Butterfly Valve, Gate Valve, Check Valve manufacturer / supplier in China, offering Corrosion Resistance Pn16 Manual Stainless Steel PTFE Wafer Butterfly Valve, 6′′ Cast Iron Body NBR Seat Manual Wafer Butterfly Valve Without Pin Pn1016, High Quality Cast Iron Grooved End Butterfly Valve with Hand Wheel or Hand Lever and so on.