China Eccentrically Disc Flanged Type Carbon Steel / Ductile Iron Body 40 Inch DN1000 Butterfly Valves of Series 13 / 14, Find details about China Pn16 Butterfly Valve, U Type Butterfly Valve from Eccentrically Disc Flanged Type Carbon Steel / Ductile Iron Body 40 Inch DN1000 Butterfly Valves of Series 13 / 14