Design and installation guide
Deluge sprinkler system: selection and application guide
A deluge arrangement uses open nozzles or discharge devices to apply water across the designed zone when the deluge valve opens. Detection and valve control are designed with the control needs of a rapidly developing hazard.
In a deluge sprinkler system, sprinkler heads remain open while the control valve is normally closed. When a separate fire detection system opens the valve, the pipework fills and water discharges simultaneously from all open heads. It is considered for rapidly developing fires and high-hazard industrial areas.
01
Operating arrangement and engineering
Selection considers the product function, the protected risk and operating conditions together. These steps support the site survey and quotation.
Zone and valve control
Define open discharge devices and valve-opening conditions for the protection zone together. Choose electrical, hydraulic or other control within the arrangement supported by the selected system.
Water demand and drainage
Calculate demand from discharge devices operating together. Assess water effects inside the facility, drainage capacity and suitability for the protected equipment.
Hydraulic calculations and layout
Calculate hazard classification, storage or process data, pipe sizes and water demand at the critical point together. Pump, tank and head/nozzle selection are elements of this design.
Testing and maintenance
Verify water supply, valve/alarm functions and the relevant system scenario during commissioning. Record system-specific testing and maintenance tasks in operating records.
02
Applications and site planning
These examples show why placement and equipment requirements can differ between facilities using the same product.
Rapidly developing industrial hazards
- Site requirement
- A need for simultaneous water application to a zone.
- Application approach
- Determine suitability of water application for the fuel/process and select detection from project data.
Protection around equipment and processes
- Site requirement
- Nozzle line of sight, obstructions and drainage.
- Application approach
- Check the protection zone, nozzle placement and process interlocks together.
03
Pre-quotation checklist
Scroll the table horizontally to view every column.
| Check item | Product / application | Information to assess |
|---|---|---|
| System arrangement | Open discharge devices and deluge valve | Design diagram and operating scenario |
| Water supply | Pump, tank and pipe network | Hydraulic demand and available supply |
| Space | Fire hazard and environmental conditions | Storage, temperature and obstructions |
| Handover and maintenance | Function tests and records | System-specific inspection plan |
Select the sprinkler arrangement through a combined assessment of hazard, environment and water supply. Survey and engineering calculations establish its layout, equipment and operating scope.