Dearborn Plastic Air Admittance Valve with 1-1/2-in OD Connection

It's what I needed

Consult with your Lowe’s associates

They all fit like a glove

Ok

Ok

Compact and no rattle

This valve is much more compact than the other valves nearby on the shelves. I replaced the air admittance valve from my RV that had an annoying rattling. The new valve is quiet and was easy to fit in the tight space under the sink because of its compact size.

Worked as Intended!

Used these to replace the 30 year old automatic trap valves that were installed in my house. They look almost exactly the same and fit in the same space (important, since some admittance valves are a good bit larger for the same thread size and would not have fit in one of my areas). The issue I was having with gray water smell is fixed!