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Thread: Backflow hose or PVC pipe length

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    Backflow hose or PVC pipe length

    My husband wants to extend the backflow hose. He is also talking about digging a trench and making a longer run with pvc pipe. He wants it to go about 120 feet back. Is this do-able? We have a 1 1/2 HP pump. Any suggestions? Thanks!
    24' Seaspray Evolution CLX Above Ground Pool (~13600 gallons)
    Pentair Sand Dollar SD60 / 22.5" filter / Maximum Flow Rate 60 GPM
    Pentair Dynamo Pump 1 1/2 HP

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    Re: Backflow hose or PVC pipe length

    No problemo unless you are going to push it uphill.
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    Mod Squad woodyp's Avatar
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    Re: Backflow hose or PVC pipe length

    I've got one buried for about 60 feet myself. Just put some drop on it over the distance.
    16x32x52" Steel Cornelius Miramar AGP Vinyl liner 13,100 gal. Buried 2 ft.
    2 Speed Hayward Power-Flo Matrix 85 g.p.m. 22" 250lb. sand filter hard plumbed
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    Re: Backflow hose or PVC pipe length

    I would recommend using 2" PVC. I would also recommend putting a vacuum breaker on the line to allow the line to drain when you are done backwashing. You can get a cheap (less than $10.00) plastic vacuum breaker at most hardware or plumbing supply places. Where you come out of the multiport and use a 90 to go down, instead use a T and put the vent pointing up.


    http://www.homedepot.com/buy/oatey-sure ... 66132.html

    http://www.homedepot.com/Plumbing-Pipes ... =100204205

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    Re: Backflow hose or PVC pipe length

    Thanks for the replies! There is a slight incline. Maybe 10 degrees. Is that too much of an incline? Is the issue that the pump won't be strong enough or that it will burn the pump out?

    He was talking about using 1 1/4" pipe. Is that ok?

    I take care of the everyday maintenance of the pool, so I want to make sure his project is not going to cause any problems! Thanks again!
    24' Seaspray Evolution CLX Above Ground Pool (~13600 gallons)
    Pentair Sand Dollar SD60 / 22.5" filter / Maximum Flow Rate 60 GPM
    Pentair Dynamo Pump 1 1/2 HP

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    Re: Backflow hose or PVC pipe length

    There is a slight incline.
    up or down?
    Dave S.
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
    TFTestkits , PoolMath , Pool School

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    JasonLion's Avatar
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    Re: Backflow hose or PVC pipe length

    Slope down away from the pump is fine, slope up away from the pump could be a problem.
    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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