Under Sink - Really High Waste Line

Discussion in 'Plumbing Forum, Professional & DIY Advice' started by Frayden, Mar 17, 2019.

  1. Frayden

    Frayden New Member

    Joined:
    Oct 14, 2008
    Location:
    New York
    Hi all,

    First off, this place is amazing and has been for a long time. Big thanks for everyone making it so.

    My drain line is a lot higher than where it should be - see attach image. While it currently has no leaks, this setup is causing my water level to be much higher than it should be and 'm worried about a leak sooner or later. How would a professional fix this problem? Many thanks.

    P.S. this came about because the newly installed kitchen sink is much deeper than it's original one.
     

    Attached Files:

  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Joined:
    Sep 2, 2004
    Occupation:
    Retired Systems engineer for defense industry.
    Location:
    New England
    Take the trap off. You can measure and cut off part of the tubular pipe coming out of the sink to raise the outlet. It looks like there's enough there to get the outlet trap arm to go straight (well, ideally, it would slope down to the wall at about 1/4" per foot). Get rid of that flexible pipe and use some more tubular and you'll be less likely to end up with clogs, too.

    As long as that pipe from the bottom of the sink can go into the trap at least an inch or so, it will still seal when you put it back together.
     
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  4. WorthFlorida

    WorthFlorida The wife is still training me.

    Joined:
    Oct 28, 2009
    Occupation:
    Retired
    Location:
    Orlando, Florida
    Unless the sink drain is needed for the type of sink it is for a certain look, it is very long. I would change the sink drain to something like this. They can be bought in various finishes to match the sink. You still need a flange tail piece and it can be cut, you still need the tail piece for the dishwasher drain hose and that cut be cut 2-3 inches shorter, and the trap then can be higher, hopefully above the waste line

    upload_2019-3-17_22-16-1.png upload_2019-3-17_22-18-0.png
    https://www.homedepot.com/p/The-Plu...ith-Strainer-Basket-Stopper-ESS2157/303759508

    https://www.homedepot.com/p/Everbil...-SearchPLPHorizontal1_rr-_-NA-_-205153885-_-N
     
  5. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    How does the height of the top of the trap adapter compare to the part under the sink? That shallower basket would probably fix it totally, but it is hard to be sure from the photo.
     
  6. Sylvan

    Sylvan Still learning

    Joined:
    Sep 23, 2004
    Occupation:
    plumbing - fire suppression - boiler inspector
    Location:
    New York
    Be very ,very thankful no NY plumbing inspector ever sees your posting as the code violations would get someone a serious fine
     
  7. Reach4

    Reach4 Well-Known Member

    Joined:
    Sep 25, 2013
    Location:
    IL
    To go with that new shallow cup strainer, you could find a branch tailpiece with a higher dishwasher branch. If that is brass or chrome-plated brass, that is OK. That can be cut and connected to a plastic p-trap.

    BrassCraft 829-013 is plastic, and looks like the branch is has may have a higher branch than what you have. Maybe not. Brass tailpieces often have higher branches.
    [​IMG]

    Whatever tailpiece you get, you will cut it shorter. The branch height limits how short you can cut and leave room for the p-trap connection.

    And get a level. Laser levels are nice, but not necessary.
     
    Last edited: Mar 18, 2019
  8. cacher_chick

    cacher_chick Test, Don't Guess!

    Joined:
    Jan 5, 2008
    Occupation:
    Test, Don't Guess!
    Location:
    Land of Cheese
    Funny that no one wants to see where the drain is going. It might be a simple matter of lowering the tee in the wall.
     
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