Yet another vent question....(sketch)

SuperDaddy · Mar 25, 2008

Just wondering if it is possible to vent a toilet in this manner (see pic).

4" waste with a 3" vent line coming off the back of the waste line.

I'm not sure if this is acceptable or not. I am worried about the actual "waste" getting caught on the tee portion on the "way down".

I searched, but couldn't find anything that dealt with this scenario.

Any thoughts?

Basement_Lurker · Mar 25, 2008

Why don't you have the tee under the wall instead of the toilet and have a 90 going from under the toilet into the branch connection?

Otherwise, if you are determined to use your current setup, you can swap out the tee for a wye fitting.

Sponsor · 2022-01-29T12:20:58-0800

BAPlumber · Mar 25, 2008

this is a fairly common setup for older homes. the (barrell vent) usually is used with a 2" Vent (code), I've seen it with a 3/4" vent (not code). I don't see a problem with a 3" vent, but no advantages.

hj · Mar 26, 2008

vent

You need a "Y" rather than a "T", but otherwise it is okay. Depending on the rest of the plumbing system, you may only need a 2" vent however

SuperDaddy · Mar 26, 2008

Thanks for your help guys, I appreciate it.

Bombjay · Mar 27, 2008

Hope this quick scribble helps.It shows a 4x3 toilet bend into a sanitary tee that is below your 3" vent

SuperDaddy · Mar 27, 2008

bombjay said:
Hope this quick scribble helps.It shows a 4x3 toilet bend into a sanitary tee that is below your 3" vent

Excellent. Thanks. I am still tossing around ideas.

I appreciate the help.

Yet another vent question....(sketch)

SuperDaddy

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