A foot valve is basically a check valve fitted to the end of a suction pipe leading to a pump. Its purpose is to keep fluid trapped in the suction pipe when the pump stops, thus maintaining a suitable prime for the pump. When the pump restarts, the suction created opens the valve, giving full flow to the pump inlet. It may be of a simple flap-type, or more usually lift-check or ball-check valves. They are commonly combined with an integral strainer.

Four way ball valve is a spherical type of valve. It is operable to as many as four positions. It can be installed on a railway car in place of the branch pipe tee to eliminate the need for an angle cock at each end of the brake pipe and a brake control valve cut-out cock. The ball valve is functionally analogous to a rotary valve in cutting off the brake pipe at either end of the car without interrupting the brake control valve connection with the brake pipe, or in cutting out the brake control valve while establishing brake pipe continuity through the train.

Fuel check valve is used to prevent fuel leakage from vehicle. The valve is connected in the fuel vapor line between canisters and overfills limiter. It contains two balls. Under normal conditions, the gasoline vapor passage in the valve is open. When vehicle roll over occurs, one of the balls closes the fuel passage thus preventing fuel leaks.

Full Port Ball Valve has an oversized ball so that the hole in the ball is the same size as the pipeline resulting in lower friction loss. Flow is unrestricted, but the valve is larger. Full Port Ball Valves with Teflon seats and seals, carbon steel body and stainless steel ball and stem are recommended. Full port ball valves are ideal for component isolation. In their fully opened position, they create very little flow interference or pressure drop.