Historical
ANSI/ASSE 1050-2009
Performance Requirements for Stack Air Admittance Valves for Sanitary Drainage Systems
Stack AAVs for Sanitary Drainage Systems are devices used in plumbing drainage systems to prevent the siphonage of water trap seals. These devices do not relieve back pressure; they only allow air to enter the system. They are designed to be installed on stacks where branches on multiple floors are connected. When these devices are installed in a building, there shall be at least 1 open vent terminal to relieve positive pressure which extends to the atmosphere outside of the building serving the building drain on which these devices are installed.
CONTENT PROVIDER
American Society of Sanitary Engineering [asse-sanitary]
American Society of Sanitary Engineering [asse-sanitary]