... : 1" to 24" Body: Cast iron,Ductil iron,Carbon steel,S.S304,S.S316Disc : Ductil iron,S.S304,S.S316 Casting Iron Water Butterfly Valve:1,30years focus ... iron,Ductil iron,Carbon steel,S.S304,S.S316Disc : Ductil iron,S.S304,S.S316,Ni-painted Ductil iron,Nylon coated Ductile iron,Aluminum,Brozenand Monel.Shaft : S.S416,S.S316,S ...