What is a motorized valve?

Basically motorized valves work on the principle of motor movement. And an electric motor is mounted on the valve and geared to the valve stem so that the valve is open or closed when the motor is running.

As the motor is used, it is very much driven by the power supply. And the motor operation is very slow and controlled. When you turn on the motor valve via an external voltage supply, it opens the throttle in a ramp-up slow way. And you close the motor valve, it closes the throttle in a ramp-down slow way.