sink drain with washer drain ?

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by tregg, Jun 20, 2010.

  1. tregg

    tregg New Member

    Messages:
    31
    Location:
    Iowa
    I'm remodeling my kitchen. In the basement the washer drains into a vertical 2 1/2" pipe that stands about 4 feet tall. Is there a problem with running the new kitchen sink drain into that also? I can put a Y on top. Thanks!
  2. Terry

    Terry Administrator Staff Member

    Messages:
    15,413
    Location:
    Bothell, Washington
    You can't dump an upstairs fixture into the top of the downstairs fixture.
    It siphons the p-trap.

    Any would would need to come in below the tee and p-trap.
    The vent for the downstairs fixture would need to tie into the vent above at 42" above the floor.

    [​IMG]
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