... Flange Butterfly Valve:1)Size: DN50 - DN14002)Pressure: PN1.0/1.6 MPa3)Materials:body-DI,WCB,Stainless Steel disc-D Double Flange Butterfly Valve ... °COperator:Suitalbe for handles(dn50~300), gear operators, electric and pneumatic control actrators.Products;We can produce butterfly valves, check valves, gate ... with the standards of GB, ASME, ANSI, API, BS, DIN DN600 Butterfly valve