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Thread: Frick shaft seal-NH3 leak
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25-03-2009, 01:39 AM #1
Frick shaft seal-NH3 leak
Has anyone come across a shaft seal that sucks in air while running at -20kpa but seals perfectly under pressure when you go to leak check it. The plant has been suffering high discharge pressures due to non condensables but when we switch plant off for leak checking we cant find a leak. The plant is running 2 Frick scews as booster machines and is about 5 years old. Any help on this subject would be much appreciated.
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