This air admittance valve can be used as an individual, branch, circuit, or stack vent. It allows air to enter DWV systems to equalize pressure when water drains out of the system.

Item: Air Admittance Valve
Product Group - Drains: Air Valves and Vents
Pipe Dia. - Drains: 3" to 4"
Material of Construction - Drains: ABS
Color - Drains: White
Connection - Drains: Slip
For Use With: Venting Single Fixture, Individual Branch, Circuit Vent Or Stack Type Application Up To 500 DFU
Length (In.): 5-1/4
Standards: ASSE Performance Standard 10510 And 1051, NES-592, NSF Standard 14, IAPMO, File No C-3803, ITS Intertek Testing Services
Package Quantity: 1