Valve standards (GB) **Standards

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This post was last edited by kn on 2020-6-12 20:05. Valve standards are divided into mandatory **standards (GB)** and recommended **standards (GB/T)**. The **standard number of a valve** consists of the **standard code**, the **sequential number of the standard’s issuance**, and the **year in which the standard was issued**. The **standards for valves consist of two parts: one deals with the specifications for manufacturing, such as structural length and materials, while the other involves specifying the structure and dimensions of each type of valve. Users should refer to the relevant valve standards based on the type of valve they need. This standard mainly provides a brief explanation of the general standards for valves as well as the technical specification standards. Valve standard code Valve standard name Valve standard code Valve standard name GB12220-1989 “Marking for General Valves” GB12245-1989 “Test Methods for Performance of Pressure Reducers” GB12221-1989 “Structural Length of Flanged Metal Valves” GB12246-1989 “Pilot-Operated Pressure Reducers” GB12222-1989 “Connections for Multi-Turn Valve Actuators” GB12247-1989 “Classification of Steam Traps” GB12223-1989 “Connections for Partially Turn Valve Actuators” GB12248-1989 “Terms for Steam Traps” GB12224-1989 “General Requirements for Steel Valves” GB12249-1989 “Marking for Steam Traps” GB12225-1989 “Technical Requirements for Copper Alloy Castings of General Valves” GB12250-1989 “Structural Length of Steam Traps” GB12226-1989 “Technical Requirements for Gray Iron Castings of General Valves” GB12251-1989 “Test Methods for Steam Traps” GB12227-1989 “Technical Requirements for Ductile Iron Castings of General Valves” GB10868-1989 “Technical Requirements for Temperature and Pressure Reducers in Power Plants” GB12228-1989 “Technical Requirements for Carbon Steel Forged Parts of General Valves” GB10869-1989 “Technical Requirements for Control Valves in Power Plants” GB12229-1989 “Technical Requirements for Carbon Steel Castings of General Valves” GB/T1972-1992 “Butterfly Springs” GB12231-1989 “Appearance Quality Requirements for Valve Castings” GB12234-1989 “Flanged and Butt-Welded Steel Gate Valves for General Valves” GB12232-1989 “Flanged Iron Gate Valves for General Valves” GB12237-1989 “Flanged and Butt-Welded Steel Ball Valves for General Valves” GB1047-1970 “Nominal Diameter of Pipes and Pipe Fittings” GB12233-1989 “Iron Stop Valves and Lift Check Valves for General Valves” GB12236-1989 “Steel Swing Check Valves for General Valves” GB9443-1988 “Penetrant Testing of Cast Steel Parts and Rating Method for Defect Indications” GB1348-1988 “Ductile Iron Parts” GB3323-1987 “Radiographic Inspection and Quality Grading of Welded Joints in Steel” GB1048-1990 “Nominal Pressure of Pipeline Components” GB12235-1989 “Flanged Steel Stop Valves and Lift Check Valves for General Valves” GB11365-1989 “Precision of Bevel Gears and Hypoid Gears” GB1851-1984 “Marine PN160 External Threaded Bronze Air Stop Valves” GB4213-1984 “General Technical Requirements for Pneumatic Control Valves” GB8464-1987 “General Requirements for Internal Threaded Gate Valves, Stop Valves, Ball Valves, and Check Valves” GB12238-1989 “Flanged Wafer-Type Butterfly Valves for General Valves” GB8465.1～7-87 “Dimensions of Internal Threaded Gate Valves, Stop Valves, Ball Valves, and Check Valves” GB8335-1987 “Threads for Gas Cylinders” GB5677-1985 “Radiographic Inspection of Cast Steel Parts and Classification Method for Film Grades” GB10877-1989 “Oxygen Cylinder Valves” GB12230-1989 “Technical Requirements for Austenitic Steel Castings of General Valves” GB12239-1989 “Diaphragm Valves for General Valves” GB1804-1979 “Tolerances and Fits – Limit Deviations for Dimensions Without Specified Tolerances” GB12240-1989 “Iron Plug Valves for General Valves” GB12244-1989 “Radiographic Inspection of Cast Steel Parts and Classification Method for Film Grades” GB12241-1989 “General Requirements for Safety Valves” GB10879-1989 “Valves for Acetylene Cylinders” GB12242-1989 “Test Methods for Performance of Safety Valves” GB197-1981 “Plain Threads, Tolerances and Fits” GB12243-1989 “Safety Valves with Direct Spring Load” GB1239.2-1989 “Technical Requirements for Cold-rolled Cylindrical Helical Compression Springs” GB11352-1989 “Technical Requirements for Cast Steel Parts” GB1239.4-1989 “Technical Requirements for Hot-rolled Cylindrical Helical Springs” GB596—83 “Marine External Threaded Bronze Stop and Check Valves” GB10095-1986 “Precision of Involute Cylindrical Gears” GB597-1983 “Marine External Threaded Bronze Check Valves” GB9444-1988 “Magnetic Particle Testing of Cast Steel Parts and Quality Grading Method” GB5796-1986 “Trapezoidal Threads” GB/T13927-1992 “Pressure Testing for General Valves” GB7306-1987 “Pipe Threads Sealed by Threads” GB/T592-1993 “Marine Flanged Cast Iron Check Valves” GB7307-1987 “Pipe Threads Not Sealed by Threads” GB/T1852-1993 “Marine Flanged Steel Steam Pressure Reducers” GB6414-1986 “Dimensional Tolerances for Castings” GB/T12252-1989 “Supply Requirements for General Valves”