(206) 949-5683, Top Rated Plumber, Seattle
Results 1 to 6 of 6

Thread: Kitchen sink in new location

  1. #1
    Questions from readers Guest's Avatar
    Join Date
    Nov 2005
    Location
    posts, emails and comments from readers reposted by Terry
    Posts
    187

    Default Kitchen sink in new location

    I need a plumber and a plumbing designer. I live on Capitol Hill in Seattle in a 100-year old house.

    First: We just moved our kitchen sink to a new location, and the drain setup isn’t working well.

    Here are a few photos of the sink setup. Basically, I moved the sink from an outside wall to an inside wall at a 90 degree angle, to get a better kitchen layout. This resulted in having to stretch the run of the drain a few feet away from the wall, instead of the conventional drain right under the sink. With a disposal involved, this makes the run not only long but pretty low. The P-trap is probably 2” from the floor of the cabinet. Lots of water sits in the pipes and the joints don’t seem to want to stay together so well. I need someone to either figure out a way to make that drain setup hold together better, or move it entirely. On that moving option, the current sink drain is directly back to back with the powder room sink drain. That drain is in the wall between the two sinks. So maybe it wouldn’t be a horrendous project.

    This is above a basement and it’s all visible.

    In the lav, the ABS pipe that goes into the wall for the sink drain looks like it’s about 2” outside diameter, but it’s hard to measure really precisely.

    I think the previous kitchen plumbing was 1 ˝” trap and arm, which is what I replaced it with.

    Name:  mill_1.jpg
Views: 317
Size:  61.5 KB

    Name:  mill_3.jpg
Views: 271
Size:  52.2 KB

    Name:  mill_2.jpg
Views: 313
Size:  49.9 KB

    I took some measurements, in the hope that it might shed some light on the situation. Where the disposal tees into the sink drain is 11” above the cabinet floor. (This is measured at the bottom edge of the pipe)
    Where the ABS drain pipe goes into the wall is 15” above the floor of the cabinet, measuring bottom edge.
    The horizontal run that leads from the sink drain over to the P trap is 8” at the elbow, with a gentle slope down to the P.

    Is there any way it might work to keep the wall drain location where it is, but somehow shorten the uphill climb from the P-trap? If there’s only 4” difference from the elevation of the disposal T to the wall pipe, might we be able to set up a different set of pipes/elbows/P trap? Or does it definitively need to move?

  2. #2
    In the Trades Gary Swart's Avatar
    Join Date
    Sep 2004
    Location
    Yakima WA
    Posts
    7,246

    Default

    Did you have Rube Goldberg design this? Now, I know Capitol Hill is a bit kooky, but does water run uphill there?

  3. #3
    Plumber jimbo's Avatar
    Join Date
    Aug 2004
    Location
    San Diego
    Posts
    9,001

    Default

    Gary was being very kind to you!@

    The trap is backwards. Even in the home of Starbucks, it would take something from buck rogers to make water run uphill!

    You didn't mention the dishwasher drain connection, but from what we see, it is likely dirty water from the sink is wallowing in the bottom of the dishwasher.

    You need a lot of help here!

  4. #4
    In the Trades Gary Swart's Avatar
    Join Date
    Sep 2004
    Location
    Yakima WA
    Posts
    7,246

    Default

    Jimbo, I just quit while I was ahead! LOL

  5. #5
    Moderator & Master Plumber hj's Avatar
    Join Date
    Aug 2004
    Location
    Cave Creek, Arizona
    Posts
    25,653

    Default

    quote; With a disposal involved, this makes the run not only long but pretty low.

    It should be "pretty high" at that point. IF the pipe where it goes into the wall is 15" above the cabinet floor, then at the "disposer" it would have to HIGHER than that, NOT LOWER at 11". You have a serious back pitch, besides a "Mickey Mouse" drain at the sink and disposer. DO NOT quit your day job and call a plumber to fix this mess.
    Licensed residential and commercial plumber

  6. #6
    DIY Senior Member dlarrivee's Avatar
    Join Date
    Jun 2009
    Location
    Canada
    Posts
    1,172

    Default

    Okay I really mean it this time... I've seen it all!

Similar Threads

  1. p-trap location Changing from wall hung sink to vanity sink
    By k9mlxj in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 7
    Last Post: 10-22-2011, 04:46 PM
  2. Replies: 5
    Last Post: 08-20-2010, 05:20 AM
  3. Kitchen sink P-Trap location question.
    By kgphoto in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 8
    Last Post: 09-24-2008, 11:43 AM
  4. Air gap location on island sink
    By Boo in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 3
    Last Post: 09-04-2007, 05:56 PM
  5. Sink Location
    By Joe HomeOwner in forum Plumbing Forum, Professional & DIY Advice, Tips & Tricks
    Replies: 5
    Last Post: 11-21-2004, 09:49 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •