... Material: a) Body: ductile iron, cast iron, stainless steel, WCB, Al bronze or other materials you require. b ... ) Disc: ductile iron, cast iron, stainless steel, carbon steel, Al bronze or other materials you require. c) ... double flanged butterfly valve), D343(double eccentric flanged butterfly valve), Grooved end type, Double disc wafer check valve, Flapper check valve, Eccentric plug valve, Half ...