
Selection Elements of Electric Valve Actuators (Actuators)
date:2023-03-17 11:02
There are two types of electric valve actuators, generally divided into a partial turn electric valve actuator and a multi turn electric valve actuator. The former requires manipulating valves that require partial rotation, such as ball valves and butterfly valves, while the latter requires valves that require multiple turns, such as gate valves.
Electric driven multi rotary actuators are one of the most commonly used and reliable types of actuators. Using a single phase or three-phase motor to drive a gear or worm gear, drive the valve stem nut, which moves the valve stem to open or close the valve. The multi rotary electric actuator can quickly drive large specification valves. In order to protect the valve from damage, the limit switch at the end of the valve stroke of the device will cut off the power supply to the motor. When the safety torque is exceeded, the torque sensing device will also cut off the power supply to the motor. The azimuth switch is used to indicate the opening and closing status of the valve. The handwheel mechanism of the device's clutch device can manually operate the valve in the event of a power failure.