Air Admittance Valve How Does It Work

Air admittance valves – What is an air admittance valve? When is an air admittance valve needed? Capricorn air admittance valves; Rules of operation; Where to install an air admittance valve?

Oatey 39016 Sure-Vent Air Admittance Valve with 1-1/2-Inch by 2-Inch PVC Adapter, 2-Inch - Faucet Aerators And Adapters - Amazon.com

Air admittance valves are operated by gravity. When water and waste move down a drain line, it creates negative air pressure in the pipe. This negative pressure lifts ...

How to Install an Air Admittance Valve or Durgo Valve into Bath and Basin Wastes and how they Work. Summary: What is an Air Admittance Valve and why do I need one?

Occasionally I run into air admittance valves (AAV) in homes during inspections and when I explain them to clients they get a sour look on their face.

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