... of valve : cast iron/ductile iron/wcb Disc of valve : Ni coated ductile iron, Nylon coated ductile iron,SS304,SS316, aluminum ... EPDM, wear-resistant EPDM,NBR,PTFE,Viton Handle of valve : iron, punching malleable iron, aluminum handle Normal Diameter of valve: DN40-600 Normal ... drive, electric drive. Part name Material Body Cast iron, nodular cast iron, cast steel, alloy steel, stainless steel Disc Ball ...