Butterfly Valve, Flange Adaptor, Dismantling Joint manufacturer / supplier in China, offering DN1000 Ductile Iron Flanged Double Eccentric /Offset Butterfly Valve Pn16 Butterfly Valve Gear/Handwheel Butterfly Valve Ggg50 Butterfly Valve, Double Offset Butterfly Valve Internal Disc-to-Stem Connection, Double Eccentric Flange Butterfly Valve with High Quality Ductile Iron and so on.