Technical White Paper： Overview Of Pneumatic Rotary Actuator.pdf

Pneumatic Rotary Actuator is an actuating device that uses pneumatic pressure to drive the opening, closing or regulating of valves, also known as Pneumatic Rotary Actuators or pneumatic device, but generally referred to as pneumatic head. The actuator and regulating mechanism of pneumatic actuators are a unified whole, and their actuators include diaphragm type, piston type, fork type, and gear rack type.

Piston type with long stroke, suitable for situations requiring high thrust; The thin film type has a smaller stroke and can only directly drive the valve stem. Fork type pneumatic actuators have the characteristics of high torque, small space, and torque curves that better match the torque curve of valves, but they are not very aesthetically pleasing; Commonly used on valves with high torque. Gear and rack pneumatic actuators have the advantages of simple structure, smooth and reliable action, and safety and explosion prevention. They are widely used in production processes with high safety requirements such as power plants, chemicals, and refineries.

Pneumatic Rotary Actuator

The following are the products you are looking for and the reasons for recommendation:

1. Technical characteristics

Double-acting pneumatic rotary actuator

Emphasizing the double-acting pneumatic drive mode, it is suitable for application scenarios that require bidirectional rotation, such as ABB's UP series and Airwork's AT series products.

High torque pneumatic rotary actuator

Highlights high torque performance and is suitable for large valve control (such as Konan Electric's TW3 series with a maximum torque of 9111N·m).

90 degree pneumatic rotary actuator

Commonly used in valve switch control (such as the default rotation angle of the TW3 series is 90°±5°).

Rack and pinion pneumatic actuator

Based on gear rack technology, it is suitable for compact design (such as Airwork's AT series).

2. Application scenarios

Pneumatic actuator for ball valve/butterfly valve

Directly related to valve control applications, Konan Electric and Nishaka Pneumatics both mentioned that this type of actuator is used for the automated operation of ball valves and butterfly valves.

Industrial automation pneumatic rotary actuator

Covering the needs of industrial automation, such as ABB's UP series for adjusting dampers, turbine control, etc.

3. Function and accessories

Magnetic switch pneumatic actuator

For example, the Airwork AT series supports magnetic switch installation and is suitable for scenarios that require position feedback.

4. Comparison and parameters

Pneumatic rotary vs linear actuator

Users may compare the applicability of rotary and linear actuators. Web page 3 mentions the case of both controlling valves together.

ISO standard pneumatic actuator

Products that meet international standards are more likely to be searched by industrial users, such as Konan Electric's product specifications that meet pressure, temperature and other standards.

5. Market and supplier

Pneumatic rotary actuator supplier/manufacturer

Manufacturers such as Nishaka Pneumatics in India may be searched by regional users.

Pneumatic actuator price/catalog

Users often search for product prices or technical manuals (such as Konan Electric provides a detailed model catalog)