Butterfly Valve, Flange Adaptor, Dismantling Joint manufacturer / supplier in China, offering High Quality DIN3202-K4 Stainless Steel Industrial Water Wafer Type Spring Swing Check Valve, Stainless Steel / Ductile Iron Wafer Dual Plate Butterfly Check Valve, API/DIN/ANSI Full EPDM NBR Rubber Lining Stainless Steel Bronze Brass Body Non Return Duo Wafer Lugged Double Flanged Dual-Plate Check Gate Butterfly Valve and so on.