The working principle of electric pneumatic control valve and flow characteristics

Electric pneumatic valve working principle and flow characteristic of power supply: DC24V, AC220V, AC380V voltage grade, etc. The input control signals: DC4 - Ma or DC1-20 5V。 Electric pneumatic control valve feedback control signal: DC4 - 20MA（ Electric load block below 500 ohms) By receiving industrial automation control system of the signal, Such as: 4 ~ 20 ma) To drive change valve core and valve seat between the cross-sectional area of the pipeline medium size control of process parameters such as flow rate, temperature, pressure and etc. Automated regulating function. New electric pneumatic - valve actuators embedded servo function, 4 - accept reunification Ma or 1-20 5 v DC standard signal, convert current signal to the corresponding linear displacement, automatically control the pneumatic - valve opening, to achieve the fluid inside the pipeline pressure, flow, temperature, liquid level and other process parameters of continuous adjustment. Electric pneumatic control valve flow characteristic of electric pneumatic - valve flow characteristic, is on both ends of the valve differential pressure under the condition of constant, medium flows through the electric pneumatic regulator of the relation between relative flow and its opening. Electric pneumatic control valve flow characteristics are: linear features, such as percentage and parabolic characteristics of three.