... :body-DI,WCB,Stainless Steel disc-D Double Flange Butterfly Valve:SizeDN40 - DN1200Design StandardAPI 609End flangeEN1092 ,ANSI 125/150# ,DIN2501Face to ... valves, gate valves and so on with the materials of ductile iron, carbon steel, stainless steel to order. Our products are designed ... with the standards of GB, ASME, ANSI, API, BS, DIN Ductile iron Butterfly valve