International standards for control valves

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International standards for control valves include the American Petroleum Institute (API) specification 6D (1994), which pertains to pipeline valves (gate, plug, ball, and check valves); specification 598 (1996) for pipeline valves; specification 607 (1993) for valve inspection and testing; specification 609 (1997) for fire testing of soft-seated rotary valves. The American Society of Mechanical Engineers (ASME) standards include B16.1–1989 for lug-type and wafer-type butterfly valves; B16.4–1994 for cast iron pipe flanges and flanged fittings; B16.5–1996 for gray iron threaded fittings; B16.10–1992 for face-to-face and end-to-end dimensions of valves (see ISA standards regarding the dimensions of most control valves); B16.24–1991 for copper alloy pipe flanges and flanged fittings; B16.25–1997 for butt-weld ends; B16.34–1996 for valve flanged, threaded, and welded ends; B16.42–1987 for ductile iron pipe flanges and flanged fittings; B16.47–1996 for larger-diameter steel flanges (NPS26 to NPS60).

The European Committee for Standardization (CEN) has established several standards for industrial valves: EN19 (December 1992) for general requirements; EN558-1 (October 1995) for face-to-face and centerline-to-face dimensions of metal valves used in flanged piping systems – Part 1: Valves with PN designations; EN558-2 (March 1995) for face-to-face and centerline-to-face dimensions of metal valves used in flanged piping systems – Part 2: Valves with ANSI designations; EN593 for butterfly valves (approved but date not yet determined); EN736-1 (June 1995) for terminology – Part 1: Definitions of valve types; EN736-2 (November 1997) for terminology – Part 2: Definitions of valve components; EN736-3 for terminology – Part 3: Definition of terms (currently under development); EN1349 for industrial process control valves (under development); EN1503-1 for shell materials – Part 1: Steel (under development); EN1503-2 for shell materials – Part 2: ISO steels (under development); EN1503-3 for shell materials – Part 3: Cast iron (under development); EN1503-4 for shell materials – Part 4: Copper alloys (under development); EN12266-1 for valve testing – Part 1: Tests, test procedures, and acceptance criteria (under development); EN12516-1 for shell design strength – Part 1: Graphical method for steel valves (under development); EN12516-2 for shell design strength – Part 2: Calculation method for steel valves (under development); EN12516-3 for shell design strength – Part 3: Experimental method (under development); EN12627 for butt-weld end design (under development); EN12760 for socket-weld end design (under development); EN12982 for end-to-end dimensions of valves with butt-weld ends (under development).

EN60534-1 (June 1993) is Part 1: Terminology and general considerations related to control valves. EN60534-2-1 (June 1993) is Part 2: Flow capacity – Section 1: Formulas for calculating valve sizes for incompressible fluids under installed conditions. EN60534-2-2 (June 1993) is Part 2: Flow capacity – Section 2: Formulas for calculating valve sizes for compressible fluids under installed conditions. EN60534-2-3 (June 1993) is Part 2: Flow capacity – Section 3: Test procedures. EN60534-8-2 (June 1993) is Part 8: Considerations regarding noise – Section 2: Laboratory measurement of noise generated by liquid flow through control valves. EN60534-8-3 (February 1996) is Part 8: Considerations regarding noise – Section 3: Methods for predicting aerodynamic noise generated by control valves. EN60534-8-4 (August 1994) is Part 8: Considerations regarding noise – Section 4: Prediction of noise generated by hydrodynamic flow.

European material standards include EN10213-1 (February 1996) for technical delivery conditions of steel castings for pressure purposes – Part 1: General overview; EN10213-2 (February 1996) for technical delivery conditions of steel castings for pressure purposes – Part 2: Steel grades for use at room and elevated temperatures; EN10213-3 (February 1996) for technical delivery conditions of steel castings for pressure purposes – Part 3: Steel grades for use at low temperatures; EN10213-4 (February 1996) for technical delivery conditions of steel castings for pressure purposes – Part 4: Austenitic and austenitic-ferritic steel grades. EN10222-1 pertains to technical delivery conditions of steel forgings for pressure purposes – Part 1: General overview (under development); EN10222-2 pertains to technical delivery conditions of steel forgings for pressure purposes – Part 2: Ferritic and martensitic steels for use at elevated temperatures (under development); EN10222-3 pertains to technical delivery conditions of steel forgings for pressure purposes – Part 3: Nickel steels for use at elevated temperatures (under development); EN10222-4 pertains to technical delivery conditions of steel forgings for pressure purposes – Part 4: Fine-grain steels (under development); EN10222-5 pertains to technical delivery conditions of steel forgings for pressure purposes – Part 5: Austenitic, martensitic, and austenitic-ferritic stainless steels (under development).

European flange standards include EN1092-1, Part 1: Steel flanges with PN designations (under development); EN1092-1, Part 1: Cast iron flanges with PN designations; EN1759-1, Part 1: Grade designations for steel flanges (under development).

