Not Ranked
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
|