Any kind of electric actuators are a kind of energy to drive valve device. The hydraulic control unit may be human operation of gears, use for hydraulic control valves to switch, or is a kind of have complex control and measuring devices, intelligent and electronic components, using it can realize the continuous adjusting valve. With microelectronics technology development, the hydraulic control actuator become more complicated. Early actuator is only with induction switch position of motor gear transmission device. Now the actuators have already had more advanced functions, hydraulic control not only to open and close the valve and can test valves and actuators working condition for predictive maintenance offers all kinds of data.

Hydraulic control valves for actuators most widely is defined as a kind of can provide a straight line or rotation movement of device drivers, it USES some power sources and to some control signal under the action of work.

Hydraulic control valves enforcement agencies use liquid, gas, electricity or other energy and through motor, cylinder or other device can translate into driving action. Basic actuators used for hydraulic control valves driven to fully open or seated position.