At present, the valve manufacturer generally uses a uniform numbering method; can not use a uniform numbering method, the production plant according to their own circumstances to develop a numbering method. However, in general, the preparation of the manufacturer must be prepared in the case of the national valve standard. China Valve Standard Name GB12232-2005 General valve Flanged iron gate valve GB12233-89 General valve Iron stop valve and lift check valve GB / T12234-2007 Oil and gas industry with steel stud valve gate valve GB / T12235-2007 Petroleum, petrochemical and related industrial steel globe valve and lifting check valve GB / T12236-2008 Petroleum, chemical and related industrial use Swing check valve GB / T12237-2007 Petroleum, petrochemical And related industrial steel ball valve GB12238-89 universal valve flange and the butterfly valve connected to the folder GB12239-89 universal valve diaphragm valve GB12240-89 universal valve iron plug valve GB12241-2005 safety valve general requirements GB12242-2005 pressure relief device performance Test Specification GB / T12243-2005 Spring loaded direct safety valve GB12244-89 General requirements for pressure reducing valves GB12245-89 Performance test methods for pressure reducing valves GB12246-89 Pilot operated pressure reducing valves GB12247-89 Classification of steam traps GB12248-89 Steam hydrophobic Valve terminology GB12249-89 steam traps GB12250-2005 steam traps terminology, signs, structure length GB12251-2005 steam traps GB / T13932-1992 common valve Iron Swing Check Valve GB / T15185-1994 iron and copper ball valve GB / T21385-2008 Metal Sealed Ball Valve JB / T8527-1997 Metal Seated Butterfly Valve JB / T5298-1991 pipeline steel plate gate valve JB / T5299- 1991 General Purpose Valve Liquid Butterfly Check Valve JB3328-83 Cylinder Valve and Line Valve JB / T6441-92 Compressor Safety Valve