Pre-Action Alarm Valve

The Pre-Action Alarm Valve is used in automatic sprinkler fire suppression systems and operates in conjunction with the fire detection system to control the entry of water into the sprinkler piping network. These systems are designed for facilities where accidental water entry into the piping can cause serious damage. In normal operation, the sprinkler piping network is not filled with water and may be maintained under air or nitrogen pressure depending on the system configuration.

During a fire, when the detection system identifies smoke, heat, or other fire indicators, the control mechanism is activated, allowing the valve to open. Depending on the system's single or double interlock configuration, a fire signal or additional conditions may be required for water to enter the piping network.

Pre-Action Alarm Valves are available in nominal diameters ranging from DN40–DN200 . The valve body is made of ductile iron material. The products are certified with UL and FM  certifications, confirming compliance with relevant fire safety requirements.

Depending on the system configuration, the valve can be used in conjunction with solenoid valves, pressure switches, pressure gauges, air pressure control devices, and control panels. Pre-Action systems are applied in data centers, server rooms, archives, museums, telecommunication facilities, and other areas where water leakage can damage sensitive equipment.