid batteries for power systems │ Development of electric anti-shear flow automatic control valves │ Research on the working characteristics of electric discharge valves │ Design of remote control systems for electric proportional valves │ Analysis of fracture of spline couplings of electric ball valves │ Improvement of electric blind valve │ Electric vacuum butterfly valve │ Performance analysis and optimization design of electric drum vacuum valve │ Leakage causes and treatments of electric release valves │ Analysis and countermeasures of electric gate valve failure causes │ Research on setting of electric valve closing torque parameters │ Summary of maintenance experience of electric valve control system │ Analysis and research of electric valve faults │ Use and maintenance of electric valves │ Discussion on power distribution and control of electric fire dampers │ Renovation design of the electronic control part of the electric high-temperature gate valve│ Analysis and optimization design of the thermal characteristics of the electric high-temperature gate valve body│ Model and experimental study of the electronic feedback 2D digital relief valve│ Research on the wear resistance of electron beam irradiated polytetrafluoroethylene and its application on valves│ Application of electronic expansion valve in computer room air conditioners│ Experimental study of electronic expansion valve on the exhaust temperature control of inverter compressor│ Effect of electronic expansion valve on the stability of evaporator superheat degree│ Development of the electronic expansion valve flow characteristics test bench│ Research on the surface quality of the injector needle valve of electronically controlled high-pressure common rail diesel engines│ Research on the application of electrical proportional valves in hydraulic fixtures│ Improvement and application of electric pump well check valves│ Research and analysis of electrorheological valves and valve control systems│ Application of electro-hydraulic servo technology on butterfly valves│ Research on valve-controlled hydraulic motor control systems of electro-hydraulic servo proportional comprehensive test bench│ Electro-hydraulic servo rotary valve withstands high pressure and bi-directional rotating proportional electromagnet│ Instructions for use and maintenance of electro-hydraulic servo valve│ Development of integrated automatic testing system for dynamic and static characteristics of electro-hydraulic servo valve│ Analysis and structural optimization of flow field of spray stage of electro-hydraulic servo valve│ Analysis and treatment methods of common faults of electro-hydraulic servo valve│ Design of accelerated degradation test for contamination and wear of electro-hydraulic servo valve│ Research on dynamic characteristics of piezoelectric stack driver for electro-hydraulic servo valve│ Modeling and dynamic simulation research of giant magnetostrictive converter for electro-hydraulic servo valves│ Research on hydraulic bridge design and anti-pollution characteristics of electro-hydraulic servo valves│ Research status and development trends of electro-hydraulic servo valves│ Research on no-load and dynamic load response performance of electro-hydraulic servo valves│ Selection and maintenance of electro-hydraulic servo valves│ Design of comprehensive test bench for electro-hydraulic servo valves│ Factory test research on electro-hydraulic reversing valves│ Research on the application of electro-hydraulic directional valve in underwater production control system│ Application of electro-hydraulic control slide valve│ Electro-hydraulic proportional control valve and its application in hydraulic press│ Research on the application of electro-hydraulic proportional control valve in engineering machinery│ Application of electro-hydraulic proportional directional throttle valve in large injection molding machines│ Research on self-optimizing dynamic compensation of electro-hydraulic proportional directional valve dead zone│ Design of hydraulic system for testing of electro-hydraulic proportional directional valve│ Research on comprehensive test device of electro-hydraulic proportional directional valve│ Calculation and selection principles of electro-hydraulic proportional directional valve│ Application of electro-hydraulic proportional relief speed regulating valve in large hydraulic systems│ Research on dynamic characteristics of electro-hydraulic proportional relief valve│ Design and research of electro-hydraulic proportional relief valve characteristic test bench│ Experimental research on dynamic characteristics of electro-hydraulic proportional throttle valve│ Research on application of electro-hydraulic proportional throttle valve on die-casting machine│ Steady-state hydraulic power analysis of the electro-hydraulic proportional speed control valve throttle core│ Analysis of chatter signals in PWM control of electro-hydraulic proportional valves│ Application of electro-hydraulic proportional valves in the deviation correction control system of long-line aluminum production lines│ Design and research of electro-hydraulic proportional valve control circuits│ Research on electro-hydraulic proportional valve-controlled semi-active shock absorbers│ Research on the superposition method of independent vibration of electro-hydraulic proportional valves│ Research and design of controllers for electro-hydraulic proportional valves_Yu Zhongbin│ Performance analysis of electro-hydraulic proportional valve and experimental research on its application in hoist braking system│ Design and experimental research of electro-hydraulic proportional valve_Wang Guosheng│ Application of electro-hydraulic valve in quantitative loading system│ Analysis and treatment of electromagnetic pilot valve core failure│ Special aircraft hydraulic system failure and diagnosis caused by electromagnetic reversing valve│ Static characteristics and simulation of electromagnetic proportional multi-way reversing valve in the fine-tuning range│ Structural design and performance testing of electromagnetic proportional pressure relief valve│ Modeling and characteristic simulation of new throttle groove of electromagnetic proportional throttle valve│ Design of solenoid speed regulating valve controlled hydraulic cylinder driving cutting device│ CFD analysis of the internal flow field of solenoid valve│ Application of solenoid valve redundancy on control valves│ Application of solenoid valve redundant configuration on control valves│ Design of solenoid valve action life test system│ Selection and application of solenoid valves in fan anti-surge control system│ Development of solenoid valve controlled semi-active suspension adjustable shock absorber│ Development and experimental research of solenoid valve test device│ The working principle of solenoid valve and its application in chemical equipment │ Selection and application of check valve in power station │ SA217 for power station_Repair welding process of C12A cast steel valve body │ Design of welded cast steel gate valves for power stations │ Magnetic driven small diameter socket weld ball valves for power stations │ Design of high pressure differential valves for power stations │ Optimization and treatment of stress at plugged valves in main steam pipes of power station boilers │ Research on surfacing materials for sealing surfaces of power station valves │ Research on high-temperature corrosion-resistant materials for surfacing of sealing surfaces of power station valves │ Nominal pressure of power station valves │ Anti-corrosion and wear-resistant treatment of power station valves │ Fault detection technology of traps 2 │ Correct selection, installation and use of traps 4 │ Research on the structure of trap stop valves │ Trap pipeline design and energy saving 5 │ Common problems and countermeasures in the application of traps │ Structural form and working principle of traps Anonymous paper │ Overview of trap selection and installation 1 │ Research and application of welding technology of valve shell and pipe fittings of million-kilowatt ultra-supercritical steam turbines │ Analysis of aerodynamic torque of reheat butterfly valve plate of million-kilowatt nuclear power steam turbine │ Application of disc valve in Shell coal gasification │ Application of disc valve in coal gasification device │ Improvement of blind plate valve structure │ Research on valve port pressure characteristics of direct-acting hydraulic relief valve │ Research on frequency response characteristics of direct-acting electro-hydraulic proportional pressure reducing valve │ Theoretical analysis of static characteristics of direct-acting conical relief valve │ Technical requirements for the selection of direct-buried fully welded electro-hydraulic linkage ball valve │ Development of DC-type liquid hydrogen stop valve │ Application of DC-type back pressure valve in liquefied petroleum gas metering system │ Application of DC-controlled electromagnetic three-way rotary valve in single well metering │ Research on the characteristics of linear motor oil pump valves under different working conditions │ Analysis of working performance of linear motor oil pump valve assembly │ Application of direct-reading anti-freeze blocking constant pressure sleeve air valve │ Straight-through check valve │ Analysis of characteristics of direct-driven impact hydraulic valve and its