Single Acting Pneumatic Actuator is a control device based on a compressed air drive and automatically reset by a built-in spring. It is mainly composed of a cylinder, piston, spring, piston rod, and seal. When working, the piston is pushed unidirectionally by air pressure, and the actuator is reset and closed by spring force after the air is cut off.

Advantage

Reset safety
In dangerous conditions of conveying flammable gas or liquid, the built-in high-performance spring system of an acting Pneumatic Actuator provides an automatic reset function. Once the air source is interrupted, the valve can be closed immediately, thus effectively avoiding safety accidents caused by air source failure.

Stable output
The Single Acting Pneumatic Actuator adopts a precision gear meshing structure and symmetrical double rack piston design to ensure smooth and balanced output torque within the working pressure range of 2.5 bar to 8 bar.

Flexible adjustment
The Single Acting Pneumatic Actuator supports rotation angle adjustment from 0° to 90°. The double external limit bolts can achieve fine adjustment of ±5° respectively, which can meet the switch position requirements of different types of valves and improve the accuracy and reliability of valve positioning.

Long service life
All key moving parts are made of low-friction composite materials and pre-greased with grease, which can maintain stable operation in an environment of -20℃ to +80℃. Under normal working conditions, the service life of the Single Acting Pneumatic Actuator exceeds 1 million times.

Specification

Air pressure	2.5bar~8bar
Rotation angle	0° to 90°. Adjustable +5° to -5°
Type	Single acting (spring return)
Ambient temperature	-20 ~ +80° C
Optional accessories	Air regulator, Solenoid valve, Limit switch box
Surface material	Hard anodized
Lubrication	All the moving parts are coated with lubricants, extending service life

Operation

Air to port A forces the pistons outward, causing the springs to compress. The pinion turns counterclockwise while air is being exhausted from port B.

Loss of air pressure on port A, the stored energy in the springs forces the pistons inwards. The pinion turns clockwise while air is being exhausted from port A.

Air to port A forces the pistons outward, causing the springs to compress. The pinion turns counterclockwise while air is being exhausted from port B.

Loss of air pressure on port A. The stored energy in the springs forces the pistons inwards. The pinion turns clockwise while air is being exhausted from port A.