wye or what

Mcnattyp · Jul 23, 2011

What fitting to use here?

I can run the sink and toilet lines at elevations relative to each other (the dotted line). The sink is 2" drain, the toilet 3".

Would it be a 3" elbow with 2" heel inlet like this? Or is that baaaad for the toilet vent?

I could connect the lav drain downstream from this fitting and connect via a wye on its side.

Job is in Portland Oregon.

Tom Sawyer · Jul 23, 2011

You can not use a heel outlet tee to pick up the lav/vent in that position

Sponsor · 2022-01-29T12:20:58-0800

Mcnattyp · Jul 23, 2011

Ok so wye on its side then?

Mcnattyp · Jul 23, 2011

How about a combo tee (aka wye-tee):

The toilet is vertical, sink to the left and drain to the right. I would put a reducing on the sink end to go from 3" to 2".

hj · Jul 23, 2011

Combo with a bushing in the end to reduce it to 2".

Mcnattyp · Jul 23, 2011

Thanks HJ, once I talk it through, the right answer makes the most sense.

Plumber2011 · Jul 24, 2011

Hi guys

I think you would be better off ending the toilet run in 4"x3" elbow and installing a 3"x2" wye fitting, rolled above the centerline of the toilet drain pipe...makes for a better vent relationship to the toilet drain line...see image below.

Tom Sawyer · Jul 24, 2011

That does pass IPC but it is always better for the water closet to be washed by a fixture upstream on a wet vent system.

hj · Jul 24, 2011

As long as he has the sink connected to the toilet's vent line to keep it flushed clean, there is no problem with the installation as drawn.

wye or what

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