hydraulic system │ Dynamic simulation research on the internal flow channel of direct-driven cartridge valve │ Vacuum valve product quality classification jbt53023 │ Analysis of axial rupture of short series butterfly valve body │ Quality control and management before installation of petrochemical engineering valves │ Research on the connection form of valve body and valve cover of high-pressure valves for petrochemical use │ Selection and installation of gate valves in petrochemical pipelines │ Analysis and countermeasures for valve leakage in petrochemical pipeline stations │ Analysis and countermeasures for valve leakage in petrochemical industry │ Micro-leakage type test of petrochemical valves_Muke is here_Huang Haijun │ Analysis and application of valve positioner diagnostic function in petrochemical field │ Three-dimensional parametric design of oil wellhead gate valve body │ Analysis and control of leakage of valves used in petrochemical industry │ Selection of control valves under harsh working conditions in petrochemical industry │ Installation of traps and heat tracing valve groups in petrochemical plants │ Valves for petrochemical plants │ Valve sealing principles and leakage treatment of petrochemical plants │ Design and calculation of concealed stem gate valves for oil and gas drilling and production wellheads │ Discussion on valve technical conditions for hydrogen sulfide-containing working conditions in the oil and gas industry.docx │ Construction of emergency shut-off valve interlocking control scheme for oil depots │ Technical status and development trends of control valves in the petroleum and petrochemical industry │ Application analysis of laser composite strengthening technology for key valves in oil pipelines │ Analysis of valve stem fracture failure for oil drilling equipment │ Preventive measures for lax electric valve closing in the fire protection system of Shixi Centralized Treatment Station│ Influence and optimization of the valve core of the discharge valve of the mining emulsion pump│ Abrasive belt grinding and its application in valve production│ Application of hardening technology in industrial valves│ Structural design of carbon steel valve castings│ Analysis and calculation of the torque of magnetically driven gate valves│ Application analysis of hydraulically controlled check valves in magnetic field presses│ Effect of magnetic fluid on the dynamic characteristics of servo valve torque motor│ Design of magnetorheological pilot relief valve│ Research on magnetorheological digital valve│ Application of magnetic valve type controllable reactor in electrified railways│ Measurement of magnetic valve type controllable reactor loss│ Test method of load characteristics of magnetic valve type controllable reactor│ Research on grinding technology of abrasive slurry flow needle valve body│ Application of phosphating in valve manufacturing industry │ Phosphoric acid_Selection of pipelines and valves for ammonium phosphate industrial equipment 4 │ Research on the leakage problem of gate valves in ammonium phosphate solution │ Application of ion nitriding in high-pressure valves │ Application of load cells and electromagnetic proportional valves in double-sided grinders │ Application and improvement of programmable valves in PSA process │ Application and maintenance of programmable valves in pressure swing adsorption devices │ High-pressure gate valves for steam injection in heavy oil thermal recovery │ The influence of the chamfer size of the valve core of the pressure stabilizer spray valve on the flow │ Technical modification and maintenance of the pneumatic valve and inlet guide vane of the air separation equipment │ Analysis and treatment of the fluctuation of the air compressor vent valve │ Research on the processing technology of the air compressor valve cover │ Analysis and treatment of the causes of leakage of the check valve packing in the air system │ Design of the speed limit valve of the air screw drilling tool and numerical simulation of the flow field │ Comparative study of the air valve performance test equipment│ Development of air valve flow resistance and flow coefficient testing system │ Research on the formation cracks of air conditioning compressor flange valve port │ Development of special machine for processing the end hole and inner surface of air conditioning four-way valve │ Research on calculation of erosion and wear of cage type throttle valve │ Research on the change rules of cage type throttle valve opening and flow area │ Selection of cage type throttle valve and calculation of CV value │ Cage type single seat valve │ Hydraulic cycle test and CFD analysis of the bypass valve of a screw drill with equal wall thickness│ Application of plasma surfacing copper-based alloy powder on valves│ Fuzzy control of the feeding valve of the silo quantitative loading system│ Tightening torque control of the cylindrical shock absorber recovery valve system│ Simple and reliable new valve repair method│ Brief description of the opening pressure and opening time of the pressure relief valve│ Research and application of pipe force control valve│ The technical status and development direction of pipeline ball valves │ Analysis of pipeline ball valve self-draining valve seats and double-piston effect valve seats │ The impact of pipeline effects on the response speed of excavator multi-way valves │ Low-temperature leakage test of pipeline connectors/valves │ Pipeline ball valve failures and countermeasures - Lin Yuanmao 4 │ The ultimate control of pipelines is valves │ Causes and prevention of pipeline valve leakage Dai Weimin 2 │ Selection and installation of pipeline valves│ Automatic control of electric arc valves for grate coolers│ Flow resistance analysis of quasi-fractal Y-shaped bifurcated flow tube valveless piezoelectric pumps│ Design of pinch valves for powder pipelines│ Development of powder metallurgy two-speed hydraulic valve discs│ Application and localization improvement of pulverized coal three-way valves in Shell pulverized coal gasification│ Valve selection for viscous media│ Simulation analysis of vibration phenomenon of precision pressure reducing valve │ Development of precision pressure reducing valve │ Manufacturing and processing of precision hydraulic valve spool pair │ Emergency shut-off valve │ Application of emergency shut-off valve on Chengdao oil production platform │ Processing of emergency shut-off valve cylinder │ Emergency pneumatic shut-off valve fault diagnosis and treatment methods │ Design discussion of emergency block valve (EBV) in modern large-scale refining and chemical plants │ Research on noise control of pure water hydraulic relief valve│ Numerical simulation research on cavitation flow field of pure water hydraulic poppet valve│ Simulation analysis and experimental research of pure water tubular relief valve│ Summary of valve usage in soda ash enterprises│ Application of combined guide float valve tray in five decarbonization towers│ Numerical simulation of multiphase flow of combined guide float valve tray│ Research on plate efficiency of combined guide float valve tray│ Research on the torque control mechanism of combined disc spring type nuclear-grade valve electric device │ Design and test of combined valve bypass flow type ECHPS controller │ Application of combined high-efficiency guide float valve in aviation fuel tower │ Working principle and flow characteristics of "Y"-shaped flow tube valveless piezoelectric pump for cell or polymer transportation │ Simulation and analysis of the influence of structural parameters on the unloading valve of pumping station │ Knowledge of valve selection in water supply and drainage engineering │ Analysis and calculation of the modification of the water supply pump turbine quick-closing valve │ Construction of water supply pipeline valves and valve wells │ Research on the characteristics of the high-speed solenoid valve of the injector of the direct injection gasoline engine in the cylinder │ Calculation of the installation position of the tank farm drainage valve │ Design of the combined discharge valve of the tank container │ American standard valve code description │ Analysis of the two-phase flow field of the valve core flow channel of the flap float valve │ Installation position and working effect of the flap valve 2 │ Electro-hydraulic shaking table modeling considering the dynamic nonlinear characteristics of servo valves │ Study on the reliability model of membrane interlock valves considering the influence of component interaction │ Improvement of air flow pulsation simulation considering the influence of valve cavity │ Improvement of wear-resistant and corrosion-resistant ball valve structure │ Microstructure and corrosion behavior of new stainless steel for corrosion-resistant valves │ Discussion on troubleshooting of interlock valve feedback │ Analysis of the reasons for blockage of the discharge valve of the flash tank of polypropylene device │ Repair and modification of polypropylene rotary valves │ Polyperfluoroethylene plastic properties and valve lining technology │ Identification and numerical simulation of polymer flow patterns in low-shear flow control valves │ Design and research of electromagnetic stop valves for polyurethane pouring machines │ Long-term operation management of PDS valves in polyolefin plants │ Analysis and solutions to thermal