Description
The Reliable Model AAV Automatic Air Vent is designed to reduce the amount of trapped air in a wet pipe fire sprinkler system. Reducing the amount of air in the system reduces internal corrosion of piping by limiting the supply of oxygen and can also reduce the incidence of false alarms. The Model AAV is designed to automatically vent air from a high point in the system as the piping is filled and will automatically close when water reaches the vent. Air that subsequently migrates to the Model AAV will also be vented. The Model AAV is provided with a ½” NPT inlet for connection to the system, and a ½” NPT outlet connection for routing to drain (if desired).