Butterfly Valve, Flange Adaptor, Dismantling Joint manufacturer / supplier in China, offering Full Rubber NBR EPDM FPM FKM Lining Wafer Dual Plate Butterfly Check Valve, Wafer Dual Plate Butterfly Check Valve with CE ISO Wras Approved, ISO5752 En558 API594 Double Disc Dual Plate/Flap/Butterfly Wafer Check Valve with CE ISO Approved and so on.