Butterfly Valve, Check Valve, Gate Valve manufacturer / supplier in China, offering Ductile Iron 12′′ Ss420 Stem Di+EPDM Disc EPDM Soft-Sealed Gear Operated Wafer Type Butterfly Valve with OEM Service, Ductile Iron 14′′ Ss420 Stem Di+EPDM Disc EPDM Soft-Sealed Gear Operated Wafer Type Butterfly Valve with OEM Service, Ductile Iron 16′′ Ss420 Stem Di+EPDM Disc EPDM Soft-Sealed Gear Operated Wafer Type Butterfly Valve with OEM Service and so on.