Pneumatic valve positioner failure mainly in the supply gas source failure

From the field of fault point of view, pneumatic regulator valve easy to go wrong. The reason is that the source of oil and water leakage problem.

Locator has occurred several symptoms, due to gas source problems caused by failure, gas seal damage, gas source tube corrosion, plastic pipe aging cracks, joint damage and Other reasons, can make the locator abnormal work.

At this point, most of the need to check the gas pipeline on-site use, check the valve, the cylinder connection and the gas source connector leaks, etc., by a dedicated inspection staff check all the valve supply valve, one by one open, measuring the supply pressure , Increase the pressure to meet the work to use; at the sealing end of the connection or diaphragm leak hearing sound, gaskets dealing with leakage points, check the instrument gas line, replace the plastic pipe, check the pressure relief valve gas source is normal, there No leakage and so on.

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