... )Materials:body-DI,WCB,Stainless Steel disc-D Double Flange Butterfly Valve:SizeDN40 - DN1400Design StandardAPI 609End flangeEN1092 ,ANSI 125/150# ,DIN2501Face to ... handles(dn50~300), gear operators, electric and pneumatic control actrators.Products;We can produce butterfly valves, check valves, gate valves and so ... the standards of GB, ASME, ANSI, API, BS, DIN DN600 Butterfly valve