"scottpepsi" wrote in message
om...

I am adding a walk-in shower with rainshower head mounted from ceiling, 4
body sprays mounted in the wall, a handheld body wand, an exact temp
control valve, and 3 volume control valves . I have 3/4" pex supply lines
to temp valve, then 1/2" copper to control valves,then 1/2" pex to
respective sprays. I have capped everything, and applied an air gauge. I
placed 85 psi of air. In a period of appx. 40 hours, the pressure has
dropped to 75 psi. Does this indicate a leak, or is this an acceptable
loss attributed to tempature fluctuation or some other variable? What is
generaly accepted as a succesful test?(time/pressure)
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Get out a spray bottle of soap water (dish detergent in water or windex) and
spray the joints and fittings, valves, etc. while the pipes are air pressurized.
You will find the leak, fix it, then try the test again. If there are no air
leaks, there should be no water leaks.