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Thread: What pressure for air testing copper?

  1. #1
    DIY Senior Member seaneys's Avatar
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    May 2007
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    Default What pressure for air testing copper?

    Hello,

    I'd like to pressure test my vertical spa installation (lots of fittings). It has held 40 PSI for 4 hours.

    What is the recommended air pressure and set time for air testing copper? The valves are installed. I did not want to risk over pressurizing the valves.

    Thanks,
    Steve

  2. #2
    Plumber RioHyde's Avatar
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    Sep 2004
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    100psi for 30 minutes here

  3. #3
    Moderator & Master Plumber hj's Avatar
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    Aug 2004
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    Default test

    The valves are rated for 150 psi working pressure and no common compressor is allowed to exceed about 125 psi, so you couldn't damage the valves.

  4. #4
    DIY Senior Member seaneys's Avatar
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    Thanks a ton! The max pressure was exactly what I was just scratching my head about.

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