Size:1/2''-12'' Pressure: Class150LB-1500LB Material: A105,LF2,F304,F316,F304L,F316L,MONEL,ALLOY 20 Design & Manufacture Std.: BS 1873 and ASME.B16.34 inspection and Test:API 598. End flange dimnsion:ASME.16.25 Socket End: ASME B16.11 Test Standard: API598 Operated way: Lever, Pneumatic, Electric API 6D,CE,ISO9001