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Old 12-13-2011, 09:14 PM   #1
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Air test plumbing through shower head??


I have a newly plumbed home with copper system that I want to air test. My local Home Depot plumber sold me an air gauge with schrader valve and told me to screw it in the shower head. The shower valve and tub valve are all that are currently hooked up. Everything else is capped. I plan on charging the system to approx 75lbs of air and watching it for a few hours for drops/leaks before turning on the water. I figured the water pressure is the same as the air pressure I'm using. Will this hurt my tub or shower valves in any way.

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Old 12-13-2011, 09:19 PM   #2
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Air test plumbing through shower head??


I can't see where it would hurt anything...i wouldn't test there ,,,but reguardless pump system check for leaks...

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Old 12-13-2011, 09:49 PM   #3
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Air test plumbing through shower head??


just make sure the tub or shower valve is in the warm position so the air will charge both the hot and cold lines. in the code book it used to say that if you test with air you needed to test at 2-1/2 times what the water pressure was gonna be. we just went to 100 and stopped.
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Old 12-14-2011, 05:27 AM   #4
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Air test plumbing through shower head??


Thank you for your responses so quickly. That helps. Happy Holidays!
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Old 12-14-2011, 08:59 AM   #5
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Air test plumbing through shower head??


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Originally Posted by DannyT View Post
just make sure the tub or shower valve is in the warm position so the air will charge both the hot and cold lines. in the code book it used to say that if you test with air you needed to test at 2-1/2 times what the water pressure was gonna be. we just went to 100 and stopped.
Wow really?! That's kind of nuts if you ask me. What plumbing code was that in? Ours is tested at operating pressure, although we normally go 100 psi anyway IF we are using air.
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Old 12-14-2011, 09:25 AM   #6
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Air test plumbing through shower head??


Be careful depending on the make and model of the faucet. Some of the newer high end units have seals that I believe are called lip seals like an o ring but uses the mass and pressure or the water to seal. I have seen faucets leak air but not water, I fill the system with water then pump it with air to get the required test pressure which in my area is 100 psi. Good Luck

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