Testing for a gas leak
i recently installed new pipe and have completed the job and i am interested in pressure testing requirement.
I have about 70' fo 1 1/4 black pipe withe 3 connections and a PSI guage.
I put 20 PSI of air on the line and used soap to inspect for leaks 12 hours later i have lost 5# of air pressure.
What is premitted my soap testing shows no leaks.
How long does the pipe have to hold and at what pressure. Does not the temperature of the pipe change the pressure of the air.
Spray the fittings down could be a pin leak on one of them, 15 lbs 15 min. Should not lose any pressure at all.
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