The most common way to install an AAV on a sink drain is to tie it into the horizontal waste arm between the P-trap and the drain outlet in the wall behind the sink. You can also install an AAV on a riser connected at the point where the waste arm drops to the drain much like you would install a conventional vent pipe.

Where should an AAV be installed?

Air admittance valves are typically placed between the P-trap of a fixture and the drain line. They’re usually mounted on one leg of a sanitary tee, with the other leg going to the drain. The unit must be placed per local codes and the manufacturer’s instructions.

Can a AAV be placed in a wall?

Each AAV has to be accessible and have unimpeded airflow, so it can’t be sealed inside a wall.

How do I install admittance valve?

Quote from the video:
Quote from Youtube video: The AAV must be installed vertically. And cannot be more than 15 degrees out of level also determine the DFU load of the fixture or fixtures.

Where does an air admittance valve go?

Air admittance valves are generally placed on a soil pipe that is a minimum of 200mm above the highest water entry point – i.e. the highest point wastewater will reach within a soil pipe. They are most commonly installed at the end of a soil pipe, but can also be installed inline, using a branch.

Can an air admittance valve be boxed in?

You’d usually install the air admittance valve within the loft or it is boxed in within the property. Sometimes they’ll be installed in airing cupboards, usually to keep them out of sight.

Can you vent a toilet with an air admittance valve?

Don’t worry if you do not have a vent pipe in your house, or if it is blocked and you can’t fix it. Instead of thinking about massive construction projects, you can use an Air Admittance Valve, well-known as a cheater vent.

Can an air admittance valve be installed horizontally?

Manufacturers specify that an air admittance valve be installed within 15º of vertical. So the sideways installation shown above is not acceptable, and it will not function properly in that position.

How long does an air admittance valve last?

AAV’s are certified to reliably. However anything mechanical can and will fail. Some manufacturers claim they’re good for 500,000 uses (approximately 30 years of use). US manufacturers offer warranties that range from 1 year to “lifetime”.

How high does a Studor vent need to be?

The stack type Studor AAVs shall be installed six (6) inches above the highest flood level rim of the fixtures being vented in stack applications. 8. Studor AAVs installed in an attic area shall be located a minimum of six (6) inches above any ceiling insulation. air to enter the valve.