Clean Agent Trace Tube Fire Suppression System

System Overview

The Clean Agent Trace Tube Fire Suppression System is an automatic, localized fire detection and suppression solution designed for protecting enclosed or critical equipment areas such as electrical panels, server racks, CNC machines, battery cabinets, and control enclosures.

This system uses heat-sensitive polymer detection tubing that both detects and suppresses fires directly at the source, providing fast, reliable, and targeted protection without causing damage to equipment or leaving residue.

Operating Principle

The system operates on a self-activating principle, eliminating the need for external power or electronics.
A pressurized clean agent cylinder is connected to a specialized polymer trace tube routed throughout the protected enclosure.

When a fire occurs:

  • The ambient temperature near the flame rises rapidly.
  • The trace detection tube softens and ruptures at the hottest point (typically between 100–180°C).
  • The sudden pressure drop triggers the release of the clean agent directly through the rupture point or through a "melting diffuse pipe" (depending on system type).
  • The agent extinguishes the fire almost instantly — before it can spread or cause significant damage.

System Types

The system generally comes in two configurations:

Direct Release System

  • The trace detection tube itself acts as both the detection and discharge line.
  • When the tube ruptures, the extinguishing agent is released directly through the rupture onto the fire.
  • Best suited for small enclosures or single-point risk areas.

Indirect Release System

  • The trace detection tube serves only as a detection line.
  • Upon rupture, pressure is vented, activating a separate valve that releases the agent through dedicated "melting diffuse pipe".
  • Ideal for larger enclosures or where more controlled discharge distribution is required.

Suppression Agent

The system typically uses Clean Agents  that are electrically non-conductive, residue-free, and safe for sensitive electronics. Common agents include:

  • FK-5-1-12 (Novec™ 1230 or equivalent)
  • HFC-227ea (FM-200® or equivalent)
  • CO₂ (for non-occupied enclosures)

Agent Properties:

  • Zero ozone depletion potential (ODP = 0).
  • Low global warming potential (GWP).
  • \Safe for use in normally occupied areas (for FK-5-1-12 / HFC-227ea).

System Components

Component

Description

Cylinder Assembly

High-pressure storage cylinder containing clean agent; available in various capacities (e.g., 2kg–10kg).           

Pressure Gauge with Switch

Continuously monitors system pressure and provides electrical signal for supervisory panels.                        

Flexible Detection Tube

Heat-sensitive polymer tube (rated up to 25 bar); routed throughout the protected enclosure to detect heat or flames.

Discharge Tube 

Precisely engineered tamprechar detection tube ensure even agent dispersion throughout the risk area.

Mounting Bracket / Clamps

Secure the cylinder and tubing inside or near the protected equipment.

Actuation Head / Valve Assembly 

Automatic or manual valve for agent release; can include pressure switch feedback. 

Optional Control Panel Interface

For alarm signaling, system monitoring, and integration with building fire alarm system.

Advantages

  • Automatic and self-contained — no external power required.
  • Fast response — extinguishes fire at the source in seconds.
  • Localized protection — minimizes agent quantity and cost.
  • No residue or cleanup — safe for electronics and delicate components.
  • Environmentally friendly — compliant with latest clean agent standards.
  • Low maintenance — only periodic inspection required.

Compact design fits within or near electrical cabinets or small enclosures.

Applications

  • Electrical & control panels
  • Data racks and network enclosures
  • Battery storage systems (ESS/BESS)
  • CNC and manufacturing machinery
  • Telecommunication cabinets
  • ATM and kiosk enclosures
  • Laboratory equipment and fume hoods

Standards and Compliance

The system design and components typically comply with:

01.

UL 2166 / UL 2127

Clean Agent Extinguishing Systems

02.

NFPA 2001

Standard on Clean Agent Fire Extinguishing Systems

03.

IOS 14520

Gaseous Fire Extinguishing Systems

04.

EN 15004

Fixed Firefighting Systems using Gaseous Agents

05.

CE & LPCB

Certified Components (where applicable)