The Tyco / Gem Model AV-1-300 Alarm Check Valves are a divided seat ring, rubber faced clapper, waterflow alarm check valves that are intended for use in wet pipe (automatic sprinkler) fire protection systems. They are designed to automatically actuate electric and/or hydraulic alarms when there is a steady flow of water into the system that is equivalent to the discharge rate of one or more sprinklers. See
Technical Data Sheet for further information.
Replacement face and clapper gasket kits are available for this model -
click here for details.