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Thread: Leaky CO's

  1. #1
    DIY Senior Member DavidTu's Avatar
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    Dec 2009
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    Default Leaky CO's

    During a 2-story standing water test of my DWV I notice that some of the CO's in basement had the smallest leaks.... I thought they were already pretty darn tight and I'm a little concerned about overtightening them. Are they just not tight enough or was I supposed to use teflon tape or something around the threads? Or is there just too much pressure w/ the water test and since the system is usually not pressurized it is nothing to worry about?

    Thanks!

  2. #2
    Moderator & Master Plumber hj's Avatar
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    Aug 2004
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    Default

    You WERE supposed to use a thread sealant of some kind, but they would probably still leak. There are several possibilities to stop the leak, either a thicker joint compound, additional wraps of Teflon tape, or a rubber cleanout cap clamped over the fitting's outlet, (and over the plug at the same time).

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