3 and 4 Way Controls
Description3-WAY CONTROL
A three-way valve is normally used to control larger flows; it has an inlet port, an exhaust port, and a common cylinder port.
4-WAY CONTROL
A four-way valve has an inlet port (1), two cylinder ports (2 and 4), and two exhaust ports (3 and 5). They are generally used to control double-acting actuators.