Kitchen Sink... No Vent? Plus Moving Plumbing

Users who are viewing this thread

monkeystomach

New Member
Messages
26
Reaction score
0
Points
0
Location
Virginia
Hi Everyone,

The below pictures are of my (old) kitchen sink setup. To me there appears to be no vent. The picture from below the house seems to show the same thing because the 3" pipe that continues to the left connects to the plumbing that leads to the sewer...









From the inside of the kitchen picture I plan on moving the sink to the right and using it as a corner sink.

I want to me sure I do everything right and it is correctly vented. What is the best way to do this?

Should I just copy the ABS setup that I have and connect it to the main pipe under the house?


Thanks,

Ed
 

Terry

The Plumbing Wizard
Staff member
Messages
29,946
Reaction score
3,460
Points
113
Location
Bothell, Washington
Website
terrylove.com
I haven't seen a sink plumbed that way before.

If you have a vent somewhere between the kitchen sink and the other plumbing, I would think you would be okay.
In a sense, using the oversized pipe is like having a loop vent without the loop.
I don't know how an inspector would view it there.
I personally wouldn't install one that way unless I had talked to a local inspector first.
And if I did, I would want a vent included like the picture below has.

An island vent looks more like this
FH03OCT_ISLANSI_01.JPG


The santee on the vent below the floor should have been a combo.
 
Last edited:

DonL

Jack of all trades Master of one
Messages
5,205
Reaction score
72
Points
48
Location
Houston, TX
Terry,

My kitchen is hooked up just like the original posters.

I am on my own septic system, and I have the kitchen sink going into a grease trap.

Should I have a vent also ? I guess we have no codes here in the sticks.


You Expert Plumbers have a lot to keep in your brain, and I am out of memory.


Enjoy your Day, Take time to play.


DonL
 
Last edited:

Terry

The Plumbing Wizard
Staff member
Messages
29,946
Reaction score
3,460
Points
113
Location
Bothell, Washington
Website
terrylove.com
I think with the 3" line, and the fact that you must have already had an inspection, that it will be fine.
The oversized 3" line allows for air over the flowline.
In Japan, that's how they do a lot of the plumbing. Oversized trunk lines to provide venting.

island_sink_bert_polk.jpg
 
Last edited:
Top
Hey, wait a minute.

This is awkward, but...

It looks like you're using an ad blocker. We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. If you'd like to support the site, please allow ads.

If any particular ad is your REASON for blocking ads, please let us know. We might be able to do something about it. Thanks.
I've Disabled AdBlock    No Thanks