locking of plug valves │ Design of expansion-contraction lightweight gate valves │ Electrical design of valve halls in back-to-back converter stations │ Problem analysis and measures for the water cut valve of the crude oil electric desalting tank of Shengli Refinery │ Improvement and application of the gravity thrust check valve at the wellhead of the water injection well in Shengtuo Oilfield │ Aluminum alloy right-angle stop valve with internal thread in the hose (CB565-77) │ Aluminum alloy stop valve for the hose joint (CB566-77) │ Optimized design of the pulser solenoid valve │ Simulation and experimental research on diaphragm type pilot hydraulic pressure relief valve│ Development of diaphragm type pilot hydraulic pressure relief valve│ Application of diaphragm type quick opening sludge valve in water purification plant│ Improvement of diaphragm type quick shut-off valve│ Research on transient numerical simulation method of diaphragm pressure stabilizing relief valve│ Design and calculation of diaphragm pressure stabilizing relief valve│ Research on the impact of expansion valve characteristics on compressor performance test accuracy│ Application of self-operated differential pressure control valve in air-conditioning system│ Model and calculation of closing time of self-operated liquid level control valve│ Numerical simulation and optimization of flow field of self-operated temperature control valve│ Analysis of performance and fault relationship of automatic pressure-maintaining weight hydraulic control butterfly valve│ Failure analysis of automatic pressure-maintaining weight hydraulic control butterfly valve│ Design and simulation research of automatic transmission shift solenoid valve│ Research on dynamic response characteristics of automatic transmission electro-hydraulic proportional shift valve│ Automatic exhaust valve │ Requirements for valves in automatic control systems │ Laser strengthening research on the flow end cap of automatic flow balancing valve │ Application of automatic temperature control valves on acrylic balers │ Misunderstandings in the application of automatic valves │ Valve wait-blind areas in automatic valve operation │ Design of self-balancing dual-way return valves │ Development and application of self-balancing one-flow valves │ Adaptability analysis of the venting and ignition system of the station valve chamber in the Zigong gas transmission operation area │ Optimal design and numerical research of marine purge valves │ Development of cast steel valve casings for marine diesel exhaust valves │ Analysis of laser cladding of Stellite alloy on the cone surface of marine diesel exhaust valves │ Discussion of simulation measurement methods for flow resistance coefficients of marine fire valves │ Research and analysis of hydraulic actuators of marine butterfly valves │ Standard usage guide for marine valves │ Design of dual-redundancy reversing valve control system for marine hydraulic steering gear│ Emerson adds mobile diagnostic function to the control valve in the Foundation fieldbus network│ Emerson launches new butterfly valve│ Research on flow control characteristics of throttle slot valve port│ Structural improvement of slurry gate valve for throttling│ Research on the condensation law of natural gas components in the throttle valve│ Several issues in the application of throttle valves in the Tarim Oilfield│ Design of throttle chip filter device│ Experimental study on the effect of throttle valve opening on heat transfer performance of self-cascading refrigeration cycle condensation evaporator│ Selection of throttle valve bellows length│ Improvement of throttle valve disc│ Throttle valve core vibration failure analysis and structural improvement│ Application of energy-saving micro-resistance slow-closing check valve in urban pipeline network│ Arrangement and piping of adsorption tower and rotary valve of aromatic hydrocarbon device│ Design of valve body of British standard external balanced rotary check valve│ The relationship between the opening of the throttle valve and the number of cloth turns in Laiwu Iron & Steel No. 2 blast furnace │ Several issues in steam condensate recovery technology │ Discussion on steam condensate recovery plan │ Steam condensate recovery energy-saving technology │ Recycling and utilization of steam condensate 2 │ Optimization and transformation of steam and condensate recovery system 4 │ Design and noise analysis of steam control valve_Liu Ruya_Wang Hui_Wang Jianhua_Liu Xiaoguang 5 │ Selection and design of steam vent valve │ Ball valve for steam │ Application of steam trap in production │ Steam trap and correct selection method 4 │ Steam trap and correct selection method │ Detection of internal leakage of steam trap │ Application of steam trap in petrochemical enterprise production │ Research on hysteresis of steam trap bellows │ Selection and application of steam traps │ Principles of steam trap selection │ Technical transformation of steam pipe network vent valves │ Selection of steam pipeline traps and common fault analysis │ Discussion of steam valve maintenance strategies │ Processing research on main steam valves and medium-pressure reheat valves of steam-burning combined cycle units │ Thin-wall support ring valve seat processing methods │ Application of virtual reality technology in valve design │ Analysis of problems existing in the switching process of butterfly valves │ Structural analysis and optimized design of butterfly buffer check valve │ Movable butterfly plate soft seal butterfly valve │ Research on butterfly valve processing and assembly technology │ Butterfly valve double-position display transmission device │ Structural analysis of butterfly valve sealing wedge angle │ Theory analysis of technological evolution of butterfly valve sealing structure │ Butterfly valve performance test bench │ New progress in butterfly valve technology │ Improvement of electrical control circuit in butterfly valve modification work │ Numerical simulation and analysis of butterfly valve flow field │ Structural improvement of butterfly valve hydraulic drive device │ Filled sealing ring for butterfly valve │ Ni of butterfly valve_P brush plating technology and pretreatment process │ Use, maintenance and inspection of butterfly valves │ Calculation of hydrodynamic torch of butterfly valve 4 │ Calculation of hydrodynamic torch of butterfly valve │ Evolution of butterfly valve and design and calculation of three-eccentric butterfly valve │ Selection and installation of butterfly valve │ Improvement of the connection structure between butterfly plate and sealing ring pressure plate of butterfly valve │ Design and selection of butterfly valve │ Factors to be considered in butterfly valve design │ Repair, improvement and processing of butterfly valve metal sealing surface │ Processing of butterfly valve body stem hole │ Installation structure of butterfly valve stem rolling bearing │ Processing of butterfly valve disc shaft hole │ Calculation of inner diameter reduction of butterfly valve shaft copper sleeve │ Standardized design of butterfly valve parts │ Theoretical and experimental research on piezoelectric pump of spiral linear valve │ Screw air compressor intake valve flow-pressure difference experimental research │ Compensating the impact of tensioning and lifting butterfly valves on the reinforced factory building │ Oil-charged hydraulic motor valve pump parallel time-sharing structure control speed regulation system │ Bushing plug valve failure analysis and treatment strategies │ Fluorine-lined pump valve process technology and its application areas │ Processing and testing of rubber-lined butterfly valves │ Improvement of rubber-lined butterfly valve structure │ Analysis of the reasons for poor switching of the cracking furnace switching valve │ The influence of furnace loading method on the sintering deformation of iron-based valve plates for refrigeration compressors │ Analysis and prevention of spring fracture failure of loader distribution valves │ Research on D32 hydraulic multi-way reversing valves for loaders │ Calculation and analysis of pressure drop rate of cut-off valves of the Second West-East Gas Pipeline Line │ Interpretation of maintenance diagnosis of valve actuators │ Application of counters in valve electric devices │ Research and application of automatic control of multi-way valves in metering stations │ Leakage detection and emission estimation of equipment and pipe valves │ Design and manufacture of pressure test tooling to improve valve pressure test efficiency │ Methods to evaluate control valve cavitation damage │ Discussion on the design of plug valves │ Design of balanced valve core of pressure regulator │ Research on multi-stage series zinc oxide valve plate protection structure of pressure regulating winding │ Analysis of flow stability of speed regulating valve │ Analysis and selection of two common structures of speed regulating valve │ Research on the influence of the servo valve parameters of the negative flow control mechanism on the dynamic characteristics of the variable pump │ Measures to improve the spool of the load feedback type proportional multi-way valve │ Research on the dynamic characteristics simulation and parameter optimization of the load-sensitive balancing valve │ Analysis and research on the stuck phenomenon of the load-sensitive valve spool │ Analysis and