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Thread: 2"-1 1/2" pipe reducing

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    2"-1 1/2" pipe reducing

    What is the best way to reduce from the 2' PVC pipe to the 1 1/2" skimmer and return connections?

    Is it better to use 2" or 1 1/2" pipe from the pump outlet to the heater, filter and SWG and go back to 2" after the Jandy 3 way valves or use 2" all the way through?

    Thanks in advance,
    14X28 I/G steel wall hump back Kidney 3'-5', 30mil vinyl liner,92" spill over spa, 1hp Hayward Super 11-pool circ., 1 hp Hayward super 11- spa booster, Hayward Tristar waterfall pump through Jandy CS100 for three 24" Brilliant Wonders sheer descent waterfalls and two Jandy Laminar deck jets , Hayward Swim Clear Cartridge 425sqft, Hayward H-series 250,000 BTU N/G, Pro-logic PS8, T-Cell, Hayward Aqua Vac Robotic

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    Mod Squad Bama Rambler's Avatar
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    Re: 2"-1 1/2" pipe reducing

    Bell reducers or swages are best, but it's hard to find those in PVC so bushing reducers are commonly used. It's best to stay as large as possible all the way through the system but a few feet of smaller pipe doesn't make a huge difference. For instance, there's no use bushing up from 1½" pipe between the filter and the heater if it's less than 2' and both have 1½" ports.
    Dave J. TFP Moderator
    24' x 52" Round AGP. 2hp/hp SPL Power-Flo 2-speed pump. 200sqft Waterway Cartridge Filter. 45MHP2(3GPD) Stenner Peristaltic Pump
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    Re: 2"-1 1/2" pipe reducing

    Thanks, that makes sense.
    14X28 I/G steel wall hump back Kidney 3'-5', 30mil vinyl liner,92" spill over spa, 1hp Hayward Super 11-pool circ., 1 hp Hayward super 11- spa booster, Hayward Tristar waterfall pump through Jandy CS100 for three 24" Brilliant Wonders sheer descent waterfalls and two Jandy Laminar deck jets , Hayward Swim Clear Cartridge 425sqft, Hayward H-series 250,000 BTU N/G, Pro-logic PS8, T-Cell, Hayward Aqua Vac Robotic

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