Butterfly Valve, Gate Valve, Check Valve manufacturer / supplier in China, offering China Factory OEM En593 Handwheel Double Eccentric Flanged BS5163 Connection Blue Ductile Iron Ggg50 Pn16 Gear Operated Butterfly Valve, Lever Operated Pn10 DN100 Butterfly Valve China Factory ANSI/DIN/JIS Resilient Concentric Ductile Cast Iron Industrial Wafer Lug EPDM PTFE Butterfly Valve, China Factory Carbon Steel Class 150 Gate Valve and so on.