Two position three way valve permits them to be used for two completely different flow patterns

Two position three way valve are used to divert flow in process piping systems.  The valves incorporate a unique design that permits them to be used for two completely different flow patterns. Valves can be installed so that the bottom port is the common or inlet port.  The flow can be diverted 180 degrees, left or right, with a center off position. The simplest directional control valve is the 2-way valve. 2 way pneumatic valve stops flow or allows flow. A water faucet is a good example of a 2-way valve. A water faucet allows flow or stops flow by manual control.