Air Admittance Valve location - 265bh

[H22EG8]

Hello everyone, long time lurker, first post. I've been reading here about the shower smell phenomenon and I was going to replace the aav.

The one in the bathroom is easy to find. However, I can't seem to find the one under the kitchen sink. It just goes to the p-trap and then to a diagonal pipe.

Pictures are attached of underneath the kitchen one.

Also for those that replaced theirs.. is it just me or is this bathroom one a tad bit close to the wall?


Appreciate your time and input. Thank you!

[Cate&Rob]

If the upper end of that diagonal pipe leads to the vent stack to the roof, no AAV is required.

Rob

[howson]

H22EG8 -- Cate&Rob is spot on. The "DWV Plan" shows the horizontal pipe leading to a vent that goes to the roof. (The drawing also shows just one AAV in your trailer, which as you found is under the bathroom sink.)



Howard

[H22EG8]

You all are awesome.

Thank you!