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Stesso

Install Air Admittance Valve (AAV)

11:21
18:52
343.7K views

At 11:21 in

Kitchen Makeover + PLUMBING ON CONCRETE (Ep.2)

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What happens here

Instead of extending a vent pipe through the roof, an Air Admittance Valve (AAV) is installed. The presenter explains that an AAV allows air into the plumbing system to equalize pressure, preventing slow drains and odors, without releasing noxious sewer gases. Crucially, building codes require AAVs to be a minimum of 4 inches above the highest horizontal drain tube (or in this case, the highest point of the sloped drain before the P-trap). The presenter secures the AAV to the wooden frame, ensuring it meets this height requirement. An access panel is necessary for an AAV in case of failure or maintenance. The valve is attached to a section of ABS pipe using purple primer and ABS adhesive cement.

Goal: An Air Admittance Valve (AAV) is installed as a cost-effective and space-saving alternative to a traditional vent stack, ensuring proper drainage and preventing sewer gas from entering the living space.

Tools and materials

  • ABS Adhesive Cement
  • Air Admittance Valve (AAV)
  • Purple Primer
  • ABS Pipe (for AAV connection)

What they say

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recommending the best solution is to use an aav valve which is an air admits valve and what basically does is it allows air into the plumbing system without allowing the stinky gases to escape the sewer system so basically you have all the benefits of an air vent without any kind of smells and it works through a little vacuum suction lid that's inside of there now for code they said it has to be a minimum of four inches above your horizontal drain tube even though ours is sloped we can't count four inches from here we have to count four inches from its highest point before it goes to the p-trap that's the bare minimum we have the room to go a little bit more than that and this is all strictly to avoid overflowing doing you know a drain flooding so we're able to go way higher because of our cabinets we're going to secure it in place there and use the cement to keep it there we're gonna have this be built into the island with an access panel so this will be the premium solution

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