preventive measures for the malfunction of the water hammer relief valve in Guiyang Oil Transmission Station │ Process optimization of the lifting and tilting valve castings │ Development of a crane hydraulic multi-way reversing valve test bench │ Development of a crane hydraulic balance valve detection system │ Super (super) critical electric high plus three-way valve body strength stress analysis │ Supercritical stop valve body strength stress analysis │ Supercritical steam turbine reheat main steam valve jamming analysis │ Supercritical steam turbine unit feed water pump recirculation system valve application and improvement │ Research on supercritical high and low pressure bypass valves │ Structural design of ultra-low temperature stop valve │ Design of diaphragm of ultra-low temperature pressure regulating valve │ Austenitic stainless steel for ultra-low temperature valve │ Application of over-pressure relief valve scheme in Dahuofang Reservoir water transfer project │ Discussion on the application of ultrasonic leak detection technology in valve air seal test │ Development of a complete set of butterfly valves for ultra-large intelligent flow control equipment │ Ultra-fast opening stop valve │ Harm of ultrafiltration valve leakage to membrane equipment and control measures │ Improvement of ultra-short ball valve end cover structure │ Structural and modeling research of super magnetostrictive two-stage electro-hydraulic servo valve │ Modeling and dynamic simulation research of super magnetostrictive direct-acting high-frequency electro-hydraulic servo valve │ Pressure reducing valve for ultrapure water hollow fiber ultrafiltration device │ Numerical analysis of valve startup thermal stress of ultra-supercritical 600MW steam turbine unit │ Closing transient dynamics analysis of the self-operated hydraulic high water supply three-way valve of ultra-supercritical units│ Research on localization of valves for ultra-supercritical thermal power units│ Research on speed stability of independent port directional valve control system under overload Ultra-high pressure small diameter forged steel stop valve│ Analysis of the axial sealing force of the ultra-high pressure stop valve stem│ Research on ultra-high pressure pneumatic pressure reducing valve│ Numerical analysis of the electric field of the valve side lead line of ultra-high voltage DC converter transformer│ Dynamic strength check analysis of ultra-high pressure pulse valve body│ Analysis of ultra-high pressure pulse valve thread connection strength│ Research on sealing structure technology of ultra-high pressure gas production wellhead flat gate valve│ Theoretical modeling of ultra-high pressure metal rubber precision flow valve │ Analysis and test of heat transfer in ultra-high temperature valve seat cooling channel │ Development of ultra-high temperature and high pressure hydraulic angle stop valve for ultra-high speed wind tunnel │ Research on large thrust output device of electric actuator for ultra-(super)critical valves │ Design of fixture for turning valve body holes │ Adjustable fixture for turning wedge gate valve body sealing surface │ Research on general methods of fault diagnosis of automotive solenoid valves Research on pressure field and velocity field of vehicle-mounted high-pressure pneumatic pressure reducing valve│ Simulation of dynamic characteristics of digital proportional relief valve for vehicle gear shifting│ Orbital plug valve│ Application and failure analysis of orbital ball valve in ammonia synthesis device│ Application of technical transformation of orbital ball valve actuator│ Calculation and analysis of dynamic characteristics of rotor pump outlet ball valve│ Development of cup valve for converter dry dust removal│ Discussion on the valve setting on the air inlet pipe of the primary dust removal fan of the converter wet dust removal│ Research on the necessity and effect of the transformation of the three-way valve of the converter gas fan│ Development and application of the soft seal gate valve│ Research and application of the soft plunger retrievable fixed valve oil pump│ Fire resistance test of the valve with soft valve seat turning 1-4 times API607 4th edition 1993│ Application of the axial flow check valve│ Structural analysis and design of axial flow check valve disc │ Design and implementation of air source pressure maintaining device of axial flow fan anti-surge valve │ Renovation of manual valve chamber data remote transmission system of gas pipeline │ Research on pressure drop rate setting value of gas pipeline line cutoff valve │ Design and implementation of oil pipeline control valve │ Winter maintenance and maintenance of regulating flat gate valve of oil pipeline │ Ball valve for natural gas transmission and flat gate valve for oil pipeline │ Structural and material selection analysis of flat gate valves for conveying oil and natural gas │ Design of ball valves for conveying slurry │ Analysis of medium lift characteristics and spring stiffness of overflow valves │ Countermeasures for non-stop processing of damaged filter pressure reducing valves │ Research and design of filter distribution valves │ Using QC methods to reduce the clogging frequency of the discharge valve of wet sulfur molding machines │ Using design methodology ideas to design valve solutions │ Methods for troubleshooting valve failures of hydrogen-cooled generators during operation │ Setting up the boundary valve platform of the inlet and outlet device │ Localization of imported compressor gas valves and their applications │ Research on the localization of imported nuclear power reheat valve actuators │ Design of intake and exhaust valve displacement testing devices │ Three-dimensional solid design of water inlet valves │ Remote operation line cutoff valves │ Structural analysis of connecting rod butterfly valves │ Research on continuous fiber reinforced fiberglass ball valves │ Discussion on the selection of outlet valves in water delivery pump rooms │ Design principles of multi-nozzle sleeve type flow regulators adapted to water hammer control │ Application of turbine bypass valves │ Universal valve body opening clamp │ Universal valve materials │ Determination of leakage level of air duct valves in ventilation systems and their testing methods │ Characteristics and adjustment methods of quick-acting hydraulic relays and pressure relief valves │ Causes and solutions of common faults in valve inspection in the gas generation section │ Causes, hazards and treatments of common faults in valve inspection in the gas generation system │ Characteristics of valves in the papermaking industry │ Research on the efficiency of corrugated guide float valve trays under partial reflux │ Design and calculation of valves for sour oil and gas │ Design and calculation of valves for sour oil and gas │ Application of balance valves in heating water systems │ Research and application of oil replacement under pressure in gas production wells and energy-saving technology for casing valves │ Design and use of concealed stem display mechanisms for gas production valves │ Using external leakage to improve the constant pressure accuracy of pilot relief valves │ Experimental research on power consumption characteristics of cold water pumps using constant pressure difference control by bypass valves │ Research on the dynamic characteristics of mobile fire water monitors using valve-controlled cylinders for automatic reversal control │ Selection of wear-resistant materials for flat gate valves in heavy media system pipelines │ Gravity-type valveless filter water-saving renovation │ Design of two-valve joint control EGR system under all working conditions of heavy-duty diesel engine │ Online detection of trace moisture in reforming unit │ Design of high-pressure ball valve for heavy oil hydrogenation unit │ Design and optimization of valve body structure of hammer-type hydraulically controlled butterfly valve │ Design of tailor-made control valve flow characteristics │ Anti-corrosion measures for metal valves │ The role of metallographic analysis in the quality control of valve steel castings │ Application of cauldron bottom valve in FMTP project │ Improvement of needle throttle valve stem connection structure │ Research on the problem of non-durability of needle valve body │ Cold extrusion processing design of needle valve body hole │ Establishment of flow rate growth regression equation during needle valve body grinding process │ Application of titanium alloy in marine valves │ Application of titanium alloy valve and its material selection │ Tensile test analysis of steel gate valve stem and gate plate │ Commonly used main materials for steel valves │ Application of steel-backed composite bushings on butterfly valves │ New technology for water supply valves in water pumping stations of steel companies - multi-functional hydraulic control valves │ Design and research of drilling pump valves │ Drilling fluid DPSK signal demodulation and rotary valve control pulse reconstruction │ Analysis of rotary valve design and signal characteristics of drilling fluid continuous wave generator │ Analysis of the structure and failure reasons of the blowout prevention check valve in the drill string │ Deformation rules during the preparation process of iron-based powder metallurgy valve plates │ Installation method of 120 valves and car bodies for railway freight