... :body-DI,WCB,Stainless Steel disc-D Double Flange Butterfly Valve:SizeDN40 - DN1200Design StandardAPI 609End flangeEN1092 ,ANSI 125/150# ,DIN2501Face to ... control actrators.Products;We can produce butterfly valves, check valves, gate valves and so on with the materials of ductile iron ... manufactured in accordance with the standards of GB, ASME, ANSI, API, BS, DIN Double flange DN1200 Butterfly valve