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Thread: What pressure does your DE filter run at?

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    Join Date
    Jun 2012
    Location
    Houston, TX
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    39

    What pressure does your DE filter run at?

    I was just wondering what pressure people's DE filters run at? I'm guessing mine might be a bit high...

    Pentair FNS60 - after opening up and cleaning grids ~24 psi. After a few week it's usually at ~30 psi and backwashing only ever brings me back to ~28 psi.

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    37,879

    Re: What pressure does your DE filter run at?

    Filter pressure normally has way more to do with a wide variety of details of your plumbing than it has to do with the filter.

    Filter pressures around 30 are very common with in floor cleaning system, and fairly rare otherwise. Still, there is a large amount of variation from pool to pool and 30 psi is within the normal range, even if at the high end.

    If you don't have an in-floor cleaning system, you might have a valve set wrong, or some kind of plumbing blockage after the filter, or just especially long plumbing runs.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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  3. Back To Top    #3

    Join Date
    Jun 2012
    Location
    Houston, TX
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    39

    Re: What pressure does your DE filter run at?

    My filter system is above ground. I think it's mostly pressure loss on the long runs in my case. I'm guessing all the covers with very small holes on the returns in the pool add in some back pressure too.

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    chiefwej's Avatar
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    Jun 2011
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    Tucson
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    Re: What pressure does your DE filter run at?

    My pressure runs in the 30-35 range most of the time. But I have solar panels about 1 1/2 stories above the pool, and an in-floor cleaning system both of which add significant head pressure to the system.
    chiefwej
    Tucson, AZ
    16x36 rectangular (19k) Pebble Tec play pool/spa, Pentair Intelliflo VS 011018, Super II 2hp (spa), Aqua Rite T-15 SWG, Pro Grid 60 DE, Hayward H400 & Heliocol Solar heating, A&A infloor system, fill water w/high CH and TA, 50 ppm borates,TF-100 test kit

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