Butterfly Valve, Check Valve manufacturer / supplier in China, offering ISO5752 Industrial Control Full EPDM Rubber Coated Lining Water Gas Duo Dual Plate Double Door Wafer Type Butterfly Check Valves From Tianjin Worlds Valve China, Stainless Steel CF8/CF8m Cast Ductile Iron Wafer Type Duplex Butterfly Double Door Disc Dual Plate/Flap/ Swing Check Valve Pn10/Pn16 or 10K/16K Class150 150lb, En593 Double Flange Butterfly Valve FF/RF Flange Series 13 and so on.