How To Select Pneumatic Actautor And Electric Actuator?

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An actuator is a device that opens or closes valves with power drive and signal control for easy industrial automation. The actuator can be driven by voltage, current, or pneumatic, or even manual, and it responds by converting energy into mechanical motion.

Actuators can be used with ball valves, butterfly valves, gate valves, globe valves, knife gate valves and a wide variety of valves used to control or cut off the media. By setting the control signal in advance, the energy source can be automated through the system without the need for an engineer to be there to open it. When working in hazardous or harsh environments, actuators are a good option to reduce labor and casualties.

Actuators can be divided according to the energy drive: electric actuators, pneumatic actuators and hydraulic actuators.

What Is An Electric Actuator?

An electric actuator is an electrical device that converts electrical energy into mechanical torque, providing power to open or close a valve. The main advantages of electric actuators are high stability, High Torque, can work for a long time, through the signal source control (PLC control), adjustable open angle, overload protection functions, self-locking protection functions, and so on.


What Is a Pneumatic Actuator?

Pneumatic actuators are pneumatic devices that convert the origin of compression into a mechanical torque that can quickly open or close a valve. The main advantages of pneumatic actuators are quick response, fast open speed, large load, can adapt to high torque output applications, good adaptability to the working environment.

How To Choose Between The Electric Actuator And Pneumatic Actuator?

1. From the price aspect, the electric actuator’s price is higher than the pneumatic actuator.
2. In terms of opening speed, the pneumatic actuator opens faster than the electric actuator
3. From the installation aspect, the electric actuator needs wiring or the adjustment signal control. Pneumatic actuators require a compressed air system.
4. The electric drive with a servo motor has the advantage when the force increases rapidly and accurate feedback is needed. For applications that require an accurate, synchronous operation, adjustability, and prescribed feedback programming, an electric drive is a better choice, the electric drive system composed of Servo or stepping motor with closed-loop feedback controller can supplement the deficiency of pneumatic system.

The electric actuator and the pneumatic actuator both have the same function, which is to regulate and control the flow of the medium. How you choose depends on the design of your project, as well as the cost estimates.

Please tell us your needs and budget, we will do our best for you to choose the appropriate actuator, to help you save money and effort. Email to