Additional InformationASSE 1051-2021|CSA B181.1, B181.2|CSA Z240|ICC Listed|NSF/ANSI 14, 24
Marketing InformationThe purpose of an air admittance valve is provided an alternative method to extending a vent through the roof to the open atmosphere. AAVs are one-way valves that allow air in to protect against siphonage of a plumbing fixture trap while not allowing gases or odors out. Ragnar's air admittance valves have been tested 500,000 cycles and meet all of the requirements of ASSE 1051.