An Electric Valve Actuator means that the actuator uses electricity as an energy source in a control system. The electric control valve actuator receives an electric signal such as an adjustment meter and changes the manipulation amount according to the magnitude of the signal. So that the amount of energy of the input or output control object is changed, and the automatic adjustment purpose is achieved.
In recent years, a rise in workplace accidents in the international community has been leading to serious personnel injury and property losses. In consideration of that, Sun Yeh has applied and obtained SIL (Safety Integrity Level, SIL) certification according to IEC 61508 standards for its fail-safe spring return electric actuators to ensure the product safety and increase customers' confidence on products and service.