Flange Butterfly Valves Three-dimensional incline taper airproof seat 900 openinger cleaning Triple eccentric,Bereled wedgedisc small friction and torque,self-clean Manual,electric,pneumatit and gear operation etc Technical specificastionDesign StandardMSS SP 67-1997Face to FaceBS5155Flange EndsANSI B16.5Test & InspectionAPI598Part nameA216 WCBA217 LCBA351 CF8A351 CF8M

Wafer butterfly valve: Design standard: API 609& ASME B16.5 Structure Length: ASME B 16.10 Flange ends: ASME B16.5 Test & inspection: API 598 Pressure: 150lb, 300lb, Size: 2"-20" Body: Cast iron, ductile iron, A216 WCB, SS304, SS316, etc. Disc: Cast iron, ductile iron, A216WCB, SS304, SS316, etc. Seat: NBR, EPDM, PTFE, SI, etc. Stem: SS316, SS304, SS410, etc. Packing: Soft graphite, fluorine plastic.