A GATE VALVES actuator is a mechanical device designed to remotely open and close agate valve. These actuators are known as multi-turn actuators, as it generally takes at least a couple of full rotations of the valve's control stem to fully open or close the gate. Gate valve actuator are driven by electric motors rated to cope with the often considerable weight of the gate, plus the thrust forces exerted by the fluid passing through the valve. The actuators are generally used in unmanned or remote installations offering convenient long distance or automated control of single or multiple valve systems. Gate valve actuator systems include varying levels of internal control sophistication, but typically include travel and torque sensors, which stop the motor when the valve is fully cycled or obstructed.