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Thread: Safe pressure to run filter at?

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    Join Date
    Jun 2015
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    DeBary, FL
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    Safe pressure to run filter at?

    I'm in a rental home with an in ground pool. The pool has lion head water features as inlets. There are no other inlets into the pool other than through these features.

    Right now the water is coming out of the heads pretty hard and I'd like to lower the pressure coming out. But doing this increases the internal pressure within the filter.

    So my question is, what might be a safe pressure to run the filter at before I damage something? If I close the valves to where I'd like them to be, the pressure runs around 30 +\- psi.

    Thoughts?

    Thank you.

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    duraleigh's Avatar
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    Apr 2007
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    Sebring, Florida
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    Re: Safe pressure to run filter at?

    If you are closing the valves and getting 30+ psi, you almost have them shut off. I would not allow more than 25 to be really safe but 30 should cause no harm, I am a little surprised you get adequate flow.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Jun 2015
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    DeBary, FL
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    Re: Safe pressure to run filter at?

    Thank you for the advice. So I did some playing around with the valves trying to figure out what did what and I think I've got things sorted out.

    The pool also has in ground pop up cleaners. The way the valves were turned, they were controlling the flow to both the "main" lion head and the pop ups. So when I closed that off to reduce the flow so it wasn't shooting 3/4 of the way across the pool, it also closed off pressure to the pop ups.

    Once I figured out what was wrong, I turned the valve around the right way and now I can close off the lion head without affecting the pop ups. Also, since the pop ups are now working correctly (they weren't before because of a lack of pressure), the pressure is running around 25 psi or less, and I've got the lions spitting at a good, low pressure.

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    Richard320's Avatar
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    Jan 2010
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    San Dimas, CA (LA County)
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    Re: Safe pressure to run filter at?

    Spitting lion head fountains?

    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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