Product introduction: ZPQ-01/02 pneumatic valve positioner is an auxiliary instrument used with pneumatic control valve, it accepts the pneumatic control instrument given 20 ~ 100Kpa 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. In addition, the valve positioner also has the following characteristics:

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

Improve the speed of pneumatic control 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

Pneumatic valve positioner is mainly composed of shell, air path plate, master and auxiliary lever, bellows assembly and amplifier components.

Designed according to the principle of torque balance.

Major technology