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Thread: Loss of pressure on this pipe

  1. Back To Top    #1

    Join Date
    Apr 2011

    Loss of pressure on this pipe

    Here is the pipe that is losing pressure. I get the PSI to 20 and my skimmer fills up. I'm assuming this pipe has a leak around the threads. I put tape on it, screwed it back in and tightened. I did the pressure test and same thing. Drops about 2 lbs in 6 hrs, fills my skimmer and water starts to slowly come out. Any suggestions?
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    34 x 19 salt water free form. 7.5" inside diameter raised spa. 24" raised beam in back. 3 moss rock waterfalls off raised beam and moss rock waterfall out of the spa. (2) Intelliflo VF pumps, 420 Cartridge Filter, 400 BTU Pentair low nox heater. 2.5" suction and 2" returns throughout.

  2. Back To Top    #2

    Join Date
    Jun 2008
    Central MD

    Re: Loss of pressure on this pipe

    Plastic threads are notoriously harder to seal than metal.

    LOTS of tape. Put on what you think is enough, then do 4-5 more turns on all the threads just to be safe. Don't overtighten. A strong hand tight is plenty. Over tightening can cause leaks. You are putting the tape on clockwise right (when looking at the open end with the threads)? That way when you tighten the counterclockwise pressure tightens the tape into the joint.

    You could try this also: ... +PTFE.html

    I like dope better than tape on large plastic fittings.

    There is also a pink gas line teflon tape that is a little thicker and I think easier to use. Can get it at any home improvement center. You can use the pink gas tape on water plumbing, but can't use the white plumbing tape on gas lines.
    24' Round Doughboy AG.
    Usually filled with 3 kids, the wife, and occasionally the dog.

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