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Thread: Change Vanity Plumbing:

  1. #1
    DIY Member oldberkeley's Avatar
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    Default Change Vanity Plumbing:

    Replacing old vanity, need to move the plumbing about 18" to the left (blue tape.)

    I'm OK with the hot & cold supply, seems to be fairly straightforward. Not sure what to do about the drain?????

    TIA.
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  2. #2
    Forum Admin, Expert Plumber Terry's Avatar
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    Cut the tee out, and point the new tee toward the blue tape.
    Then point it out the wall with a Medium 90

    If the pipe is 1.5" it should be fairly easy.
    If it's 1.25", it will be harder to find pipe and fittings.

    If it's over a crawl, you can find a 1.5" pipe or larger to connect to.

    Last edited by Terry; 06-02-2010 at 04:36 PM.

  3. #3
    DIY Member export!'s Avatar
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    Is the drain exposed below the floor?
    IANALP
    (I Am Not A Licensed Plumber)

  4. #4
    DIY Member oldberkeley's Avatar
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    Terry-

    Thanks for your prompt answer, as usual. Yes, it's 1.5".

    Followed you great up to "cut the tee out"!

    1. What kind of new tee can I use for the replacement?

    2. What kind of pipe will I use for the run over?

    Export-

    Yes, fairly spacious and easy to work in crawl under the bathroom.

  5. #5
    DIY Junior Member jc60618's Avatar
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    The company that I work for still uses this galvanized pipe set up. The vent bar and stack fitting with the shower arm already comes pre-fabed from the shop. Before cutting the tee out try to see if you can spin the tee. Figure out the size of the branch and buy a 2 feet piece of gal pipe. Insert the pipe into the branch get it snug and then turn it clockwise to the desired position. I always encouter this situation when working on rehabs and it never fails.

  6. #6
    DIY Member oldberkeley's Avatar
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    That things been there since 1958: it ain't spinnin'!

  7. #7
    DIY Junior Member jc60618's Avatar
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    What are you using to spin the tee?

  8. #8
    Test, Don't Guess! cacher_chick's Avatar
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    I'm with Terry- cut the tee and a few inches of pipe top and bottom. Transition the galvanized to new PVC pipe and sani-tee with shielded no-hub couplings. Run new 1.5" PVC properly pitched and turned out to the new stub-out then finish with a trap adapter.

  9. #9
    DIY Member oldberkeley's Avatar
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    Couple more questions:

    1. When I cut out the old cast iron tee from the long vertical run of galvanized drain pipe and replace it with a PVC tee and two no-hub couplings, is there some additional support needed? What?

    2. When I run the new horizontal length of PVC and turn it out with a 90 degree fitting, how is that fitting supported behind the wall?

    TIA.

  10. #10
    Moderator & Master Plumber hj's Avatar
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    Turn the tee and screw a piece of galvanized, or PVC/ABS with a threaded adapter into it. Regardless of how long it has been installed, it will turn. Either use a large pipe wrench, or a piece of pipe screwed into the opening. Drill a hole in the stud and that will support the pipe.

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