An engineered clean-agent total-flooding system for enclosures where water or conventional suppression agents may cause unacceptable equipment damage or operational interruption. FK-5-1-12 discharges rapidly and leaves no agent residue after discharge.
The FK-5-1-12 clean agent system (DN5112) is an engineered total-flooding fire suppression system. Each system is individually engineered for the enclosure it protects: agent quantity, pipe network, and nozzle selection and placement are calculated for the specific hazard rather than taken from a catalog.
FK-5-1-12 is stored as a liquefied compressed gas, superpressurized with nitrogen, and discharged through a distribution pipe network and nozzles as a two-phase mixture of liquid and vapor. When discharged, FK-5-1-12 rapidly vaporizes and suppresses fire primarily through chemical interference with the combustion process, combined with heat absorption. It does not extinguish primarily by reducing the oxygen concentration in the protected space.
Because the agent is electrically non-conductive and leaves no residue after discharge, the system is suited to enclosures where water-based suppression would damage sensitive equipment or interrupt critical operations.
Occupied-space use: may be used in normally occupied spaces when the design concentration and personnel-exposure provisions comply with NFPA 2001 and the applicable system listing. This is not an unconditional statement of occupant safety; occupancy provisions are determined per design.
Every FK-5-1-12 system is developed through a defined process by qualified system designers using controlled calculation methods and approved system documentation.
Components are selected and configured as part of a complete engineered system and are not offered through the website as stand-alone products.
Available container sizes and arrangements are defined by the approved system documentation. Not every container size or arrangement is approved in every jurisdiction.
FK-5-1-12 systems require qualified design and installation. Representative considerations include:
Approval and certification status varies by system configuration, container size, pressure, component, and jurisdiction. Refer to the current DueNorth certificates, listings, approval documents, and technical documentation for the specific configuration under consideration.
View approval and certification statusDocuments are provided through the controlled document library, which displays only current, released revisions.
DueNorth FK-5-1-12 systems interface with compatible listed releasing-control equipment in accordance with the applicable system design, listing, installation requirements, and project sequence of operation. Detection, releasing, notification, and supervisory functions are provided by a listed releasing control unit installed to its listing and the requirements of the Authority Having Jurisdiction.
