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Thread: 2 HP impeller in a 1 1/2 HP wet end

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    2 HP impeller in a 1 1/2 HP wet end

    I have a 1 1/2 HP pump and wet end Emmerson pump center discharge (Bad pump and impeller, wet end still good). I got a replacement 2 HP pump and wet end side discharge. Can I reuse the 1 1\2 HP center discharge wet end and the 2 HP impeller on the replacement pump.

    So the ending setup would be:

    2 HP pump
    1 1/2 HP Wet end
    2 HP impeller

    Will there be an issue with this setup?

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    Re: 2 HP impeller in a 1 1/2 HP wet end

    5900 G Fiberglass IG pool (circa 1990), SWG Hayward Aqua Rite GoldLine (2013), IntelliFlo Variable Speed Pump (2013), Hayward Pro Sand Filter (circa 1990), Well water (no iron or other metals fortunately), test with Taylor K2006C, Charleston, SC

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    Mod Squad jblizzle's Avatar
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    Re: 2 HP impeller in a 1 1/2 HP wet end

    When you say pump do you mean motor? I would leave the one and a half horsepower impeller on the two horsepower motor just to save money on electricity.
    Jason, TFP Moderator
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    Re: 2 HP impeller in a 1 1/2 HP wet end

    I'm not a professional, but I thought the impellers were sized for the HP in many of those wet ends?
    2016 Artesian Pelican Bay

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    Mod Squad jblizzle's Avatar
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    Re: 2 HP impeller in a 1 1/2 HP wet end

    Most wet-ends are the same for all the motor/impeller sizes; although I think there are a few designs that do have a different diffuser for some of the impeller sizes (I am not sure which ones).

    Just need to make sure that the rating of the impeller is less than or equal to the motor SFHP rating.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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