Working Principle Of Electric Actuator

An electric actuator is a mechanical device that converts electrical power into torque by means of a motor. It is used for rotary or linear motion. And can be programmed (such as PLC control), through the signal control (4-20mA, 1-5VDC, 0-10VDC) to make the valve opening more automatic, improve production efficiency and work efficiency.

Due to the increasing demand for automation and the development of technology, the demand for electric actuators has also improved a lot, such as safety performance. Electric actuators now have over loading protection, and when the voltage exceeds the required range, or an abnormal overheating occurs, the protection is immediately activated to prevent a failure that could cause the project to suspend and reduce productivity. When the motor is cooled, the switching power supply can be switched on again and the motor can work again.


An electric actuator is a geared motor that can have a variety of voltages and is the primary component that produces torque.
The voltage commonly used in single-phase motors is:
· 12V, 24V-DC
· 24V, 110V, 220V-AC
The voltages commonly used for three-phase motors is:
· 380V AC

At present, the electric actuator is widely used in many fields. They are used with ball valves or butterfly valve in a wide variety of applications including:

· Wastewater treatment
· Food processing
· Pulp and paper
· Irrigation

At COVNA, we are committed to providing quality, professional services to our clients. German technology, follow the ISO quality system, ensure every step of the manufacturing process is error-free, provide high-quality products.

For more information on electric actuators, please contact us at