Alarm Check Valve

The BT 5900 Series Alarm Check Valves are designed for use in wet pipe automatic sprinkler fire protection systems. The valve automatically operates electrical and/or hydraulic alarm devices when a sustained flow of water occurs within the system. An integrated retard chamber helps minimize unwanted alarms caused by pressure fluctuations or water surges. BT Alarm Check Valves are suitable for both variable & constant supply pressure conditions.