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

I’ve used this Oatey product several times. It works perfectly and is very easy to install.

Did the job. Quick shipping. Very happy 😊.

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.

Works fine.

I purchased this Oatey AAV to solve a lack of air venting on the plumbing circuit that included my washing machine. The AAV solved the problem. Between the Oatey website and its YouTube videos, I could diagnose the problem correctly, size the unit I needed, and perform the DIY plumbing effort correctly. With Oatey, it’s more than just the product … it’s the wealth of useful information they provide for getting the job done right. Thank you, Oatey.

Quality air vent. I put one in to get rid of odor coming through the vent pipe; I think the old one had seen its last days. I think these are the ones I will use with my other properties also. I recommend. You most likely need the 1 1/2".

Easy to install. Fits well.

For the people that wrote it doesn't fit 1 1/2 pipe if you look closely you'll see there's a step in the bore to accommodate the smaller pipe.It works great good price.