Small spring return pneumatic rotary actuator
  • Small spring return pneumatic rotary actuatorSmall spring return pneumatic rotary actuator

Small spring return pneumatic rotary actuator

AOX-P series small spring return pneumatic rotary actuator are specifically designed to quarter turn ball, butterfly, plug valves and dampers for complete valve automation solutions.AOX, founded in 1997, is a leading manufacturer of small spring return pneumatic rotary actuator in China. We provide the best quality products with high technology, high performance and satisfactory service.We have durable, dependable, and powerful actuators with several standard features and special options.

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Product Description


Fully compliance with all the latest international standards
Extensive products range allows best versatility at lower price
Innovations and patented solutions for a universal drive shaft
Multifunction position indicator
Openrating temperature:Standard:-20°C +80°C
Lowtemperature: -40°C + 80°C
High temperature:-20°C + 150°C
Travel adjustment:Have adjustment range of ±4° for the rotation at 90°
Application:Either indoor or outdoor
Highest pressure:The maximum input pressure is 8 Bar
• Different Square reductions suitable for drive shaft
• Centering rings for all sizes
• Brackets
• Couplings
• Solenoid valves

1. Rack & Pinion design.
The Rack & pinion and the two pistons are designed in symmetric structure to perform stably and rapidly with high accuracy and high power output.
2. Travel Stops.
The two sole adjusting screws at the side surface of the AOX-P series small spring return pneumatic rotary actuator which has been already installed on the valve could make the adjustment of location of the valve opening and closing more convenient and accurate. 
3. Bottom mounting standard
The pontes of AOX-P series small spring return pneumatic rotary actuator are built in according to latest version of ISO5211,DIN3337(F03-F25) to guarantee the interchangeability and versatility of the products.
4. High precision teeth on piston racks and pinion shaft for accurate positioning, low backlash, and maximum engagement resulting in overall efficient operation.

Bill of Materials

Performance Data (Single Acting)

Operation Mechanism (Single Acting)

The air source pressure comes into the body of AOX-P series small spring return pneumatic rotary actuator between the two pistons from air entrance (2) and pushes the pistons toward the end of the cylinder body while the springs at each ends inside the cylinder body is forced to shrink with the air between the pistons and the ends of the cylinder body released from air entrance (4).in the meantime, the racks of pistons drive the output shaft (gear wheel) simultaneously to rotate anticlockwise. After the direction of the air source pressure is reversed by the solenoid valve, the springs at each end begin to reset and the pistons are forced toward each other by the elasticity with the air between two pistons released from air entrance (2). Meanwhile the output shaft (gear wheel) would be driven by the racks of the pistons simultaneously to rotate clockwise. (if the pistons are assembled in different direction from each other, the output shaft would turn out to rotate in inverse direction when the springs reset, namely the single acting reverse SO type)

Our Advantages

1. We have a complete product quality inspection system to ensure that our AOX-P series small spring return pneumatic rotary actuator meet the requirements at every manufacturing stage.

2. We have a provincial R & D testing center, advanced testing equipment can carry out various tests on parts and finished products.
3. Fast delivery, accept small orders for AOX-P series small spring return pneumatic rotary actuator, order response quickly, simple operation process, focus on timeliness, can be quickly shipped through UPS, DHL, TNT, customers can also choose to ship by sea, air and other methods.


We are always ready for providing the sample and producing some small orders, in order to meet the business well. We are always ready to hear from you.

Q: About the sample of AOX-P series small spring return pneumatic rotary actuator what is the cost of transportation?
A :The freight depends on weight, packding size and your country or province region, etc.

Q: Are you manufactory or trade company?
A :We are the Manufactory specialized in actuator for more than 20 years, in Ruian, Zhejiang province, China. 

Q:What is the minimum quantity of an order for your AOX-P series small spring return pneumatic rotary actuator?
A:We don't have the request for the minimum order value.So you can buy even one piece from us.


Manufacturing process

Our Patents

Our Certificate


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