DIY dishwasher install to double sink

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by renomama, Jul 10, 2010.

  1. renomama

    renomama New Member

    Joined:
    Jul 10, 2010
    Location:
    NY
    [​IMG][​IMG]
    My friend says this will work, is he right? I'm afraid I'm going to have backup. If it's not right what will work better?

    Thank you :)
     
    Last edited: Jul 10, 2010
  2. Terry

    Terry Administrator Staff Member

    Joined:
    Aug 17, 2004
    Occupation:
    Plumber
    Location:
    Bothell, Washington
    That is wrong, wrong, wrong.
    Cut the tailpiece on the left and have the p-trap grade downhill to the sink drain.

    The first ruile of plumbing, is that water needs to go downhill.

    [​IMG]
     
    Last edited: Jul 10, 2010
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  4. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

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    Sep 2, 2004
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    Retired Systems engineer for defense industry.
    Location:
    New England
    Are those soap bubbles on the rubber connector, too? It isn't sealed well. As plumbed, the drain line (trap arm) will fill up with food particles and crud, and block up. It has to flow downhill from the output of the trap.
     
  5. hj

    hj Moderator & Master Plumber Staff Member

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    Aug 31, 2004
    Occupation:
    Plumber
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    Cave Creek, Arizona
    Actually, there is no good way to connect whichever side gets the dishwasher. I would use two "P" traps on that installation, but the "branch tee" is still going to make that one hard to connect properly.
     
  6. MACPLUMB 777

    MACPLUMB 777 TROJAN WORLDWIDE SALES RP

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    Houston, Texas, United States


    basically you need to cut the wall open and lower the san tee in the wall ! !

    Drainage water " does " not run uphill you have to get that lower in the wall that is

    all there is to it !

    Once you do that the rest of the sink plumbing will come together the right way ! !
     
  7. jimbo

    jimbo Plumber

    Joined:
    Aug 31, 2004
    Location:
    San Diego
    There are three inviolable cardinal rules of plumbing.

    1st rule: things flow downhill. You have created worse than a deep trap, which is a problem in itself. You have a serious crud catcher.
     
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