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Thread: First time using backwash valve-How to help needed.

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    First time using backwash valve-How to help needed.

    I have a newly installed backwash valve (cat #263064) on my Pentair Quad DE filter.
    I need someone in the business to help me with step by step instructions.
    Thanks for any help, I believe this is an easy procedure but I want to get it right the first time.





    San Marcos,California 20K Pool, Pentair Quad DE ,Above Ground, Pebble Tec 1/2 HP Whisperflow Pump ,IntelliChor SWG

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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: First time using backwash valve-How to help needed.

    I believe that you turn off the pump, twist the valve handle to unlock, push the valve handle down to engage backwash, twist to lock, turn on the pump, wait till the backwash water runs clear, turn off the pump, twist to unlock, pull up into filter position, twist to lock, and turn the pump back on to go back to normal circulation.

    Only move the valve when the pump is off. Sometimes the water coming out will start clear, then turn dirty, so don't give up too quickly if the water starts out clear.
    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: First time using backwash valve-How to help needed.

    I understand the push pull valve instructions the part that I do not understand is- 1.Do you release the air from the top air release valve before changing the valve position? and 2. Do you add DE back into the filter after backwashing?

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    Join Date
    Dec 2010
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    Re: First time using backwash valve-How to help needed.

    Here's the owners manual: http://pentairpool.com/pdfs/QuadDEFilterIG.pdf
    The instructions recommend bleeding air before you move the valve. They also recommend cycling between backwash and normal to loosen up more DE.

    And yes you want to add DE after you've back washed but only abou 80% of the startup amount.
    15,600 Gallon, 16' x 32' In-Ground Vinyl Pool
    Pentair VS 3050 pump, Quad DE 60 filter and SunTouch controller
    8 gallon Liquidator, Aquatherm EcoSun Solar Panels, 2 wheel ThePoolCleaner

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    Re: First time using backwash valve-How to help needed.

    I have the owners manual, but I could not find a step by step instructions for the procedure.
    So far this is what I have tell me if this sounds right.
    1.Release air pressure from pressure gauge at top.
    2.Shut off power at control box.
    3.Change valve position to backwash.
    4.Turn on power at control box.
    5.Run backwash until water is clear.
    6.Repeat cycle between filter and backwash.
    7.Add 9.6 pounds of DE slurry to skimmer.
    Please let me know if this sounds right.

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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: First time using backwash valve-How to help needed.

    That sounds right. There is a good writeup here that says about the same thing and also goes into some related topics that might be interesting.
    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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