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Thread: 2" to 1.5" pipe question

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    2" to 1.5" pipe question

    Hi all, I have a question, currently i replaced my pump to pentair whisperflo pump, but the pump is 2" pipe and my current pipe is 1.5". The PB installed to me and they put the 2" to 1.5 pipe connect to my current pipe and the pump. Did this cause any problem?
    - NY Albany ~27000 water
    - In ground Vinyl 18' X 40' X 8' Deep Curved Roman End
    - Pentiar TA 60 Sand Filter
    - Pentair WhisperFlo 1HP Energy Efficient Full-Rated 2-Speed
    - 250K BTU Nat/Elec. Heater

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    Mod Squad jblizzle's Avatar
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    Re: 2" to 1.5" pipe question

    What other option would there be? (assuming I understand your 2nd sentence that is not very clear)

    You would have to use reducers somewhere to interface between the different diameters. There are some better places to do it depending on your setup up, but it should not hurt anything.
    Jason, TFP Moderator
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    Re: 2" to 1.5" pipe question

    Yes, i mean 2 to 1 1/2 reducer to connect the pump and current pipe line.
    - NY Albany ~27000 water
    - In ground Vinyl 18' X 40' X 8' Deep Curved Roman End
    - Pentiar TA 60 Sand Filter
    - Pentair WhisperFlo 1HP Energy Efficient Full-Rated 2-Speed
    - 250K BTU Nat/Elec. Heater

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    JasonLion's Avatar
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    Re: 2" to 1.5" pipe question

    That should be fine. Pumps are happier if they have one foot of straight pipe before the pump that is 2", but even that isn't required 95% of the time.
    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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