Design standard: ASME B16.34/ API 608Face to face: ASME B16.10Flanged end connection: ASME B16.5Butt welding end connection: ASME B16.25Wall thickness: ASME B16.34Fire safe test: API 607/API 6FAInspection and test: API 598Pressure and temperature rating: ASME B16.34Product scope: NPS 1/2″~NPS 8″, CL150~CL600Body material: WCB, LCB, WCC, CF8, CF8M, CF3, C3M, A890, 4A, A105, LF2, F304, F316, F304L, F316L etc.Seat material: PTFE､RPTFE､NYLON､DEVLON､Derlin､PEEK､PPL or metal hard seal etc.Operator: Handle, Worm Wheel, Electric, Pneumatic etc.Application:On shore Oil & GasOff shore Oil & GasRefinery/ Chemical /Petrochemical