Compact air admittance valve with PVC adapter; ideal for a single fixture or group of fixtures up to 20 DFUs (drain fixture units) on a branch Creates ventilation that prevents the loss of water seal in trap Uses gravity to automatically close seal and prevent circulation of unpleasant bathroom or drain odors Fits 1-1/2-inch and 2-inch piping; temperature rating of -40°F to 150°F (-40°C to 65.6°C); complies to ANSI/ASSE 1050 and 1051; this style air admittance valve is not recognized as a mechanical vent in the International Building Code Exclusive vermin protection system keeps out bugs and foreign objects

Compact air admittance valve with PVC adapter; ideal for a single fixture or group of fixtures up to 20 DFUs (drain fixture units) on a branch Creates ventilation that prevents the loss of water seal in trap Uses gravity to automatically close seal and prevent circulation of unpleasant bathroom or drain odors Fits 1-1/2-inch and 2-inch piping; temperature rating of -40°F to 150°F (-40°C to 65.6°C); complies to ANSI/ASSE 1050 and 1051; this style air admittance valve is not recognized as a mechanical vent in the International Building Code Exclusive vermin protection system keeps out bugs and foreign objects

Compact air admittance valve with PVC adapter; ideal for a single fixture or group of fixtures up to 20 DFUs (drain fixture units) on a branch Creates ventilation that prevents the loss of water seal in trap Uses gravity to automatically close seal and prevent circulation of unpleasant bathroom or drain odors Fits 1-1/2-inch and 2-inch piping; temperature rating of -40°F to 150°F (-40°C to 65.6°C); complies to ANSI/ASSE 1050 and 1051; this style air admittance valve is not recognized as a mechanical vent in the International Building Code Exclusive vermin protection system keeps out bugs and foreign objects