cars │ Three-dimensional flow field simulation of shock absorber pressure regulating valves of railway vehicles │ Structural design and static characteristics calculation of relief valves in aluminum alloy hydraulic valve islands │ Dynamic simulation of hydraulic characteristics during the opening process of silver plate ship gate valves │ Analysis of cast stainless steel valve body cracks │ Cast integral multi-way valve │ Repair of defects in cast aluminum bronze valves. │ Cast steel small-diameter valve cover with flat vertical pouring │ Optimized design of cast steel wedge gate valve │ Improvement of cast steel valve body riser │ Discussion on powder coating process of cast iron valves │ Analysis of corrosion resistance of cast iron valves │ Failure cause analysis and modification of lock bucket pressure relief valve │ Gas path improvement plan for overtime action of slag lock valve │ Application of slag lock valve in coal water slurry pressurized gasification device │ Design and application of slag locking valve│ Design and improvement of slag locking valve stem│ Modification of boiler feed water pump speed regulating valve lever clamp│ Application of zinc-based alloy in valve transmission parts│ Design and research of anchor drilling rig rig control valve group test bench│ Application of cone valve and energy dissipation chamber in flood discharge and energy dissipation of the discharge hole of Bagong Hydropower Station│ Characteristics research and flow field numerical simulation of cone valve port slide valve│ Research on the "squealing" phenomenon of poppet check valves│ Research on steady-state hydraulic power compensation of poppet valve cores│ Research on the application of bonding diagrams in electro-hydraulic proportional multi-way valve modeling│ Analysis and research on the processing technology of forged stainless steel valve bodies│ Selection of end valves in long-distance pipeline pressurized gravity water transmission projects│ Discussion on the performance of exhaust valves in long-distance water transmission projects│ Accuracy control of flow regulators in long-distance water transmission projects│ Analysis of the hydraulic transition process of overpressure relief valves for long-distance water transmission│ Design and selection of vacuum break valves for long-distance water transmission projects│ Analysis and processing of abnormal shut-off events of trunk valves for long-distance natural gas pipelines│ Structural characteristics and applications of ball valves for long-distance natural gas pipelines│ Introduction and fault analysis and treatment of electric control valves for long-distance pipelines│ Power supply design of remote control valve chambers for long-distance pipelines│ Hydraulic transient analysis and transient working condition test of pressure relief valves in long-distance pipelines│ Application and improvement of pressure relief valves in long-distance pipelines│ Selection of closed condensate recovery systems│ Sealing performance of closing parts of closed-circuit valves│ Research on indirect valve position measurement technology│ Analysis of gate valves and check valves in coal mine water pump installation positions│ Research and practice of gate valve parametric design methods│ Emergency treatment for gate valve packing gland breakage │ Analysis of common gate valve failures and improvement measures │ Discussion of gate valves and common troubleshooting │ Gate valve body inlaid seat hole measurement measuring tool │ Analysis of causes of gate valve seat deformation and improvement measures │ Gate valve seat extrusion device │ Improvement of gate valve stem nut and bearing gland structure │ Analysis of reasons for gate valve plate falling off and solutions │ Discussion on the strength calculation method of the studs (threads) connecting the valve body and the valve cover│ Comparison of the calculation formulas of the bolts connecting the valve body and the valve cover│ Theoretical basis of the valve body force and strength calculation formula│ Design of the separable Y-shaped globe valve with a valve body│ Valve body four-ring position stress analysis and optimization design│ Valve body alignment gauge│ Discussion of valve body stress classification and strength assessment│ Comparison and analysis of valve body strength calculation│ Valve body fracture failure analysis │ Analysis and solution of valve body trapezoidal thread sticking failure │ The origin and applicability of the valve body wall thickness calculation formula for valve body wall thickness │ Control of porosity defects in valve body castings │ Research on valve body forging manufacturing process │ Valve trim parts wear and material selection │ Simulation and experimental research on pressure pulsation in front of the valve │ Valve hall intelligent inspection robot system │ Study on the static characteristics of the dynamic pressure balanced direct-acting relief valve at the valve port │ The influence of the valve port opening on the pressure and flow characteristics of the two-way cartridge valve │ Research on the influence of the valve port shape on the cavitation flow field of the pure water hydraulic poppet valve │ Analysis of the scaly knife marks in the valve block orifice processing │ Analysis of the flow field of the conical valve with a tapered valve seat │ Discussion on the industrial application of the valve-type continuous circulation drilling device │ Analysis of electrohydraulic valve clogging problem of valve-controlled liquid-filled hydraulic coupling│ Maintenance and monitoring of valve-controlled lead-acid battery VRLA│ Analysis and compensation research of valve-controlled asymmetric cylinder friction│ Effect of valve-controlled asymmetric cylinder friction on cylinder pressure│ Research on decoupling control of passive electro-hydraulic servo system of valve-controlled asymmetric cylinder│ Nonlinear modeling and simulation of valve-controlled motor│ Research on Optimization of Valve Stem Cylindrical Forming Grinding Process │ Reasons for Valve Stem Seal Leakage and Solutions │ Improvement of Valve Stem Sealing Structure │ Research on Valve Stem Material’s Resistance to Corrosion and Cracking in Hydrogen Sulfide Environment │ Analysis of Reasons for Valve Stem Nut Fracture │ Discussion of Valve Stem Nut Materials and Standards │ Improvement of Valve Stem Nut Structure │ Valve Stem Nut (6) jbt1701 │ Valve stem soft packing sealing performance analysis and structural design │ Design and application of automatic high-speed valve sorting machine │ Effect of valve core diameter on the performance of hydraulic poppet valve │ Design of laser alloying fixture for valve core end cap working surface │ Research on laser alloying process of valve core end cap working surface │ Laser alloying scanning path planning for valve core end cap working surface │ Effect of valve core structure on the flow resistance characteristics and internal flow characteristics of throttle stop valve │ Simulation analysis of the influence of valve core screw pitch on the performance of digital hydraulic cylinders │ Design and simulation of cam curves in valve-controlled radial piston pumps │ Design and development of valve CAD2000 system │ Simulation calculation of temperature field distribution rules of steam drain pipes under different leakage conditions of valves │ Design of thrust plates for connecting valves and electric devices │ Valves and energy saving │ Analysis of flange gaps in valves │ Suitable working temperatures of steel and alloys for valve main parts 5 │ Analysis of factory inspection and type test standards for valve products │ Discussion of valve product manufacturing supervision and inspection │ Production and technical management procedures of valve products and accessories │ Precautions for valve companies in API audits │ Economical design of valve low-temperature test equipment │ Analysis of the mechanism of aerodynamic noise generation during valve use │ Research on characteristics of acoustic emission detection signals for internal leakage in valves │ Application of valve lining ceramic coating │ Development and application of valve manufacturing process design software 2 │ Development and application of valve manufacturing process design software │ Current status of valve manufacturing technology │ Discussion of type test regulations related to valve manufacturing license │ Valve pressure test process and device 3 │ Valve pressure test process and device │ Valve variable speed drive device design │ Test and research of valve opening and closing torque continuous test device │ Comparison and selection of international valve standards │ Application and selection of valves in pneumatic conveying systems 4 │ Application of valves in oil refining units │ Discussion of common problems in valve type testing │ Valve stuffing box shunt method to eliminate leakage at pipeline weld joints │ Brief analysis of valve stuffing box calculation methods │ Elimination of valve packing leakage │ Analysis and research on valve shell wall thickness calculation formulas │ Discussion on the measurement and evaluation method of wall thickness in local area of valve housing│ Valve housing fracture analysis│ Research on CNC programming technology of valve housing series parts│ Valve positioner and intelligent analysis│ Valve positioner pneumatic transmission system modeling and MATLAB simulation