15 Free YouTube subscribers for your channel
Air admittance valves for plumbing venting explained [just over 4 minutes]
Today we take a look at the controversial air admittance valve (how it works, why it was invented, and where you can use it).
![Plumbing a bathroom explained in 4 minutes. [You CAN do it!] #diy #plumbing](https://i.ytimg.com/vi/lxhUIkZrnFw/mqdefault.jpg)
![Washing machine drain line rough in explained. [Just over 2 minutes] North Carolina Code.](https://i.ytimg.com/vi/RnX27GMnmv8/mqdefault.jpg)
Recommended
