Deluge Alarm System and Equipment
A deluge alarm system has all sprinklers or nozzles on the line open, and when triggered it discharges water over the entire protected area at once. The deluge valve is opened by a fire detector, a pilot sprinkler line or manual release.
The system consists of a deluge valve, solenoid or pilot trim, manual release station, alarm switches and open nozzles. It is used at transformer stations, fuel and chemical storage areas, aircraft hangars and other zones with fast-spreading fire risk.
Main Applications
- Transformer and power stations
- Fuel and chemical storage areas
- Aircraft hangars
- Cooling towers and conveyor lines
- Production areas with fast fire spread
Technical Data
| System type | Open-nozzle deluge system |
|---|---|
| Main element | Deluge valve |
| Release | Detector + solenoid, pilot sprinkler line or manual |
| Nozzles | Open sprinklers or water spray nozzles |
| Alarm | Pressure switch and alarm gong |
| Foam option | Usable with foam concentrate (per project) |
| Size and connection | By model (please ask) |
| Approval | UL / FM / VdS certificate by model |
Material Options
| Part | Function |
|---|---|
| Deluge valve | Feeds the whole line with water when released |
| Solenoid / pilot line | Opens the valve on the detector signal |
| Manual release station | Opens the valve by hand in an emergency |
| Open nozzles | Distribute water over the entire area |
| Alarm switch | Reports system operation to the panel |
Which material? Because a deluge system wets the whole area at once, its water demand and pump capacity are higher than other systems; valve size and release method are defined together with the project calculation.
Advantages
Instant Full Coverage
- Whole area wetted at once
Flexible Release
- Detector, pilot line or manual
Cooling Effect
- Reduces heat load on transformers and tanks
Foam Compatible
- Can be combined with foam suppression
Construction and Design Features
- Diaphragm or clapper deluge valve
- Solenoid and pilot release circuit
- Manual release and reset arrangement
- Open-nozzle distribution line
Send the protected area, risk type and release method; we will work out the deluge station and nozzle list with your project team.
How to Choose?
- Define the hazardIdentify areas with fast spread or cooling needs.
- Choose the releasePlan detector, pilot line or manual release.
- Calculate water demandCompare the total flow of all nozzles with pump capacity.
- Consider foamEvaluate foam concentrate for flammable liquid areas.
Complementary Products
Why ORFA?
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Details →Get a quote for your project
Our sales team will prepare the best solution for your needs.