The functional form of pneumatic actuator actuator!

The functional form of pneumatic actuator actuator!
There are mainly two forms of action, namely dual action and single action.
Double acting pneumatic actuator, under the action of compressed air, the piston will move in two directions. When compressed air enters from one end, the piston will move towards the other end; On the contrary, when compressed air enters from the other end, the piston moves in the opposite direction.
Single acting pneumatic actuators are different and usually remain in an initial position under the action of a spring. When compressed air enters, it overcomes the spring force to move the piston; When the compressed air disappears, the spring will push the piston back to its initial position.
The dual acting actuator has a high output force and is suitable for situations that require significant thrust and frequent movements; Single acting actuators are used in situations where a fail safe position or low thrust requirements are required.