Double Vanity Vent and Drain

[Kathristin]

I am remodeling a bathroom and am a little confused as to how to vent and drain my 60" double vanity. The existing 2" vent/drain is off to the left of the vanity. The attached picture shows what I inteded on doing. I am not that good with isometric drawing to fittings are labeled because I didn't know how to draw them. (This sketch is in no way to scale, the distance from the fixture tee to the 2" main drain is approx 3 feet)

Any input would be greatly appreciated!

 

[hj]

dwv

That is one way. Or, you could do that for the right hand sink with the riser and tee right behind the sink, and use a tee in the main riser, at the correct height, with an arm with and elbow for the left hand sink. That would be my preference unless you also install a cleanout tee below the intersection of the double fixture fitting, (NOT a cross).

 

[Sponsor]

 

[Terry]

In Washington, you would need a 2" x 1.5" x 1.5" x 1.5" fixture cross.

The pipe leading down would be 2"
The vent could be 1.5"

 

[Kathristin]

Thanks. Are 1-1/2"x1-1/2"x1-1/4"x1-1/4" fixture tees available? I realized that I don't need a 1-1/4"x1-1/2" trap, it can stay 1-1/4" to the tee, then be 1-1/2" drain and vent.

According to NJ plumbing code, those sizes are acceptable. Lav is 1 dfu each and 1-1/2" can have up to 3 dfu.

 

[NHmaster]

You can get a 2,2,2 cross and bush down if you cant find one that reduces. Here you can't put anything smaller than 4" through the roof.

 

[hj]

vent

Here you can't put anything smaller than 4" through the roof.

Which is why they make and sell increasers.