Product Introduction: ZPD-01/02A-B type electric-gas valve positiver is an auxiliary instrument with pneumatic control valve, it accepts the dynamic control instrument to give DC signal 0-10mA DC after conversion output pressure signal to control the stroke of the valve, and through the feedback system to make the stroke and signal proportional change, so as to achieve the correct positioning of the valve core, So it has electric - gas converter and pneumatic valve positioner compound function. In addition, the electric-gas valve positioner also has the following characteristics:

It can overcome the friction resistance of the parts in the valve and the unbalance force of the valve core caused by the change of pressure of the adjusted medium, so as to improve the operating characteristics of the regulating valve.

Improve the speed of pneumatic valve section valve

Can change the pneumatic regulating valve action mode

Division control can be realized

Can operate a variety of spring pressure range of pneumatic control valve

Can be used for Angle stroke pneumatic control valve

Structural principle

Electric-gas valve positioner is mainly composed of shell, nozzle - stop plate, main and auxiliary lever, gas plate and amplifier and other components.

Designed according to the principle of torque balance.

Explosion-proof type valve positioner according to the explosion-proof standard GB3836-83 design of increased safety, its explosion-proof level e II T6.