... .6 MPa3)Materials:body-DI,WCB,Stainless Steel disc-D Double Flange Butterfly Valve:SizeDN40 - DN1400Design StandardAPI 609End flangeEN1092 ,ANSI 125/150# ,DIN2501Face to ... operators, electric and pneumatic control actrators.Products;We can produce butterfly valves, check valves, gate valves and so on with the ... with the standards of GB, ASME, ANSI, API, BS, DIN Double flange Butterfly valve