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Thread: Inserting a sanitary tee into existing stack that will not move

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  1. #1
    DIY Junior Member denikar's Avatar
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    Default Inserting a sanitary tee into existing stack that will not move

    I'm investigating how to insert a sanitary tee into an existing vertical 3" stack that will not budge at all (vertically). One of the discussions I found here suggested cementing the lower part of the santee and using a fernco fitting for the top part. Is this the recommended method or are there better alternate methods?

    Thanks,

    Tim

  2. #2
    Forum Admin, Expert Plumber Terry's Avatar
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    Normally it takes two of these



    Notice the stainless steel wrap that prevents the pipe from shifting?

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    DIY Junior Member denikar's Avatar
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    Default

    Thanks Terry

  4. #4
    Moderator & Master Plumber hj's Avatar
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    If it does not move, there is no way you could "cement the bottom and use a transition coupling on the top", because you would have to cut out enough pipe to angle the Y in, then slide it down, and then whatever you are using would be too short to fill the gap.
    Licensed residential and commercial plumber

  5. #5
    DIY Junior Member denikar's Avatar
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    To clarify, the cut stack can be moved enough in the x-y direction, just not up and down (z direction).

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