analysis│ Discussion of valve positioner installation and adjustment methods│ Calibration method of valve sealing packing performance test│ Application of valve sealing material PAST reinforced nylon│ Analysis and discussion of valve sealing test standards and methods │ Analysis and discussion of valve sealing test mounting methods │ Research on the thickness of the surfacing layer on the valve sealing surface │ Research on the high temperature wear resistance of the surfacing material on the valve sealing surface │ Research on No. 137 alloy for manual surfacing on the valve sealing surface │ Discussion on the structure and seat back performance of the valve sealing surface │ Processing tools for the metal surfacing layer on the valve sealing surface │ Research on high-temperature wear-resistant surfacing flux for valve sealing surface│ Development of valve life test bench│ Analysis of transient flow caused by valve opening│ Causes and prevention of valve spring failure│ Valve manual operation guide: MSS SP—91———1992 (R1996) │ Analysis and application of the calculation formula for the minimum wall thickness of valve pressure-bearing parts │ Valve failure analysis and classification │ Valve failure and its prevention │ Self-repair and on-site maintenance management of valve failures │ Overview of valve fault diagnosis technology │ Comparative analysis of the nitriding mechanism and nitriding results and performance of valve materials 9Cr18MoV and 1Cr18Ni9 │ Seismic analysis of nuclear-grade pneumatic actuators of valves │ Valve cavitation research │ Leak detection valves for valve hydraulic testing │ Cause analysis of valve leakage and optimization of design selection │ Automatic detection device of valve leakage │ Methods and precautions for valve activity performance testing │ Valve flow resistance testing device │ Development of data monitoring system for valve flow resistance testing device │ Valve leakage molding machine │ Research on valve thermal spraying technology │ Valve thermal stress analysis and research │ Online monitoring of valve status │ Experimental research on valve ring bolt assembly assembly process │ Valve ring bolt assembly assembly process finite element simulation │ Performance analysis of CF stainless steel castings for valves │ Special material bellows for valves │ Granular packing for valves │ Corrosion-resistant duplex stainless steel for valves │ Selection of operating temperature of auxiliary materials for valves │ Finite element analysis of the fatigue life of metal bellows for valves │ Selection and application of metal bellows for valves │ Selection and research of copper alloy materials for valves │ Anti-rotation structure of valve electric lifting rods │ Design of valve electric actuators and channel testers │ Fault diagnosis research for valve electric actuators │ Analysis of the main transmission structure of valve electric devices │ Valve electric devices and key points for their selection │ Improvement of the wire lap connection process of valve electric devices │ Problems and countermeasures of valve electric device opening indication system │ Research and application of valve electric device testing system │ Classification and selection of valve electric devices │ Analysis of valve electric device stroke mechanism transmission type │ Practical anti-rust technology of valves 4 │ Valve micro-leakage level and industrial application │ Valve inspection and testing │ Valve leakage and treatment methods │ Valve flow test and analysis │ Valve cleaning and rust prevention │ Fire resistance test of valves │ Valve selection and technological development │ Research on valve fire resistance test methods │ Valve corrosion failure analysis and treatment │ Valve bolt fracture failure analysis │ Valve industry "Eleventh Five-Year Plan" localization development trend │ Valve industry short-term and long-term overview │ Valve industry high-tech development trends and investment directions │ Facility planning and simulation of valve assembly workshops │ Improvement of valve pressure test pumps │ Valve pressure test device │ Valve quality and standards 4 │ Valve selection standards and requirements │ Factory practice of valve emission testing standards │ Quality control of valve procurement │ Development of valve metal material process consumption quota │ Impact of surface defects on verification and countermeasures in radiographic testing of valve castings │ Exploration and practice of computer-aided design of valve casting steel process │ Anti-corrosion nitriding of valve stems │ Valve parts processing fixtures │ Surface cleanliness of valve parts │ Valve gearbox maintenance research │ Development and application of anti-bias control steam injection valve │ Analysis of the handle position of the three-position four-way rotary valve of the blowout preventer control device │ Another discussion on the handle position of the three-position four-way reversing valve in the blowout preventer remote console │ Design and installation of a new check valve to prevent the reverse flow of transformer oil │ Design and selection of fire emergency isolation valves │ Design and research of fire dampers │ Improved design and analysis of hydraulic brake valves for explosion-proof rubber-tyred vehicles │ Simulation analysis of the impact of explosion-proof valves on the dynamic characteristics of closed systems │ Application of anti-theft check valves in rapid refueling systems for large mining vehicles │ Anti-theft valves │ Anti-corrosion vacuum pressure valves │ Calculation and selection of control valves under blocked flow conditions │ Research on the stability of hydraulic valves caused by damping settings │ Experimental study on the pressure drop characteristics of the magnetorheological valve with adjustable damping gap│ Research on reducing the damage rate of the bellows of the low-temperature stop valve│ Research on the manufacturing technology of the deaerator spray valve│ Application of ceramic coating technology in valves│ Application of ceramic ball valves in the coal chemical industry│ Application and structural design of ceramic ball valves│ Application of ceramic valves│ Characteristics of ceramic valves and their application prospects│ Compartment flat gate valve│ Design and application of integrated oil tank sampling valve │ Renovation of gas gathering station flow meter valve group venting system │ Design analysis of foot valve for container tank │ Influence of zero gap and temperature change on nozzle damper valve │ Zero leakage triple eccentric metal seal butterfly valve │ Structural design and application research of special valve for starting buffer in zero covering state │ Application of Hall elements in valve position monitoring │ Process arrangement of bronze gate T-shaped slot │ Modification and application of static vane proportional valve control system │ Quick calculation method of non-circumferential opening slide valve port area │ Non-uniformly heated liquefied petroleum gas storage tank pressure response and valve action simulation │ Analysis of technical requirements and type test standards for non-refillable bottle valves │ Development of packaging equipment control system for aerosol valves │ Design of constant pressure and constant flow water supply system for performance testing of water inlet solenoid valves │ A brief analysis of the pressure test standards and requirements for control valves on site │ Research on sequentially controlled main line breaker valves │ Shun-closing stop valves │ Application of pre-oxidation + thermal cycle body nitriding process on valves │ Finite element analysis and optimization of pre-selected valve bodies │ Optimization and improvement of pressure regulating valve structures in aircraft fuel filling systems │ Maintenance difficulties and treatment methods of terminal valves in Hong Kong │ Discussion on cold processing technology of martensitic valve steel │ Analysis and improvement of assembly failure factors of cab front suspension height valve│ Valve pressure test device for acceptance│ Development direction of high and medium pressure valve production technology and equipment technology│ Research on high-pressure three-way valve structure│ Three-dimensional flow field simulation and valve core failure analysis of high-pressure well control wedge-shaped choke valve│ Prediction and analysis of comprehensive noise level of high-pressure pilot axial flow natural gas pressure reducing valve│ Structural design and application of high-pressure pressure reducing valve│ The use and requirements of high-pressure hydrogenation unit valves │ Working condition requirements and technical analysis of high-pressure hydrogenation unit valves │ Development and application of high-pressure heater protection valves │ Experimental research on the characteristics of high-pressure double solenoid valves controlling fuel injection systems │ Application of high-pressure parallel gate valves in hydrogenation units │ Analysis and improvement of high-pressure reciprocating pump packing and pump valve faults │ Structural design of high-pressure control valves │ High-pressure check valve fracture failure analysis │ Research on materials used for valve plates of high-pressure gas compressors│ Improvement of high-pressure pressure relief valve pilots│ Gas nitriding of high-pressure mud valve valve plates and valve stems│ Research on