Stunning Air Admittance Device

Air admittance valves and automatic air vents are an inexpensive alternative to conventional venting.

Air admittance device. This is the perfect complement to the range of Studor Air Admittance Valves AAVs providing a complete venting solution for any multi-storey building over 10 storeys high. Studor vents allow air to enter the pipes while keeping sewer gasses or odor from escaping. An air admittance valve is a cylindrical dome-topped plumbing fitting about 3 or 4 inches high and sized to fit on 1 12- or 2-inch drain lines.

They are commonly used to vent island sinks and washing machine standpipes. Theyre designed to address negative air pressure in the drain system created when a fixture is drained. Oatey 39012 ABS In-Line Vent Black 1-12 Inch Pack of 1 46 out of 5 stars.

4 of Air Admittance Valve Trap Kit with 1-12 inch Tuuber Vent 2x Superior Seal Air Admittance Valve and 2 of 4 each 1-12 x 1-14 inch Reducing Slip Joint Washer and 4 of 1-12 X 1-14 Tubular pipe. The device closes by gravity without springs or other mechanical means and seals the vent terminal at zero differential pressure no flow conditions and also under positive internal pressure. Now AAVs are accepted by virtually all national building codes including the SBCCI BOCA IRC and IPC plumbing codes.

The air admittance valve AAV is a device designed to allow air to enter the drainage system to balance the pressure and prevent siphonage of the water trap when negative pressure develops in the system. An air admittance valve is a small mechanical device that helps provide airflow for trap seals without the need for additional stack vent piping out the roof. Learn step-by-step instructions for the Oatey Sure-Vent AAV from our Master Plumbers at Oatey.

Inside the dome is a spring-loaded valve that is normally closed. After a toilet flushes the increased water flowing down the drain creates a negative pressure. Air Admittance Valves AAV are one-way vents installed after the trap on the drain line of a fixture.

If an AAV is an acceptable option they can prevent the need to cut holes in walls ceilings. It is typically added to the horizontal pipe between the fixture P-trap and the drain line. The Sur-Vent adapters one-way valve is designed to allow air.