How to order a single acting pneumatic actuator correctly

The valve automation industry is the primary application of the single-acting pneumatic actuator, which is also referred to as a spring return pneumatic actuator. It exhibits enhanced safety in hazardous environments that are combustible and explosive, including coal mining, petrochemicals, and other industries. Furthermore, the single-acting pneumatic actuator can utilize the pretension force of the spring to automatically switch the valve to the safe position (normally open or normally closed) in the event that the system air source fails. This safeguards industrial production from production accidents that result from valve loss of control and ensures reliable safety.

Therefore, prior to placing an order for a single-acting pneumatic actuator, it is important to be aware of the following factors:

1. Torque of output

It is imperative to be aware of the proper method for verifying the output torque of a single-acting pneumatic actuator. The output torque under spring force must be verified, as indicated in the table below. And we must compare the lesser data with your valve output torque with the safety factor. The torque will be altered as the quantity of springs is altered. We are prepared to provide assistance if you are uncertain about the process of selecting a spring return pneumatic actuator.

2. The outer diameter of the actuator

Certain customers may inquire about the external appearance of a single-acting pneumatic actuator. Will it differ with the double-acting type? In reality, the single-acting pneumatic actuator shares the same external appearance as the double-acting pneumatic actuator. The piston is situated between the end cover and the springs. Therefore, it is effortless to convert a single-acting pneumatic actuator to a double-acting pneumatic actuator by simply detaching the springs. We will provide you with our most recent drawings if you wish to verify the actuator's dimensions. Additionally, we are able to provide a 3D file of the pneumatic actuator to assist you in more accurately determining the actuator's dimension.