ZPD-2000 Electropneumatic positioner is used with the pneumatic control valve. It receives the electric signal from the
regulator and outputs the pressure signal to control the stroke of the control valve. The positioner can improve the operating
characteristic of pneumatic control valve and overcome the friction of the plug stem and the unbalanced force of the valve plug
induced by change of the medium pressure, thus the position of the valve changes with the control signal from the regulator in
proportion, so that the proper positioning can be attained.

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