
FK-5-1-12 (Perfluorohexanone) is one of the most widely used clean agent fire extinguishing media in the international market today. Its extinguishing mechanism is primarily based on physical heat absorption, and it exhibits extremely high chemical stability along with excellent environmental characteristics. FK-5-1-12 is non-conductive and non-corrosive, and it does not cause damage to precision equipment. After discharge, it vaporizes rapidly and leaves no residue, making it a globally recommended, environmentally friendly clean-agent fire suppression solution for high-end applications.
In an externally pressurized gas fire suppression system, the extinguishing agent (e.g., FK-5-1-12) and the driving gas (nitrogen) are stored separately in the agent cylinders and the driving gas cylinders. When a fire occurs, nitrogen from the driving gas cylinders is introduced into the agent cylinders, propelling the extinguishing agent through the piping network into the protected enclosure for rapid fire suppression.
Compared to stored-pressure systems, externally pressurized systems offer the following advantages:
Longer discharge distance
More stable operating pressure
Improved discharge performance
Safe, Non-Toxic, and Personnel-Friendly
FK-5-1-12 offers a high margin of safety and allows short-term human exposure at design concentration without adverse effects. It does not generate corrosive or hazardous by-products after discharge, enabling occupants to evacuate quickly and safely.
Ultra-Low Environmental Impact
ODP (Ozone Depletion Potential) = 0
GWP (Global Warming Potential) ≈ 1, one of the lowest among all clean agents
Atmospheric lifetime of approximately 5 days, making it the most environmentally benign fire-extinguishing chemical currently available in the international market.
Clean and Residue‑Free:
No powder or liquid residue after discharge; no contamination of equipment.
Ideal for environments requiring high cleanliness such as data centers, archives, and laboratories.
High Extinguishing Efficiency
Discharge time ≤ 10 seconds, achieving extinguishing concentration within a very short period.
Utilizes the total flooding method, capable of rapidly extinguishing Class A, Class B, and electrical fires.
Mature and Reliable System
Well-established technical standards.
Compact equipment configuration, strong system interlocks, and simplified maintenance and management.
The extinguishing mechanism of FK-5-1-12 is a combined process of heat absorption and interruption of the combustion chain reaction.
When a fire occurs, the suppression control system receives the alarm signal and actuates the selector valve and the container valve, releasing the agent rapidly through the distribution piping into the protected area.
FK-5-1-12 extinguishes fire through the following mechanisms:
• Absorbs a large amount of heat, rapidly reducing flame temperature.
• Interrupts the combustion chain reaction, preventing further flame propagation.
• Provides slight oxygen dilution, enhancing the overall extinguishing performance.
With its extremely rapid dispersion characteristics, the agent can reach the design extinguishing concentration within seconds, ensuring a fast, safe, and complete clean-agent suppression effect.

Agent Storage Pressure | 0.39 MPa(20℃) |
Maximum Operating Pressure | 5.3 MPa(50℃) |
Agent Charging Density | ≤1.25 kg/L |
Operating Activation Power Supply | ≥DC24V,1.5A |
Fire Suppression Method | Total Flooding |
Agent Discharge Time | ≤10 S |
Activation Methods | Automatic, Manual, Mechanical Emergency Operation |
Pilot Gas / Driving Gas | Nitrogen |
Driving Gas Charging Pressure | 13.5 MPa (20℃) |
Pilot Gas Charging Pressure | 6 MPa (20℃) |
Operating Ambient Temperature | 0 ℃ ~ 50 ℃ |
The FK-5-1-12 suppression system is the ideal choice for protecting:
Data Centers & Server Rooms
Telecommunication Switch Rooms
Power Control Rooms & Substations
Cultural Heritage Sites & Museums (Archives, Art Repositories)
Control Rooms on Offshore Platforms & Marine Vessels
Industrial Process Control Rooms
Bank Vaults & Record Storage Facilities
In summary, any water-sensitive, high-value, or irreplaceable asset within an enclosed space is a prime candidate for FK-5-1-12 suppression system protection.
Call to Action:
Are you looking for a fire protection solution that offers:
Maximum equipment safety
Non-toxic and safe for occupied spaces.
Zero environmental impact
High extinguishing efficiency
Mature technology and easy maintenance
An FK-5-1-12 suppression system provides fast, clean, safe, and reliable professional fire protection.
Contact us to receive a customized system design and quotation tailored to your needs.
Streamlined Steps to Obtain Your Custom Fire Protection Solution
Liaoyepo Road, Ningxiang High-tech Zone, Changsha City,Hunan Province, China
Your full-cycle fire protection partner. We handle everything from concept and installation to long-term safety assurance.
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