Studor 20340 Mini-Vent Air Admittance Valve with ABS Adapter, 1-1/2-or 2-Inch Connection

• Compact air admittance valve with ABS adapter
• Ideal for a single fixture or group of fixtures; capacity of 160 DFUs (drain fixture units) on a branch and 24 DFUs on a stack
• Creates ventilation that prevents the loss of water seals in traps; uses gravity to automatically close seal and prevent circulation of unpleasant bathroom or drain odors
• Fits 1-1/2- 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

The unique design of the Studor Mini-Vent provides plumbing ventilation to prevent the loss of water seals in traps without the need for costly roof penetration and vent piping. Studor Mini-Vent Air Admittance Valve with ABS Adapter is a one way valve used for branch or single fixture ventilation. It protects the water trap seals and does not allow sewer gases and smells to leak into the living space. When a negative pressure in the drainage pipe occurs, the valve opens to allow the entrance of air. When the pressure is balanced the Mini-Vent closes absolutely tight, so the foul air cannot escape. Fits: 1-1/2 or 2-inch x 2.625-inch vent height x 2-inch vent diameter. ABS construction with a temperature rating of -40 to 150 deg F.