Quote:
Originally Posted by cdnus
Just out of curiosity, what procedure are you using with the nitrogen pressure test?
EG.--apply pressure, close the supply valve, observe the pressure Gauge over a period of time.
I have had good results with water rather than a gas. Using a gas will not indicate a small leak as readily because it is compressible whereas water is not & will show a minute loss immediately.
The other benefit is the water is visible--even 1 drop.
Craig
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Interesting point, however gas molecules are much smaller than liquid molecules. Therefore a gas may pass through a tiny crack that a liquid cannot. It just takes more time for the gas pressure to drop.