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Thread: Sand Filter normal PSI

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    Join Date
    May 2015
    Des Moines, IA

    Sand Filter normal PSI

    I have a sand filter for an above ground pool. My question is what is the normal range for PSI when it is filtering? mine seems to be staying around 1PSI...I thought it use to be around 5 PSI...
    we have an above ground 18 X 34 sand filter

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    Mod Squad Bama Rambler's Avatar
    Join Date
    Jun 2009
    SouthWest Alabama

    Re: Sand Filter normal PSI

    There really is no normal. The pressure all depends on the plumbing, equipment, location, etc.. If it used to run 5 psig and now it runs 1 psig and nothing else has changed you may have a bad gauge. It also could be that your pump impeller is partially clogged and not moving the same amount of water that it used to.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/¼hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
    Pool School ----- Pool Math ----- TF-Test Kit

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    morzh's Avatar
    Join Date
    Jul 2015
    Jackson, NJ

    Re: Sand Filter normal PSI

    1. Pump is not pumping.
    2. your filter is on Bypass (recirculate) or stuck in it despite the handle position.
    3. Bad gauge. Obvious if you have good jet, filtering and the gauge is low.

    Do yu have the water jet out of your return?

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