Clean agent fire extinguishing system

A clean agent fire extinguishing system (tube-based) is a fire suppression solution that uses a gaseous, non-residue-producing extinguishing agent and a flexible detection tube to both detect and suppress fires—without the need for electronics or external power.

🔥 What Is a Clean Agent?

A clean agent is a fire extinguishing gas that:

• Is non-conductive

• Leaves no residue

• Is safe for humans

• Evaporates quickly without harming electronics or equipment

Common Clean Agents Used:

• FM-200 (Heptafluoropropane)

• Novec 1230 (FK-5-1-12)

• Inergen (Inert Gas Blend)

• CO₂ (sometimes used, but not ideal in occupied spaces)

📦 Tube-Based Clean Agent System Overview

Instead of relying on electronic sensors and control panels, a tube-based clean agent system uses a pressurized polymer detection tube that serves as both the fire detector and the activation mechanism.

🔄 Working Principle

1. Detection Tube Installation

   • A flexible polymer tube (heat- and pressure-sensitive) is routed inside or around the equipment being protected—like control panels, electrical cabinets, or enclosures.

2. Fire Detection

   • In case of fire, the tube detects heat and bursts at the hottest point (usually around 100–150°C).

3. Activation

   • Direct System: Agent is released directly through the ruptured tube onto the fire.

   • Indirect System: The pressure drop triggers a valve on an external cylinder, releasing the agent through dedicated nozzles.