Butterfly Valve, Flange Adaptor, Dismantling Joint manufacturer / supplier in China, offering Pn10/Pn16 Lug Type Butterfly Valve with Rubber Seated, DN1000 Ductile Iron Flanged Double Eccentric /Offset Butterfly Valve Pn16 Butterfly Valve Gear/Handwheel Butterfly Valve Ggg50 Butterfly Valve, High Quality Product Rubber Expansion Joints and so on.