• Pneumatics Principles • FRL • Valves • Cylinders • Circuitry • Help •

 

Pneumatic valves are devices that permit control of the flow of compressed air. Valves have two common features, a passageway through which air can flow and some movable parts that open and close the passageway.

Valves are used for the following reasons:

1. To control the direction of flow;
2. To control the volume of flow; and
3. To control or regulate the pressure in the system.