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Thread: Hayward sand filter backwash question

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    Hayward sand filter backwash question

    Hello, my 1st post. I will put up my pool info the next time I get on. My question is: While backwashing, Dirty water is being pushed back into my pool from my pump for the 1st few minutes of backwashing, is this normal?
    Thanks!! Mike in Summerville, SC.
    Thanks!
    Mike in Summerville, SC

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    Join Date
    Dec 2009
    Location
    Central Massachusetts
    Posts
    2,690

    Re: Hayward sand filter backwash question

    No, that shouldn't occur. Most likely the gasket in your multiport valve needs to be replaced.
    14,000 gallon IG, Vinyl. Hayward 3/4 hp superpump, Penatair IC40 SWCG, Pentair automation, Hayward sand filter, Aqua Comfort heat pump, Hayward 400k Lo-Nox LP heater.

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    Re: Hayward sand filter backwash question

    Your right. - it sort of hung up the last time I backwashed/filtered and it doesn't turn as smoothly. I didn't connect the dots on that AT ALL. Thanks BK.
    Thanks!
    Mike in Summerville, SC

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