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Thread: Question re: repair fitting

  1. #1
    Software Engineer BigRob_NH's Avatar
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    Question Question re: repair fitting

    Good morning folks,

    I'm in the process of installing a new vanity top. pulled the old vanity top/sink out and have the new cultured marble top in place. The drain hole, of course, doesn't line up. I need to move it back about an inch. No problem, just use a repair fitting.

    I grab one and get ready to cut/install and I see that somebody's already beaten me to it and the existing plumbing has a repair fitting place. With not much pipe to work with i have no alternative but to cut out the old one and replace it. Heck, it's about an inch or so so my hole/tail pipe might just line up.

    Here is the issue.

    The pipe coming out for the horizontal run from my ptrap is now only about 3/4 of an inch. If I bury this in the repair fitting it's OK but of course my tail pipe doesn't line up straight with the ptrap. If I insert it only about 1/2 an inch, my tail pipe lines up nicely but, of course, the horizontal run from the ptrap is no longer buried in the repair fitting.

    I see the following as my options:
    1) insert the ptrap the 1/2 inch so that it all lines up. Cement in place.
    2) build a whole new ptrap.

    Frankly, I'd much rather go for 1) if it will be sufficient. Will a pipe inserted the 1/2 inch into the repair fitting be leak proof and sufficiently strong?

    Something tells me that 2) is the way to go but I doubt that, being a novice, I can get the new ptrap assembled and installed so that it fits as perfectly as the existing one.
    Thanks,
    Rob.

  2. #2
    Plunger/TurdPuncher kingsotall's Avatar
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    Default

    I'd go for confidence rather than wishful thinking. It won't cost much to redo the p-trap. Anytime fittings are barely holding on, even if cemented would leave me with a fair amount of burden that I am not willing to bear.

  3. #3
    Master Plumber nhmaster's Avatar
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    Default

    Somewhere in the code it says that the pipe shall be fully inserted into the fitting.

  4. #4
    Plunger/TurdPuncher kingsotall's Avatar
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    Seems like a good rule of them is insert it the same diameter as the male pipe's width. Surely there will be exceptions.

    Disregard the above statement ^^^
    More I thought about it, I don't know what I was thinking!
    Last edited by kingsotall; 08-31-2008 at 09:22 AM.

  5. #5
    Forum Admin, Expert Plumber Terry's Avatar
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    A p-trap is a few bucks.
    When we replace lavs in bathrooms, we throw away all the old stuff underneath.
    It is always a better job with a new trap that lines up.

  6. #6
    Software Engineer BigRob_NH's Avatar
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    Thanks for the input folks.

    Ran down to homers and the parts to build a new one cost all of 7 bucks.

    Now all I have to do is cut/cement it properly.

    Have a great weekend.
    Thanks,
    Rob.

  7. #7
    Moderator & Master Plumber hj's Avatar
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    Default trap

    Haven't a clue as to what you said, or what you are working with, but the correct way is to take it apart until you find a good spot to join to, and then redo it to there.

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