Butterfly Valve, Check Valve manufacturer / supplier in China, offering Pn6 Pn10 Pn16 Split Body Full PTFE PFA Lined Wafer Type Butterfly Valve for Sea Water, Resilient Seated Cast Iron Ductile Iron Ggg40 Ggg50 Handle Wafer Butterfly Valve Without Pin, Automatic Motor Electric Actuator Wafer Butterfly Valve with Pin and so on.