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Thread: Blocked off clean out?

  1. #1
    DIY Junior Member markbair's Avatar
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    Question Blocked off clean out?

    I'm new the forum and look forward to the help!

    I live in a house that was built in 2006 and I am the second owner. While installing a home filtration unit and looking to tap into the cleanout for the backwash drain on the outside of the home I ran into a little snag. I battled to get the cleanout cap off and found that it was glued on! This cleanout is right on the other side of the kitchen, so it makes sense to be there, but this is what I found.


    You can see the glue holding the cap to the coupler.

    Once I pulled the coupler off with the cap, I found the cleanout completely sealed off. I'm not sure what is sealing it though. It looks and feels like some type of epoxy, but it is perfectly flat. I scratched on it with a nail and it does feel like some type of hardened epoxy. I have no idea what is on the other side of it and I really want to use this as a drain. (Air gapped of course) Does anyone have any idea what this is or have you ever seen this before?




    Thank you again for any insight you can give!

  2. #2
    DIY Senior Member kreemoweet's Avatar
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    Well obviously if you want to put a drain there you're going to have to open up the wall and rebuild that section of piping. Doesn't much matter
    what the perpetrator of that job originally had in mind.

  3. #3
    DIY Junior Member markbair's Avatar
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    I figured that was next. I was hoping you would say "yeah, that is always in the cleanout, you have to drill it out". I guess not.

    The builder of this house is in a class action lawsuit right now. Maybe I should join it...

  4. #4
    Moderator & Master Plumber hj's Avatar
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    It is a plastic "knock out" test plug. Punch a hole in it and hook it with a piece of wire to keep it from falling down the drain, then use a hammer and screwdriver to "cut it loose" around the edges. It was apparently some plumber's "cute" idea to make it non-user friendly when the cleanout was needed.
    Licensed residential and commercial plumber

  5. #5
    DIY Junior Member markbair's Avatar
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    Hj, you just made my day! I was trying to think of another way to run that drain line and this is much easier. I'm surprised he used so much glue. (You can see it "pooled" in the bottom of the pipe) Thank you so much for the help.

  6. #6

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    Quote Originally Posted by markbair View Post
    Hj, you just made my day! I was trying to think of another way to run that drain line and this is much easier. I'm surprised he used so much glue. (You can see it "pooled" in the bottom of the pipe) Thank you so much for the help.
    I'm guessing It's in an 18" crawler. I would scoot in there and cut it behind test cap ,add coupling,Ect

  7. #7
    DIY Junior Member markbair's Avatar
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    Boston1,

    Oddly enough, as soon as I cut it out, I could see that it is actually a Tee set vertically with the long end going up and down, and short part of the Tee extending out of the wall where the plug was. Thanks.

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