When a system is leak - tight but still wet what will vacuum indicator do after the vacuum pump is stopped and valved off from the system?

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2026-09-07 16:05

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If a system is leak-tight but still wet, the vacuum indicator will typically show a stable reading after the vacuum pump is stopped and valved off. This is because the presence of moisture can create a partial vacuum, and as long as there are no leaks, the indicator should not fluctuate significantly. However, if the moisture evaporates or if there are any leaks, the reading may change as the pressure equilibrates with the surrounding atmosphere.

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