Control valve, also known as the control valve, is the main type of actuator. It receives the control signal from the regulating control unit and uses the power to change the fluid flow. Regulating valve generally by the implementing agencies and valves. If you press the actuator used by its power, the control valve can be divided into pneumatic, electric, hydraulic three, that is, compressed air as the power source of the pneumatic control valve, electric power to the electric control valve to liquid medium (Such as oil) pressure-powered electro-hydraulic control valve, in addition, according to their functions and characteristics of points, as well as solenoid valve, electronic, intelligent, field bus type regulating valve. Control valve of many types of products, the structure is also diverse, but also constantly updated and changing. Generally speaking, the valve is universal, it can be matched with the pneumatic actuator, but also with the electric actuator or other actuator.
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