From the various experiences, I encountered problems that often arise in WHCP are leaking, popping, and stuck. Commonly Leaking occurred in the connection of nuts on tubing. It could be leaking at a three way valve components. To this we can issue leaked retighten the bolts or given a Teflon sealant. If for three way valve usually I replace the internal parts like its o ring, whereas in order to overcome stuck at three way valve I do greasing of internal plunger. Stuck in a 3 way valve because it is dirty or arid.
For ordinary problems popping occurs at PSV. PSV is safety equipment to handle excess pressure. Each panel of a pneumatic or hydraulic there must have been his PSV. Just like in the WHCP. When there is an excess pressure, PSV will popping, to release the excess pressure. When it was popping PSV unbiased back to its normal position, the problem is often the case. To fix this we clean the inside and then check the setting.
One of the disadvantages of pneumatic systems which use hydrocarbon gas as a source of power instrument is if the liquid into a pneumatic system. This will cause three-way valve not working well. If the wrong selection of the material, example the Oring not resistant with hydrocarbon substances, will certainly damage the o ring itself
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