Butterfly Valve, Flange Adaptor, Dismantling Joint manufacturer / supplier in China, offering Pn16 Ductile Iron Wafer Butterfly Valve with Al Brz Disc, DIN3202-K4 Stainless Steel Industrial Water Wafer Type Spring Swing Check Valve Pn16/25/40 Non Return Valve Stop Valve for Industrial Control, Pn25 Lug Type Valves Offer Higher Working Pressure up to 2.5MPa and so on.