Oatey Sure-Vent 1-1/2 in.–2 in. 160 Branch, 24 Stack DFU Air Admittance Valve with White PVC Sch. 40 Adapter

The plumbers who installed the original Studor vent also used pipe glue on the valve when they screwed it in. SIGH. Fortunately, when I purchased this as a replacement, the included hardware was exactly what I needed. If you need a valve like this, you know what it is.FUNCTION: Before installing it, I put it over my mouth and looked upward (it's meant to operate vertically). It would not allow air to flow outward, but would allow air inward exactly as desired. The flap inside seems to be higher quality than the original Studor I replaced.INSTALLATION: Very simple. Because of my unique previous install issue with the glue, I cut the existing pipe as close to the top as possible -- cutting off the previous screw-in ring. This included adapter has two levels of inlet rings: 1-1/2 and 2", depending on which pipe you have. They're two separate tapers on the same adapter. I've seen reviews where people seem confused that the smaller ring inside is actually what they need on the same pipe. I hand-tightened the vent and then glued the adapter back to the top if my (now bare) pipe.All of the old symptoms of a failing value went away. Inspecting the old valve (I wasn't about to put my mouth on it), I could tell that it wasn't completely closing anymore. Some dirt or residue was inside it and lightly just blocked the path. 7 year life span on the old one and now a 5-minute replacement next time due to the lack of glue on the threads hah.

Fixed the bad smell coming from my bathroom vanity

Easy install and works great for places where traditional vent runs are impossible.

Works as expected

It works well. I used the 2 inch pipe.

When my old vent jammed up like a Monday morning commute, I knew it was time for a change. Enter the Oatey Sure-Vent 1-1/2 in.–2 in., my new plumbing hero. 🦸Installing this bad boy was smoother than butter on hot toast. Seriously, even my pet goldfish could have done it (if only it had opposable fins).Once in place, the Sure-Vent worked its magic. Gone were the days of gurgling pipes and mysterious bathroom sounds that made me question if my house was haunted. My plumbing system is now running so efficiently, I half-expect it to start giving motivational speeches.To anyone suffering from vent woes, do yourself a favor and get the Sure-Vent. It’s the upgrade you didn’t know you needed but will be eternally grateful for. Plus, you’ll have the added bonus of peace and quiet—no more haunted house vibes. 🛠️💧

Great brand, great product.

thanks you,