Electric control Industrial Valves structure and function of

as industry development needs, the emergence of the electric control valve is later than the pneumatic control valve, but its use scope is more and more widely. Because they don't need air supply, install and use more convenient, as long as the power and control signals can work, here small make up to introduce the electric regulating valve structure and function. Figure 1

figure 1 is a typical form of electric control valve, it consists of two detachable actuator and control valve ( Regulatory agencies) Parts. Upper is actuator, accept output regulator 0 ~ 10 madc or 4 ~ 20 madc signals, and convert them to corresponding linear displacement, a regulating valve at the bottom of the push action, regulating the flow of fluid directly. All kinds of electric control valve actuators are basically the same, but the regulator ( Regulatory agencies) Structure by using a lot of different types of conditions, the most commonly used is direct single seat and two straight double seat. Electric control valve is by regulating the body of electric actuators with different industrial field instrument, it takes 4 - regulator output 20 ma or pulse signal, for closed loop control, realize the parameters such as flow, pressure, temperature, liquid level automatic control, and can choose a kind of intelligent electric actuator, realize digital transmission, such as DCS, PLC, more intelligent control system. Electric regulator power supply voltage is 220 v and 380 v, electric valve, electric single-seat regulating valve, small electric flow control valve flow characteristics such as percentage, such as linear and fast 3 kinds.
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