Air Admittance Valves

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Oatey Sure-Vent 39016 Air Admittance Valve NPT, NPT, PVC

The purpose of an air admittance valve is to provide a method of allowing air to enter the plumbing drainage system without the use of a vent extended to open air and to prevent sewer gases from escaping into a building. An air admittance valve is a one way valve designed to allow air to enter the plumbing drainage system when negative pressures develop in the piping system. The device shall close by gravity and seal the vent terminal at zero differential pressure (no flow conditions) and under positive internal pressures.

Plumb Pak PP10-8SN Coin Air Valve, Metal, Satin Nickel

Plumb Pak Coin Air Valve, Metal, Satin Nickel, 2.94 in L x 2 in W x 2.06 in H Dimensions

RECTORSEAL 97400 Magic Vent Micro Size Air Admittance Valve With Tape

RECTORSEAL Air Admittance Valve, Series: Magic Vent, Micro Size, 1-1/2 in Nominal, Female Threaded End, 3 DFU On Branch, 8 DFU On Stack Nominal, ASSE 1051, Seal 678 Listed, NSF Listed, For Apartments, Schools, Dorms, Hotels and Other Commercial Applications