Fluid Control Institute (FCI) standard 70-2-1991 deals with seat leakage in control valves. The International Society of Automation (ISA) standards include S51.1–1976 (revised in 1993) for terminology related to process instrumentation; S75.01–1985 (revised in 1995) for formulas used to calculate flow rates through control valves; S75.03–1992 for face-to-face dimensions of straight-through control valve bodies with flanged connections (ANSI 125, 150, 250, 300, and 600); S75.04–1995 for face-to-face dimensions of control valves without flanges (ANSI 150, 300, and 600); S75.05–1983 for terminology; S75.07–1987 for laboratory measurement of aerodynamic noise generated by control valves; S75.08–1985 for face-to-face dimensions of flanged, lug-type, or clamped valves; S75.11–1985 (revised in 1991) for inherent flow characteristics and adjustable ratios of control valves; S75.12–1993 for face-to-face dimensions of straight-through control valve bodies with socket-weld and threaded connections (ANSI 150, 300, 600, 900, 1500, and 2500); S75.13–1996 for methods of evaluating positioner performance using analog input signals; S75.14–1993 for face-to-face dimensions of straight-through control valve bodies with butt-weld connections (ANSI 4500); S75.15–1993 for face-to-face dimensions of straight-through control valve bodies with butt-weld connections (ANSI 150, 300, 600, 900, 1500, and 2500); S75.16–1993 for face-to-face dimensions of straight-through control valve bodies with flanged connections (ANSI 900, 1500, and 2500); S75.17–1991 for prediction of aerodynamic noise generated by control valves; S75.19–1995 for static liquid testing of control valves; S75.20–1991 for face-to-face dimensions of straight-through control valve bodies with detachable flanged connections (ANSI 150, 300, and 600); S75.22–1992 for face-to-face dimensions of angle-type control valve bodies with flanged connections (ANSI 150, 300, and 600); S75.23–1995 for considerations related to evaluating cavitation in control valves.

The International Electrotechnical Commission (IEC) has established 15 international standards pertaining to control valves; several of these are based on ISA standards. IEC encourages **level committees to adopt these standards and abandon any corresponding ** standards. IEC standards are being increasingly used by manufacturers and peers. Below is a series of IEC industrial-process control valve standards (60534 series). 60534‑1 (1987), Part 1: Terms and general considerations for control valves; 60534‑2 (1978), Part 2: Flow capacity – Section 1: Formulas for calculating the valve orifice diameter for incompressible liquids under installed conditions (based on ISAS 75.01). 60534‑2‑2 (1980), Part 2: Flow Capacity – Section 2: Formulas for calculating the valve port diameter of compressible liquids under installation conditions (based on ISAS75.01) 60534‑2‑3 (1997), Part 2: Flow Capacity – Section 3: Testing procedures (based on ISAS75.02) 60534‑2‑4 (1989), Part 2: Flow Capacity – Section 4: Inherent flow characteristics and adjustability (not based on ISAS75.01) 60534‑3 (1976), Part 3: Dimensions – Section 1: End-to-end distances for flanged ends, two-way, and straight-through control valves (based on ISAS75.03) 60534‑3‑2 (1984), Part 3: Dimensions – Section 2: End-to-end distances for flangeless control valves except for wafer-type butterfly valves (same as ISAS75.04) 60534‑4 (1982), Part 4: Inspection and routine testing (including Amendment 1, 1986) 60534‑5 (1982), Part 5: Marking 60534‑6‑1 (1997), Part 6: Installation details for connecting positioners to control valve actuators – Section 1: Installing positioners on linear actuators. 60534－6－2 (1997), Part 6: Installation details for connecting the positioner to the control valve actuator – Section 2: Installing the positioner on rotary actuators (in preparation). 60534‑7 (1986), Part 7: Data sheet for control valves; 60534‑8‑1 (1986), Part 8: Considerations regarding noise – Section 1: Laboratory measurements of the noise generated by the gas flow rate through control valves (based on ISAS 75.07); 60534‑8‑2 (1991), Part 8: Considerations regarding noise – Section 2: Laboratory measurements of the noise generated by the liquid flow rate through control valves. 60534‑8‑3 (1995), Part 8: Considerations regarding noise – Section 3: Method for estimating the aerodynamic noise of control valves (based on ISAS75.17); 60534‑8‑4 (1994), Part 8: Considerations regarding noise – Section 4: Method for estimating the noise generated by hydrodynamic flow (based on ISAS75.17). International Organization for Standardization (ISO) 5752 (1982), Metal valves for use in flanged piping systems – Clearances between faces and between centerlines and faces. 7005‑1 (1992), Metal flanges – Part 1: Steel flanges; 7005‑2 (1988), Metal flanges – Part 2: Cast iron flanges; 7005‑3 (1988), Metal flanges – Part 3: Copper alloy and composite flanges. Manufacturers’ Standards Association (MSS) SP‑6‑1996, Standard surface finish for the contact surfaces of pipe flanges as well as flanges at the connections of valves and fittings; SP‑25‑1993, Standard marking system for valves, fittings, flanges, and connectors; SP‑44‑1996, Steel pipe flanges; SP‑67‑1995, Butterfly valves; SP‑68‑1997, High-pressure butterfly valves with compensating mechanisms. International NACE MR0175‑97, Standard material requirements – Materials resistant to sulfide stress cracking for use in oilfield equipment. Canadian Standards Association (CSA) standard C22.1‑1994, Canadian Electrical Code (CEC) C22.2‑NO, 94‑M91, Enclosures for special industrial use. European Committee for Electrotechnical Standardization (CENELEC) standard EN50014‑1993, Electrical apparatus for use in potentially explosive atmospheres – General requirements. American Institute of Steam Generators (ISA) standard S12.1‑1991, Definitions and information related to electrical instruments used in hazardous (classified) areas. International Electrotechnical Commission (IEC) standard 60079‑4 (1975), Electrical apparatus for use in explosive gas atmospheres. Part 4: Test methods for ignition temperature 60529 (1980); Degree of protection provided by enclosures (IP code). NEMA Standard 250–1991, Enclosures for electrical equipment (up to 1000 volts). NFPA Standard 70–1996, Electrical Code (NEC) 497M–1991; Classification of gases, vapors, and dusts for electrical equipment used in hazardous (classified) locations. If any information is missing, please continue to add it, fellow sailors