Valve **Standard Search – GB Standards

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Serial Number Valve Standard Code Name of Valve Standard 1GB12220-1989 “Marking for General Valves” 2GB12221-1989 “Structural Length of Flanged Metal Valves” 3GB12222-1989 “Connection of Actuators for Multi-turn Valves” 4GB12223-1989 “Connection of Actuators for Partial-turn Valves” 5GB12224-1989 “General Requirements for Steel Valves” 6GB12225-1989 “Technical Requirements for Copper Alloy Castings in General Valves” 7GB12226-1989 “Technical Requirements for Gray Iron Castings in General Valves” 8GB12227-1989 “Technical Requirements for Ductile Iron Castings in General Valves” 9GB12228-1989 “Technical Requirements for Carbon Steel Forgings in General Valves” 10GB12229-1989 “Technical Requirements for Carbon Steel Castings in General Valves” 11GB12231-1989 “Appearance Quality Requirements for Valve Castings” 12GB12232-1989 “Flanged Iron Gate Valves for General Valves” 13GB1047-1970 “Nominal Diameter of Pipes and Pipe Fittings” 14GB12236-1989 “Steel Swing Check Valves for General Valves” 15GB1348-1988 “Ductile Iron Castings” 16GB1048-1990 “Nominal Pressure of Pipeline Components” 17GB11365-1989 “Precision of Bevel Gears and Hypoid Gears” 18GB4213-1984 “General Technical Requirements for Pneumatic Control Valves” 19GB12238-1989 “Butterfly Valves with Flanged Wafer Connections for General Valves” 20GB8335-1987 “Threads for Gas Cylinders”