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Thread: How to properly plug a Jaco fitting?

  1. Back To Top    #1

    Join Date
    Mar 2015
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    Harvey, LA
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    300

    How to properly plug a Jaco fitting?

    I have a Jaco fitting plumbed into my return side for a very old discontinued salt system...here's a pic of it, it's the little metal fitting stuck in the elbow to the right of the jandy valve:




    I'm removing this stuff as I'm about to add a new salt system, and I cut the wire coming from the top of it, then unscrewed it and cut the wire underneath it so I can remove it from the pool...after I did this, I find that water is leaking through the top of it, can't tell if it's coming through the snip of wire left, or if I simply broke the ancient seal...I need to seal this up, and since the elbow is on the inside of the jandy valve, I really don't want to replace the elbow if I can help it. Is there a purpose made plug I can get to put in place of this thing?
    17.4k gallon IG pool with attached spa (spa itself is 730gal), Super Blue Diamondbrite plaster, Circupool SI-45+ SWG, BH/Hayward Cartridge Filter, 2hp 2speed Hayward Super II pump, , Jandy Valves, Waterway Skimmers, Rheem 400k Heater, Polaris 360 cleaner, built 2000+-, replastered June 2015, TF-100 kit---Here's my pool test reading history

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    Patrick_B's Avatar
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    Jun 2011
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    Midland TX
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    Re: How to properly plug a Jaco fitting?

    Sure you can. Can't tell from the pic what size, but likely 1/4" 3/8" or 1/2" NPT threads are what's screwed into the Elbow. Turn everything off, find something to temporarily plug the hole, and take it with you. Any place with good plumbing selections will have a matching size NPT threaded plug. Something PVC or other plastic would be best.
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  3. Back To Top    #3

    Join Date
    Mar 2015
    Location
    Harvey, LA
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    300

    Re: How to properly plug a Jaco fitting?

    Couldn't find a plug in pvc, best I could find was a valve locally. I'll google a bit and see if I can find a plug to replace it, but for the time being, the closes valve screwed in there is holding just fine.
    17.4k gallon IG pool with attached spa (spa itself is 730gal), Super Blue Diamondbrite plaster, Circupool SI-45+ SWG, BH/Hayward Cartridge Filter, 2hp 2speed Hayward Super II pump, , Jandy Valves, Waterway Skimmers, Rheem 400k Heater, Polaris 360 cleaner, built 2000+-, replastered June 2015, TF-100 kit---Here's my pool test reading history

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