Stainless Steel Gate Valve: 
1)Standards: 
A)Design&Manufacture: API 600, API 6D, BS 1414, ASME B16.34 
B)Face to Face: API 6D, ASME B16.10, DIN 3202, BS2080 
C)Connection End: ASME B16.5, ASME B16.25 
D)Test: ISO5208, API 600, BS 6755 

2)Sizes: 1/2" - 36" or DN12 - DN900 
3)Pressure Rating: Class150 - Class1500 or PN16 - PN250 
4)Material: WCB, LCB, WC6, WC9, C12, C5, CF8, CF3, CF3M, CF8M, etc. 
5)Operated by: Handwheel, Gear, Pneumatic, hydraulic and Electric actuator.