Direct-type Fire Detection Tubing Fire Suppression System（FK-5-1-12）

1. System Overview

The Direct-Type Fire Detection Tube Fire Suppression System is a self-contained fire protection device that integrates early fire detection and automatic suppression into a single unit.
The system utilizes a high-sensitivity fire detection tube as both the detection and discharge element. When a localized fire occurs and generates elevated temperature, the detection tube automatically ruptures at the fire source, without the need for electrical power or a control panel, directly releasing the extinguishing agent to achieve rapid and precise local fire suppression.

With its simple structure and fast response, this system is especially suitable for confined spaces, concealed fire risks, unmanned facilities, or applications where conventional fire suppression systems are impractical. It is widely used internationally as a local application fire suppression solution for critical equipment protection.

The system employs FK-5-1-12 (Perfluorohexanone) as the extinguishing agent. FK-5-1-12 is a clear, colorless, odorless liquid at ambient temperature. Its latent heat of vaporization is approximately 1/25 that of water, while its vapor pressure is about 25 times higher than that of water. The agent rapidly vaporizes upon discharge, absorbing heat and suppressing fire primarily through physical cooling. After discharge, the agent is clean, nonconductive, non-corrosive, and leaves no residue, causing no damage to protected assets or sensitive equipment. It has zero Ozone Depletion Potential (ODP = 0) and an extremely low Global Warming Potential (GWP = 1), with an atmospheric lifetime of approximately 5 days, fully complying with environmental protection requirements. The required extinguishing concentration is well below the No Observed Adverse Effect Level (NOAEL), ensuring no secondary harm to personnel, making FK-5-1-12 a highly safe and environmentally sustainable clean agent.

2. Key Advantages

1) No Power Supply Required – Fully Mechanical Actuation

The system operates solely based on the direct thermal response of the detection tube, remaining unaffected by power outages or control system failures, ensuring exceptional reliability.

2) Precise Localized Fire Suppression

The detection tube ruptures directly at the hottest point of the fire, discharging the agent exactly at the ignition source and preventing unnecessary discharge in unaffected areas.

3) Rapid Response

The system activates in the incipient stage of fire development, effectively preventing fire spread and minimizing equipment damage.

4) Flexible Installation and Strong Adaptability

With a compact configuration, the system can be freely routed around protected objects, making it ideal for confined, enclosed, or geometrically complex spaces.

5) Simple Maintenance and Low Life-Cycle Cost

No complex electrical inspections are required. Routine maintenance is straightforward, resulting in low overall ownership and operating costs.

3. How It Works

1. Under normal conditions, the fire detection tube is either pressurized with gas or functions as the agent discharge conduit, while the extinguishing agent is stored in the agent cylinder.

2. When a fire occurs in the protected enclosure, localized high temperature acts on the detection tube.

3. The detection tube softens and ruptures at the point of highest temperature.

4. The extinguishing agent is discharged directly through the rupture point onto the fire source, achieving rapid cooling, combustion inhibition, and/or oxygen displacement, thereby suppressing the fire.

4、System Components

5、Main Technical Parameters

6. Typical Applications

• Electrical control cabinets and switchgear cabinets

• Telecommunication cabinets and server racks

• Lithium-ion battery energy storage cabinets and battery enclosures

• Engine compartments and equipment housings

• Wind turbine nacelles

• Industrial automation equipment and critical control units

7. Contact Us

If you are seeking a direct-type fire detection tube suppression system that offers:

• Power-free automatic activation with high reliability

• Integrated early detection and localized suppression

• Precise discharge with minimal false activation and secondary damage

• Flexible installation for confined or enclosed spaces

• Simple maintenance with controlled total cost

We invite you to contact our fire protection solutions team for:

• Risk assessment and system configuration recommendations

• Customized technical solutions and product selection support

• Project pricing, delivery coordination, and technical services

• Installation guidance, commissioning support, and user training

We are committed to delivering high-reliability, internationally compliant local automatic fire suppression solutions for customers worldwide.