Double Flange Butterfly Valve:1)Size: DN50 - DN14002)Pressure: PN1. ... Materials:body-DI,WCB,Stainless Steel disc-D Double Flange Butterfly Valve:SizeDN40 - DN1400Design StandardAPI 609End flangeEN1092 ,ANSI 125/150 ... ~300), gear operators, electric and pneumatic control actrators.Products;We can produce butterfly valves, check valves, gate valves and ... GB, ASME, ANSI, API, BS, DIN DN600 Butterfly valve