I have a drain pipe in my laundry room. It runs into a sewage drain that I imagine is in the slab. I had the local building inspector come check it out. I haven't investigated enough; but we both believe that this line does not include venting outside of the house.
The inspector told me I needed to add an Air Admittance Valve (AAV) before the two traps (sink + washer) on this drain.
I've never worked with this plastic. It may be PVC (it's white'ish -- could double-check).
Do I need to add some sort of a glue or bond when I attach the AAV (it's threaded)? If so, is there anything special I should use? Or just something compatible with the plastic?
Note: Since this valve depends on the air pressure, I assume it has to be air tight. That's what lead me to asking this question. The guy at Home Depot wasn't very helpful.
