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Thread: Strange jet threading

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    Kdfoust's Avatar
    Join Date
    Feb 2016
    Riverside, CA

    Strange jet threading

    Hi all:

    I've a jet in my pool that is on it's own pump line; that is I can valve the pump to run only through that jet. It's in the main pool and has an odd thread size. It's neither 1/2 or 3/4 NPT, it's between them. I'm planning to use it for aeration with a little simple piping hooked up to make a fountain.

    What are these odd threads? What do you think the jet was originally for? The pool was built in 1968 and is a lazy L if that helps to guess the original purpose.


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    27000 gallon lazy L, with attached spa, DE filter, Heater, variable speed pump. I do it all, no pool fools on my property!

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    Isaac-1's Avatar
    Join Date
    May 2010
    SW Louisiana

    Re: Strange jet threading

    My first guess would be for some type of pressure side cleaner
    Indoor 20x40 35,000 gallon vinyl pool with 1.5 HP 2 speed Jandy FloPro pump, Hayward EC75 Perflex DE filter, 11 4x12 Techno-Solis solar panels w/ Aquasolar controller, Aquabot Turbo T Robot Cleaner. Also LMI metering chlorine dispenser pump and HotSpring Jetsetter
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