1) Standards: 
a) Design&Manufacture:API 600,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