Kitchen Sink Drain pipe too high...venting question


Old 09-23-15, 11:53 AM
Thread Starter
Join Date: Sep 2015
Location: USA
Posts: 4
Received 0 Votes on 0 Posts
Kitchen Sink Drain pipe too high...venting question

I am renovating my kitchen and decided to switch to a new 10" deep undermount sink. The issue I have run into is that the existing drain pipe coming out of the wall is too high for this deep of a sink and a garbage disposal. I only have 5" from the bottom of the new sink to the center of the drain.

The kitchen is over a 4' tall crawlspace, so I decided to keep the deep sink I have and run the drain down through the floor and tie it into the main drain pipe down there. I'm trying to work out how to vent it if I do this. The attached pdf shows my current setup and 3 ideas I came up with. Which one of these will work the best? Any other ideas that would work better?
Attached Images
File Type: pdf
Existing Piping Layout.pdf (21.3 KB, 149 views)
File Type: pdf
Idea #1.pdf (47.2 KB, 134 views)
File Type: pdf
Idea #2..pdf (17.5 KB, 110 views)
File Type: pdf
Idea #3..pdf (17.0 KB, 103 views)
Sponsored Links
Old 09-23-15, 12:16 PM
ray2047's Avatar
Join Date: Mar 2006
Location: USA
Posts: 33,597
Received 13 Votes on 11 Posts
Please post images not links to PDFs.
Old 09-23-15, 12:37 PM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 18,145
Received 59 Votes on 51 Posts
Are studor vents allowed in your area?

Seems like a lot of work and configuing on your part.. IMO its easier to just open the wall and lower the san tee there.

I believe most of your configurations become a type of S trap that is not to code. Has to do with the weir of the trap in relation to the vent...
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: