FREE-Valves flange foot valve is a kind of energy saving valve, usually installed at the bottom of the suction pipe of pump. The functions of foot valve are designed to stop water from going backwards when the pump shuts off and only allow the water flow forward. As many inlet and stiffeners are designed on the valve bonnet, the valve is not easy to clog. The foot valve is usually applied at suction pipe. The valve disc usually designed as signal disc, and connection method is flange .