Add new sink

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by LYoung, Jul 7, 2014.

  1. LYoung

    LYoung New Member

    Messages:
    2
    I'd like to add a new sink on the left side of a 60" vanity. The new drain should be to the left of the center pipe
    Due to the placement of the vents, the current drain can't be used in the wall. Is it possible to tie into the central pipe? It is the vent for the kitchen sink underneath it. Or is the only option to run the drain in front of the wall and lose some drawer space. Or perhaps abandon the idea of a second sink at all.
    Main vent is 2", others are 1 1/2". All appear to be copper

    Thanks in advance for your help. image.jpg
  2. Terry

    Terry Administrator Staff Member

    Messages:
    14,759
    Location:
    Bothell, Washington
    You would move the vent over and out of the way of the lav you intend to add.
    You would then plumb to the waste line on the right.
    You can't use the vent pipe for the kitchen below. Nope! :(
  3. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,245
    Location:
    Cave Creek, Arizona
    You could offset the lav drain to a more central location and connect the two drains to it, or you can connect a drain to the new sink and offset the existing one slightly. Or................., There is more than one way to skin a cat or install a second sink, it just takes some ingenuity.
  4. LYoung

    LYoung New Member

    Messages:
    2
    Thanks for the advice! I hadn't considered moving the center vent.

    Will this work? Or is the vent needed directly on both drains am trying to avoid having 2 large holes in the studs as this is an exterior wall.
    Is passing the water supply lines behind the drain pipe ok?

    image.jpg
  5. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,245
    Location:
    Cave Creek, Arizona
    That is one way to do it, maybe the hardest way. It depends on how the cabinet is made as to where you can put the drain out of the wall.
  6. Terry

    Terry Administrator Staff Member

    Messages:
    14,759
    Location:
    Bothell, Washington
    [​IMG]

    And here is one way.
  7. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,245
    Location:
    Cave Creek, Arizona
    OR, you can just put a double fixture fitting in the existing drain line and offset over to the new left hand sink with a minor jog in the existing right hand one.
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