Pneumatic control systems can be designed in the form of
pneumatic circuits.
A pneumatic circuit is formed by various pneumatic components, such as cylinders, directional control valves, flow control valves, pressure regulator, signal processing elements such as shuttle valve, two pressure valve etc.
Pneumatic circuits have the following functions
To control the entry and exit of compressed air in the cylinders.
To use one valve to control another valve
To control actuators or any other pneumatic devices
Methods of controlling Pneumatic Cylinders
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