We are leading manufacturer and exporter of Flap Valves Manufacturers, Flap Valve, Flap Valve Manufacturer, Manufacturer and exporter of Flap Valve, Flap Valve Manufacturer In india.We are Offering Flap Valves, Bolt cover,structure of flip-chip balance able pressure and light onoff operation.An oil grove is set between valve body and seal surface,which may infuse the seal grease to increase the seal capability.