response characteristics of high-pressure seawater pump valve distribution systems│ Research on high-pressure silencer and noise reduction ball valves│ Design of high-pressure clean water control valves│ Experimental research on electromagnetic transient characteristics of converter valve switches in high-voltage DC converter stations│ Design of verification device for high-voltage direct current transmission valve cold system flow instrumentation │ Design of high-pressure pipeline valve pressure test device │ Research and application of high-pressure automatic flow meter valve seat extractor │ Research on high-pressure throttle valve erosion mechanism │ Analysis of high-pressure throttle valve throttling characteristics and fluid-solid coupling failure analysis │ Analysis of the impact of high-pressure testing on the performance of self-tightening check valves │ New structural design of high-pressure valves 3 │ Discussion on on-site pressure testing methods of high-pressure valves │ Repair of high-pressure valves │ Process design and application of high-pressure valve castings │ Application of high-reliability valve control circuits │ Development and use of high-strength oil delivery valve covers │ Application of high-tech structural ceramic materials in large-diameter industrial valves │ Three-dimensional numerical simulation of high-head ship lock valve section body shape optimization │ Practical evaluation of high-head butterfly valves and ball valves │ Analysis of the opening pressure difference characteristics of high-concentration solid-liquid two-phase ball valves │ Development and field testing of high-temperature gel valves │ Design of high-temperature fixed ball two-way wear-resistant ball valves │ Improvement of high-temperature blending valve cores │ Development and application of high-temperature electric gate valves │ Structural design of high-temperature butterfly valves │ High temperature grade and main material of high-temperature valves Lejingjing5 │ Key technologies in high-temperature valve design │ High temperature and high pressure Y-shaped bellows stop valve │ High temperature and high pressure hydrogen facing pipeline valve cracking failure analysis │ Analysis of high temperature and high pressure hydrogen facing valve manufacturing process │ Progress and application of high temperature and high pressure small diameter stop valve │ High temperature and high pressure nuclear power gate valve fluid-solid thermal coupling analysis │ High temperature and high pressure ball valve ball thermal-structural coupling analysis │ Design and calculation of high temperature and high pressure power station flat gate valve │ High temperature and high pressure valve casting manufacturing process and application │ Application analysis of blast furnace TRT start valve control technology │ Analysis and application of excessive vibration of blast furnace pressure reducing valve group │ Treatment of blast furnace relief valve failure │ New wedge gate valve for blast furnace │ Analysis and solutions to the reasons for the automatic opening of DN550 relief valve on the top of blast furnace │ Blast furnace top relief valve │ Numerical simulation of blast furnace gas pressure reducing valve │ Cold air relief valve for blast furnace │ Disc gas relief valve for blast furnace │ Numerical simulation of energy-saving transformation of check valve of blast furnace blast system │ Analysis of balancing valve problem of aerial work vehicle │ State space modeling and digital design of high-precision pneumatic servo valve │ Analysis and improvement of high-precision hydraulic slide valve clamping problem │ Common faults and solutions in the operation of advanced orifice valves │ High-quality steam traps │ Simulation study on the performance of the relay valve used in the high-speed EMU braking system│ High-speed and large-flow two-position three-way switching solenoid valve│ Solenoid design of the high-speed switching digital valve│ Simulation study on the injection hydraulic system of the high-speed switching valve pilot control injection molding machine│ Research on the static characteristics of the typical combination control valve body of the high-speed switching valve│ Performance study of the piezoelectric driver of the high-speed switching valve│ Research on the characteristics of the high-speed switching valve controlled cartridge valve│ Experimental research on flow characteristics of high-speed on-off valves│ Research on hydraulic power compensation of high-speed on-off valves│ Research status of high-speed on-off valves│ Expansion of the effective duty cycle working range of high-frequency pulse width modulation control of high-speed on-off valves│ Research on static characteristics of high-speed electromagnetic on-off valves│ Analysis of flow field and opening and closing characteristics of pressure valves of high-speed vent valves│ Pneumatic modeling and experimental research on the opening process of high-speed vent valves│ Working principle of high-frequency electro-hydraulic servo valve and online bias adjustment │ Brass valve body hot forging process and mold │ Hydraulic model of toothed edge float valve tray

14.4 Valve (excluding stainless steel) courseware│ 091PV155 high-pressure steam pressure reducing valve operation analysis and modification ideas 22.ppt │ 091PV155 high-pressure steam pressure reducing valve operation analysis and modification ideas.ppt │ BS5351 floating ball valve basic knowledge training.ppt │ Application of C-type wear-resistant ball valve in coal gasification equipment PPT 66 │ Fisher-Valve Structure 170.ppt │ Fisher control valve structure and maintenance.ppt │ Wellhead flat valve structure.ppt │ Cryogenic valve installation precautions.pptx │ Research on cryogenic test technology of cryogenic valves 26.ppt │ Fully welded ball valve product introduction.pptx │ Agricultural valve introduction and installation manual PPT 80 │ Inspection and maintenance of ash flushing pipeline valves.ppt │ Cut-off valve.pptx │ Hydrogenation valve R&D and application information 43.ppt │ The principles and usage of commonly used valves in the chemical industry 48.ppt │ Basic knowledge of chemical valves PPT 110 │ Cameron fully welded ball valve (very detailed and easy to understand).ppt │ Pressure relief valve.ppt │ Double isolation valve 22.ppt │ Comparison of various regulating valves 58.ppt │ Introduction to various types of valves 18.ppt │ The structure and working principle of various types of valves 12.ppt │ Breathing valve setting and calculation PPT 21 │ Harbin Boiler Plant Power Station Valve Selection Manual 189 │ Introduction to dome valve 10.ppt │ Industrial valve pressure testing technology and equipment based on material properties 20.ppt │ Commonly used natural gas valve structures and maintenance 43.ppt │ Structure, operation and maintenance of throttling cut-off and vent valves commonly used in natural gas production 20.ppt │ Natural gas station equipment operation tutorial (valve) 132.ppt │ Basic knowledge and use of Baoheng HCV control valve PPT 104 │ Introduction to the basic knowledge of industrial valves 112.ppt │ Introduction to basic knowledge of industrial valves 114.ppt │ Industrial valve knowledge training courseware 110.ppt │ Training on basic knowledge of process design - settings of steam traps, pipeline filters and blind plates.ppt │ Training on basic knowledge of process design - settings of valves 45.ppt │ Working principle of differential pressure valve.ppt │ Commonly used industrial valves PPT 99 │ Commonly used industrial valves, flanges and gasket standards 101.ppt │ Common industrial valves, flanges and gasket standards 101.ppt │ Introduction to commonly used materials—valves 53.ppt │ Introduction to common materials - valves page 53.ppt │ Commonly used flanges, gaskets and valves selected PPT 60 │ Brief description of commonly used pipeline valves 21.ppt │ Brief description of commonly used pipeline valves 21 pages.ppt │ Introduction to the working principles and structures of commonly used valves and pumps.ppt │ Commonly used valve materials 13.ppt │ Structure, principle and maintenance knowledge of commonly used valves 60.ppt │ The structure, principle and maintenance knowledge of commonly used valves 60 pages.ppt │ Identification and maintenance of commonly used valves 33.ppt │ The structure, selection and maintenance of common household valves 22.ppt │ The structure, selection and maintenance of common household valves 22 pages.ppt │ Common valves and maintenance 66.ppt │ Common valves and maintenance 66 pages.ppt │ Basic knowledge of common valves PPT 71 │ Basic knowledge of common valves 71.ppt │ Basic knowledge of common valves 71 pages.ppt │ Classification and characteristics of common valves 22.ppt │ Classification and characteristics of common valves 22 pages.ppt │ Structure and principles of common valves 58.ppt │ The structure and principles of common valves 58 pages.ppt │ Common valve structures and applications PPT 63 │ Introduction to conventional valves 15 pages.pptx │ Introduction to conventional valves 1.ppt │ Introduction to conventional valves 2.pptx │ Quick unloading valve.ppt │ Scenario 2 valve maintenance 30.ppt │ Current status and development of valve standards in my country 16.ppt │ Pull off valve 33.ppt │ Full analysis of the principle and usage requirements of pull-off valves 10.ppt │ Directional valve 