Title: AV-1 alarm valve.pdf
General Description The TYCO Model AV-1-300 Alarm Check Valves are divided seat ring, rubber-faced clapper, waterflow alarm check valves that are intended for use in wet pipe (automatic sprinkler) fire protection systems. They may be installed vertically or horizontally*, and they are designed to automati- cally 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.A separately ordered Model RC-1 Retard Chamber (Ref. Technical Data Sheet TFP920) is required for installa- tions subject to variable pressures. It is used to help prevent false alarms asso- ciated with pressure variations in public water supplies.