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Thread: Acceptable PSI Pressure Test on Plumbing

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    Acceptable PSI Pressure Test on Plumbing

    Part I:
    What is the acceptable PSI range for the pressure test on new construction pool plumbing?
    The manifold consists of sch40 2" and 2.5" pipes for pool, spa, water fall.

    Information seems to vary but typical operation will have 10-15 psi and could spike as high as 20-25 psi.
    I've read proper testing should be done with a margin higher than any expected pressures typically 35-40 psi and it should hold for at least 24 hrs. (FYI: there is no regulated standard here since pool construction is unregulated in TX.)

    Part II:
    The deck installer ripped up 2 pipes with the bobcat.
    Plumbing was repaired but the pipe/fittings were slightly pulled out of the gunite when the damage ocurred.
    If the pressure test of 40psi over 24hrs holds should I be concerned about any unseen damage/stress on the pipes?


    Thanks!
    20K gal pool, 2K gal spa, 3 HP Pentair 3050, Quad D.E., 400K BTU, 280 Polaris

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    Re: Acceptable PSI Pressure Test on Plumbing

    Welcome to TFP!

    You have it just about completely figured out. I aim for 30 to 35 psi for 48 hours, but anything between 25 and 40 would probably work. One think to keep in mind is that it is much better to pressure test with water than air. With only air in the pipes the pressure will vary dramatically with temperature, making slow leaks difficult to detect.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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    Re: Acceptable PSI Pressure Test on Plumbing

    My PB made the repairs and retested at 10 PSI (water fill).
    20K gal pool, 2K gal spa, 3 HP Pentair 3050, Quad D.E., 400K BTU, 280 Polaris

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