Adjustment of the pneumatic valve leakage fault solution
by:AIRWOLF2021-01-16
are usually adopt double, multi-layer mixed packing form, simply increasing number, such as the piece to piece, the effect is not significant.
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Replacement of graphite packing method of extensive use of ptfe packing, because of its working temperature in - ~ + ℃ range, when the temperature, lower limit, change is bigger, its sealing has dropped significantly, aging fast, short service life.
Flexible graphite packing can overcome these shortcomings and long service life.
Solution for adjustments of the adjustment of pneumatic valve leakage fault pneumatic valve leakage solution (
Methods)
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Increase of unused sealing grease sealing grease method of pneumatic valve, can consider to increase the sealing grease for progress of pneumatic valve stem seal function.
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Increase the packing method for progress of pneumatic valve rod sealing function, can be used to increase packing method.
Usually adopt double, multi-layer mixed packing form, simply increasing number, such as the piece to piece, the effect is not significant.
Our main products are: pneumatic pneumatic valves, pneumatic ball valves, pneumatic butterfly valve, pneumatic actuators, http://www.
/。
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Replacement of graphite packing method of extensive use of ptfe packing, because of its working temperature in - ~ + ℃ range, when the temperature, lower limit, change is bigger, its sealing has dropped significantly, aging fast, short service life.
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Flexible graphite packing can overcome these shortcomings and long service life.
Therefore some factory all change the ptfe packing to graphite packing, even to buy new regulating pneumatic valve will be one of the four fluorine used after packing into graphite packing.
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But using graphite packing return difference is big, the early some still produce the crawling phenomenon, this must be considered.
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Change flow direction, buy P in pneumatic valve rod end method when the delta P is larger, P is larger, the seal P obviously than seal P problem.
Can, therefore, to change flow direction, the method of P in pneumatic valve rod end instead of P in the pneumatic valve rod end, the high pressure, differential pressure pneumatic valve is more effective.
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Such as corrugated pipe pneumatic valve is usually sealed P should be considered.
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Lens gasket sealing method is used for the lid of the upper and lower sealing, pneumatic and upper and lower pneumatic valve seating.
If the plane sealing, under high temperature and high pressure, the sealing is poor, cause leakage, can use lens gasket seal, can satisfied effect.
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Replace the sealing gasket, sealing gasket is still use the asbestos board, big department under high temperature, the seal function is bad, life is short, cause leaks.
Encounter this kind of circumstance, can convert surrounding the entanglement gaskets, such as 'O' ring, now many plants have adopted.
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/。