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Deluge and Pre-action Systems

Deluge Systems are normally used in special hazard installations where water must be applied to an entire area for protection.
Pre-action Systems are used to protect areas where water damage from damaged sprinklers or piping must be avoided.

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Description

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Deluge Systems are normally used in special hazard installations where water must be applied to an entire area for protection. They use open sprinklers or spray nozzles attached to a piping system connected to a water supply through the deluge valve. The deluge valve is used to control water flow into deluge, pre-action, and special types of fire protection systems in response to a fire. This valve is opened by a fire detection system installed in the same areas.
Pre-action Systems are used to protect areas where water damage from damaged sprinklers or piping must be avoided. A pre-alarm of a possible fire allows time for alternate fire extinguishment prior to a sprinkler discharge. They are designed for applications such as refrigerated areas that require maximum protection against inadvertent operation of the sprinkler system.

Applications:

  • Flammable Liquid Handling
  • Storage Areas for Valuable Artifacts
  • Aircraft Hangars
  • High-Hazard Installations Using Water as Extinguishing Agent
  • Computer Rooms
  • Libraries
  • Archives
  • Refrigerated Areas
Pre-action Deluge Sprinkler System Diagram

Pre-action Deluge Sprinkler System Diagram