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Thread: Replaced a MPV and one threaded union is leaking

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    Replaced a MPV and one threaded union is leaking

    Is it ok to remove the 1 1/2 inch threaded male union installed with teflon tape from the MPV and reinstall it? If so, what should I use to connect; telfon tape or plumbers putty?
    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: Replaced a MPV and one threaded union is leaking

    For those larger pipes, I think the Teflon pipe dope works better than the tape.
    Jason, TFP Moderator
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    Re: Replaced a MPV and one threaded union is leaking

    Thank you. It is a very small leak, but I want no leaks. It is ok to remove the union and reseat with Teflon pipe dope?
    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: Replaced a MPV and one threaded union is leaking

    Sure. Just don't over tighten it.
    I have one that leaks, but not enough for me to want to put in the effort to fix it. And the water loss is minimal.
    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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    Re: Replaced a MPV and one threaded union is leaking

    I've sometimes used both Teflon tape and Teflon paste to good effect many times.

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    Re: Replaced a MPV and one threaded union is leaking

    Thank you both. I am on the fence about loosening the joint now as it is such a small drip. I'll sit on this information for a few days!
    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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