How does a pneumatic valve work?

How does a pneumatic valve work?

Pneumatic directional valves generally have several methods, but the most commonly used ones are pilot-operated directional valves, such as solenoid valves. Valve, after the electromagnet is energized, it first ventilates the pilot head, and the pneumatic piston in the pilot head moves to push the valve core to reverse direction. After the power is also lost, the pilot piston exhausts, and the piston on the other side pushes the valve core to reverse direction. These are the two Principle of five-way solenoid directional valve.