Size: NPS1/2" - 2" Pressure: Class 150-1500lbs Material: A105;LF2L;F5;F11;F22;304(L);316(L);F347;F321;F91;Monel;20 Alloy. Design & Manufacture Std.: API 6D,ASME B16.34 Face to Face Std.: As Per Manufacturer's Standard End Connection Std.: ASME B16.5???? Test Standard: API598;GB/T13927;JB/T9092 Structure Type: With Bypass Pattern, without Bypass Pattern Operated Way: Lever, Gear, Pneumatic, Electric