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Thread: Proper Y-orientatiom

  1. #1
    DIY Junior Member penobscotman's Avatar
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    Default Proper Y-orientatiom

    When a drain line (from a fixture) is connected to a branch line on its way to the stack, should the Y be oriented vertically or horizontally?

  2. #2
    Test, Don't Guess! cacher_chick's Avatar
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    Default

    The branch can enter anywhere from 90 degrees to either side, above the centerline.

  3. #3
    Moderator & Master Plumber hj's Avatar
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    Y's and combos can have any orientation. Only sanitary tees CANNOT be used in a horizontal drain line.
    Licensed residential and commercial plumber

  4. #4
    DIY Junior Member penobscotman's Avatar
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    Default

    Thanks, folks.

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