Pneumatic diaphragm regulating pneumatic valve action unstable several reasons

Pneumatic diaphragm regulating pneumatic valve with compressed air as power source, through the pneumatic diaphragm actuator, and with the aid of electric pneumatic valve positioner, converters, solenoid pneumatic valve, pneumatic valve for attachment to drive the pneumatic valve, realize the switch quantity or proportion type adjustment, industrial automation control system receives the control signal to complete conditioning pipeline medium: flow, pressure, temperature and other process parameters on the given value. Pneumatic diaphragm regulating pneumatic valve is to control the characteristics of simple, quick response, and intrinsically safe, don't need another explosion protection measures.


the reasons for the unsteady pneumatic valve pneumatic diaphragm regulating action, as follows:

1, the compressed air filtration pressure pneumatic valve failure, make the air pressure change frequently.

2, the output end of the pneumatic valve have spirit in the pipeline blocking phenomenon or condensed water discharge.

3, the locator amplifier by particles or wear, make the pneumatic valve closed lax regulation, when the gas consumption would produce output increased oscillation.

4, locator nozzle baffle amplifier of parallel, shutter nozzle.

5, line oscillation or vibration source interference around.

6, rigid actuator is too small, result in inadequate thrust fluid pressure change.

7, output of compressed air pipeline leak.

eight, pneumatic valve rod wear, perform poorly.