Kitchen sink installation and plumbing under sink?

Discussion in 'Plumbing Forum, Professional & DIY Advice, Tips & ' started by Anita, May 23, 2012.

  1. Anita

    Anita New Member

    Messages:
    4
    Location:
    NC
    I had to redo the plumbing under the sink because of a new sink.

    Is it OK to have a rise of 8-9 inches from the bottom of the trap to the exit hole?

    Also, does it matter which hose is used for hot vs cold water?
  2. Terry

    Terry Administrator Staff Member

    Messages:
    15,004
    Location:
    Bothell, Washington
    It sounds like you added a deeper sink, which means the drain in the wall is now too high.
    If you have a disposer, I imagine that the lower part will be underwater now. I like to cut into the wall and lower the plumbing there when a deep sink is installed.

    As far as the faucet goes. Normally hot is to the left, cold on the right
    And if the faucet handle goes front to back, Hot toward the wall, and Cold toward the child hanging onto the handle from the front.
  3. Anita

    Anita New Member

    Messages:
    4
    Location:
    NC
    Actually the sink holes are just in a different place and we tried to make a configuration that would allow drainage.
    It is all hooked up now but two of the plastic slip joints are leaking, how can we get that to stop??


    Thanks so much for your quick response,it is much appreciated.

    Hot & cold is good to go , thanks Terry!
  4. Terry

    Terry Administrator Staff Member

    Messages:
    15,004
    Location:
    Bothell, Washington
    On the swivels, loosen everything up, and then tighten the swivel on the p-trap first. The vertical and the horizontal come next.
  5. Anita

    Anita New Member

    Messages:
    4
    Location:
    NC
    Can the t connector for disposal be below the level to where the water exits past the trap?
  6. Gary Swart

    Gary Swart In the Trades

    Messages:
    7,349
    Location:
    Yakima WA
    Basic fact. Unless pumped, water does not run uphill no matter what the source.
  7. Terry

    Terry Administrator Staff Member

    Messages:
    15,004
    Location:
    Bothell, Washington
    This is what you are shooting for. Hopefully the outlet on the tee is a little higher then the drain side of the p-trap.
    You can go underwater if the sink is too low, and the water will drain, but it won't drain away as well as it should. Some water will always remain.

    [​IMG]
  8. Anita

    Anita New Member

    Messages:
    4
    Location:
    NC
    Job finished, Thanks Terry, for all your time and trouble.....Anita <3
  9. hj

    hj Moderator & Master Plumber Staff Member

    Messages:
    26,631
    Location:
    Cave Creek, Arizona
    Your previous questions raise some issues. How about a photo of the finished product?
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