First Class What Does An Air Admittance Valve Do

An air admittance valve AAV sometimes called an auto vent is a device attached to the fixture drain line.

What does an air admittance valve do. Dont forget to share this post References and Further Readings. Air Admittance Valves also called cheater valves mechanical vents and even durgo valves are mechanical devices that provide you with a one-way venting system. Theyre designed to address negative air pressure in the drain system created when a.

Superior engineering along with stringent quality standards ensure unmatched performance. It is for one-way mechanical vents that are used in a plumbing system and it totally eliminates the need for a conventional roof and pipe venting penetration. Air admittance valves are operated by gravity.

It has a mechanism that opens up to admit room air into the drain under the force of the negative pressure caused by water flowing through the drain. Air admittance valves also known as AAVs or durgo valves are valves that help to re-balance the pressure within a soil pipe to normal levels. What does an air admittance valve do.

This negative pressure lifts the sealing washer and lets air in which allows the waste to drain away freely. Those installed internally are generally fitted within rooms or the roof space. They allow air to enter into your drain as water disappears.

Commonly called Durgo valves air admittance valves or AAVs as they are also know are designed to decrease the number of pipes that need to penetrate the roof and walls of a property. When siphoning pressure builds up within the pipe the valve opens to allow air in balancing the pressure. Air admittance valves AAVs work with a sealing mechanism that is lifted to let air into the drain system when there is negative pressure.

When there is a charge of water waste the air admittance valve will open and release the vacuum. Smaller valves are designed to fit 32 mm 40 mm or 50mm waste pipes. This stops a vacuum in the pipework and allows the waste to drain easily without letting smelly gasses out.