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Thread: Bathtub overflow drain

  1. #1

    Default Bathtub overflow drain

    Water comes in faster than my overflow drain can get rid of the water. Is this common or is it indicative of a problem with the drain?

  2. #2
    Master Plumber Dunbar Plumbing's Avatar
    Join Date
    Apr 2005
    Northern Kentucky/Greater Cincinnati Area


    Common on all tubs
    Read what the end of this sentence means.

  3. #3
    Retired Defense Industry Engineer jadnashua's Avatar
    Join Date
    Sep 2004
    New England


    Humm, a drain line is probably 1.5", and the supply is probably 1/2" (although under pressure). I'd expect a drain line to be able to handle most supply situations without backing up. While not using the overflow to drain, my tub drains about in half the time it takes to fill up. The overflow goes to the same place as the main drain. Anybody else?
    Jim DeBruycker
    Important note - I'm not a pro
    Retired Defense Industry Engineer; Schluter 2.5-day Workshop Completed 2013, 2014


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