20349 Redi-Vent Air Admittance Valve

Easy to install and works as it should.

Worked perfectly and was easy to install. win win

Replaced the old one in my RV with this one, sewage smell is gone.

Had to replace same model that failed during sink clog episode after it started allowing water out, which it is designed not to do. I confirmed the failed device had to be replaced by tyring to float it in a cup of water and within 20 seconds it submerged below the level of the side vents. A working device would have kept afloat above those vents. This new one has a 2 in 1 sized adapter which I don't care for because it is larger. I preferred to keep the old adapter in place since it takes up less space. Note that product came without instructions, just a QR code. You also need to buy teflon thread seal tape to install it, not included. I like that it has warranty but only for the original purchaser, which is why I could not cash in on the failed unit. It is not transferable.

Works great. Leaves air in to vent drains then seals up to prevent sewer gas from entering the house.

Funciona muy bien

Had a smell coming from my bathroom sink and read an article about this item. It was easily installed and 'presto' the smell is now gone So easy, wish I had done it sooner.

Works great, got rid of the funk.

Cumplió con las expectativas para lo cual la compré satisfecho al 100

Our home is in a rural area and we have a septic system. In the lower level of our home, we have a septic pit that handles the gray and septic waste from a 3 piece bathroom. The septic pit is directly vented to the main vent of the building that leads to the roof. When the septic pit is full, a pump comes on and pumps the effluent to the main septic line for the septic system. But the pump is so powerful that every time it worked, it also emptied every P trap and toilet in the house. This is not only annoying but also a very dangerous situation that then allows septic gases to enter the home. I purchased this Air Admittance Valve and attached it above the 2" vent pipe coming directly out of the septic pit. It works perfectly, drawing only the air from the immediate area and not from the entire venting system. No more worries about septic gases. However, the 2" ABS adapter that comes with the product is only designed to take the Air Admittance Valve that screws in at one end, and a 2" ABS pipe that you seal to the other. This was fine for me, but if you were intending to attach it to a 1 1/2" ABS pipe, you would also need an additional adapter to do so.

Great product

Easy to install.

After few years stop working