58.ppt │ Directional valve 44.ppt │ Basic knowledge of control valves and Fisher product overview 80.ppt │ Development and application of new hydraulic control valve.ppt │ Introduction to rotary valve 30.ppt │ Replacement of commonly used high-pressure valve packing.ppt │ Basic knowledge of flanges, gaskets and valves.ppt │ Bellows seal globe valve--Spirax Sarco basic training course.PPT │ Flow control valve 13.ppt │ Flow control valve.ppt │ Brief discussion on valve pressure test wastewater treatment methods and improving pressure test efficiency.ppt │ Development status and countermeasures and suggestions of the valve industry in Zhejiang Province 19.ppt │ Hydraulic preload sealing flat valve type automatic bottom cover machine 19.ppt │ relief valve 43.ppt │ Special gas valve training 50.ppt │ Ball valve training materials_Qiu Xiaolai 60.ppt │ Ball valve technical training materials 35.ppt │ Ball valve standard training 35.ppt │ Introduction to commonly used valves in power plants 30.ppt │ Power plant system & commonly used TYCO valves 40.ppt │ Introduction to power plant systems and commonly used valves.ppt │ Introduction to basic knowledge of steam traps ppt 84 │ Lecture on steam trap technology.ppt │ Structure and principle of steam traps PPT 23 │ Introduction to vacuum valves and water seal valves.ppt │ Petrochemical control valves 34.ppt │ Introduction to petrochemical plant valves 51.ppt │ Chapter 2 Valve Structure and Working Principle (Part 1).ppt │ Part 2 Basic Knowledge of Valves.ppt │ Research on the Fifth Generation Temperature and Pressure Reduction Device 21.ppt │ Section 4 Flow Control Valve 30.ppt │ Quality assurance of valves used in pipeline engineering 19.ppt │ Use and maintenance of pipes and valves 20.ppt │ General provisions for the installation of basic valves in pipeline engineering 62.ppt │ Piping Engineering Fundamentals - General Provisions for Valve Installation 62.ppt │ Fundamentals of Pipeline Engineering - General Provisions for Valve Installation.ppt │ Technical Key Points of Common Leakage Problems of Pipe Valve Equipment 14.ppt │ Water supply valve--Copper valve and iron valve knowledge training PPT 16 │ Development and application of back pressure multi-functional hydraulic control valve 21.ppt │ Development and application of back pressure multifunctional hydraulic control valve.ppt │ Automatic exhaust valve principle information PPT 21 │ Basic knowledge of butterfly valve PPT.ppt │ Butterfly valve installation and daily maintenance 18.ppt │ Introduction to butterfly valve.ppt │ Chaoda ball valve training material Qiu Xiaolai.ppt │ Orbital ball valve.ppt │ Introduction to orbital ball valve and control.ppt │ Soft seal gate valve.ppt │ Valve courseware for general mechanical equipment PPT 324 │ General equipment - valves 99.ppt │ Oil and gas wellhead and valve knowledge 28.ppt │ Knowledge on oil and gas wellheads and valves 28 pages.ppt │ Structural principles of valves and equipment commonly used in the gas production and transportation process 123.ppt │ Structural principles of valves and equipment commonly used in gas production and transportation processes 123 pages.ppt │ Design, manufacturing and technology of metal hard-sealed wear-resistant ball valves 39 (2).ppt │ Design, manufacturing and technology of metal hard-sealed wear-resistant ball valves 39.ppt │ Design, manufacturing and process of metal hard-sealed wear-resistant ball valve.ppt │ Needle valve 16.ppt │ Summary of new product introduction of copper valve group.ppt │ Closed loop hydraulic transmission technology 115.ppt │ Comparison of gate valve, globe valve and butterfly valve 23.ppt │ Valve sleeve type drain valve.ppt │ Valve 33.ppt │ Seminar on CE certification for valves and pressure equipment 30.ppt │ Special seminar on CE certification for valves and pressure equipment 30 pages.ppt │ Valve--API6A 17.ppt │ Valve professional knowledge training PPT 236 │ Valve introduction PPT 50 │ Valve introduction PPT 85 │ Valve introduction 19.ppt │ Typical structure and working principle of valve.ppt │ Welding technology in valve manufacturing 160 expert courseware.ppt │ Introduction to valve manufacturing process 32.ppt │ Introduction to valves and their operation 25.ppt │ Introduction to valves and pipe fittings PPT 59 │ Valve training exchange PPT 254 │ Basic knowledge of valves PPT 56 │ Basic knowledge of valves lecture PPT 62 │ Basics of valves ppt 117 pages │ Introduction to basics of valves PPT 117 │ Basic knowledge of valves 69.ppt │ Valve Basics PPT 50 │ Valve Basics PPT 55 │ Valve Basics PPT 69 │ Valve Basics 30.ppt │ Basic knowledge of valves 69 (2).ppt │ Basic knowledge of valves 69.ppt │ Valve Basics PPT 68 │ Valve Basics PPT.ppt │ Valve basic knowledge training 44.ppt │ Valve basic knowledge technical exchange PPT 62 │ Valve installation basic knowledge 70.ppt │ valve actuator 32.ppt │ Introduction to valve actuators 32.ppt │ Valve technology training handout PPT 57 │ Causes and solutions of valve failures 94.ppt │ Valve materials 18 .pptx │ Valve materials and standards 25.ppt │ Valve maintenance 30.ppt │ Valve inspection and maintenance.ppt │ Valve flow characteristic curve structure.ppt │ Introduction to the use and maintenance of valves 31.ppt │ Principle and maintenance of valves.ppt │ Common standards for valves 15.ppt │ Common faults and solutions of valves.pptx │ Types and principles of valves 24.ppt │ Types and principles of valves 80.ppt │ Types and principles of valves PPT 64 │ Types and principles of valves PPT 80 │ Types and principles of valves 20.ppt │ Types and principles of valves 29.ppt │ Types and principles of valves PPT.ppt │ Valve types and common faults 25.ppt │ Valve selection 90.ppt │ Valve selection PPT 90 │ Valve selection.ppt │ Valve selection and valve knowledge encyclopedia PPT 88 │ Valve related knowledge exchange PPT 50 │ Valve knowledge training 47.ppt │ Valve knowledge and technology exchange meeting 63.ppt │ Introduction to valve knowledge PPT 92 │ Introduction to valve knowledge PPT 92 │ Full version of introduction to valve knowledge 64.ppt │ Complete version of introduction to valve knowledge 69.ppt │ Complete version of valve knowledge introduction (Part 1) 43.ppt │ Complete version of valve knowledge introduction (Part 2) 21.ppt │ Valve Knowledge Introduction Full Version (Part 2) 29.ppt │ Valve knowledge introduction complete version PPT.ppt │ Introduction to valve knowledge (full version) 73.pptx │ Valve introduction 33.ppt │ Valve category classification PPT 39 │ Valve structure and maintenance 139.ppt │ Valve structure and working principle PPT 75 │ Valve structure and working principle diagram ppt 40 │ Valve maintenance technology 66.ppt │ Introduction to valve maintenance 38 (2).ppt │ Introduction to valve maintenance 38.ppt │ Introduction to valve maintenance 38.ppt │ Introduction to valve maintenance.ppt │ Valve surface hardening treatment 14.pptx │ Valve disassembly, maintenance and grinding 56.ppt │ Valve accessories solenoid valve positioner 30.ppt │ Transmission system of high pressure and ultra high temperature rapid reversing valve 38.ppt │ Transmission system of high pressure and ultra high temperature quick reversing valve.ppt │ High pressure valve design 43.ppt │ High-pressure valve design.ppt │ └─Drain valve 150NW-78×2 low-pressure drain pump maintenance and common fault diagnosis 18.pptx TLV trap 59.ppt Natural gas trap training 60.ppt Introduction to steam trap 171 (2).ppt Introduction to steam trap 171.ppt Process design basic knowledge training steam trap setting 18.ppt Training on basic knowledge of process design-steam trap setting 13.ppt Common trap structures and principles 15.ppt Common Trap Structures and Principles 15 pages.ppt Spirax Sarco Textbook - Principles and Applications of Traps 54.ppt Lever float trap 10.pptx Introduction to the use of steam traps in nuclear power plants 26.ppt Vapor-liquid two-phase flow automatic steam trap 6.ppt Steam turbine drainage system-drainage expansion vessel and turbine body drainage pipe 14.ppt Float Trap Handout 11.ppt Thermal Power Trap Working Principle 72.ppt Principle and selection of water traps 112.ppt Working principle of water trap 17.pptx Use of water trap 101.ppt trap 40.pptx Traps and check valves 8.ppt Trap basics 88.pptx Trap basics 89.ppt Working principle of steam trap 30.ppt Trap technology training course 104 Trap technology lecture 106.ppt Trap technology lecture 75.ppt Structure and principle of drain valve 30.pptx Selection and application of steam traps 22.pptx Traps Handout 104.ppt Trap Lecture 62.ppt Trap Lecture 72.ppt The function of air trap 22.ppt Chapter 5 Steam Heating System 40.ppt Lecture 19 Steam Heating System 39.ppt Technical management requirements for condensate recovery and steam traps in steam heating systems 45.ppt Steam heating system energy-saving technology 51.ppt Principle and introduction of steam trap 80.ppt Steam Trap Basics 72.pptx steam trap 63.ppt steam trap 46.ppt steam trap 56.ppt steam trap 61.ppt Basic lecture on steam traps and energy conservation 25.ppt How steam traps work 9.ppt Selection of steam traps 13.ppt Steam trap management.ppt Steam trap selection, installation and maintenance training courseware 52.pptx Steam system dewatering equipment 67.ppt Shaft seal steam and drainage system 22.ppt High and low hydrophobic and air exhaust system diagram 32.ppt

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