Working principle: Pneumatic control valve uses compressed air as the power source, the cylinder as the actuator, and drives the valve with the help of electrical valve positioners, converters, solenoid valves, position retention valves and other accessories to realize on-off or proportional adjustment. , Receive the control signal of the industrial automation control system to complete the adjustment of the pipeline medium: flow, pressure, temperature and other process parameters. Pneumatic control valve is characterized by simple control, fast response, and intrinsic safety, without the need for additional explosion-proof measures.
Pneumatic regulating valve composition: Pneumatic regulating valve is usually composed of pneumatic actuator and regulating valve connection, installation and debugging. Pneumatic actuator can be divided into two types: single-acting and double-acting. The single-acting actuator has a return spring, while the double-acting actuator There is no return spring in the device. Among them, the single-acting actuator can automatically return to the open or closed state initially set by the valve in the event of loss of origin or sudden failure.
