Pneumatic diaphragm regulating pneumatic valve leakage of the two main 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.


pneumatic diaphragm regulating pneumatic valve leakage of the two main reasons, as follows:

1, the packing of parts and pneumatic valve seal leakage
a and gland follower didn't pressure, pressing; Ptfe packing has been aging, deterioration.
b, graphite asbestos packing oil stem node.
c, gasket corrosion cause deformation or damage. Parts cleaning need to pay attention to matters of the parts cleaning needs attention

2, pneumatic diaphragm regulating pneumatic valve full close leak big
a, pneumatic valve core is the corrosion and wear.
b, pneumatic seat outer thread is corrosion.