FM-200 is a compound of carbon, fluorine and hydrogen (CF3CHFCF3). It is colorless, odorless and electrically non-conductive.

It suppresses fire by a combination of chemical and physical mechanisms without affecting the available oxygen. This allows personnel to see and breathe, permitting them to leave the fire area safely.

In the very unlikely instance where a discharge occurs in an occupied space, personnel will be able to see and breathe, permitting them to leave the area safely. As such, the system is authorized for use in normally occupied spaces.

FM-200 has acceptable toxicity for use in occupied spaces when agent concentration is in accordance with NFPA 2001, and the applicable rules of the International Maritime Organization (IMO) and US Coast Guard.

FM-200 asset fire protection

The FM-200 zero Ozone Depleting Potential (ODP) fire suppressant supplied and installed by GIELLE is now well established as the single most effective Halon 1301 replacement. It is approved and verified around the world by such organisations as Britain’s Loss Prevention Council, Lloyds Register, and the US Environmental Protection Agency.

FM-200 is suitable for virtually all total-flooding fire suppression applications, although it is most commonly used to protect vital company assets – those upon which the company’s survival might well depend. However, as it does not remove significant quantities of oxygen or obstruct vision, FM-200 is also ideal for use in occupied rooms or enclosed compartments, and is quickly cleared when ventilated.

Rapid reaction

Fires are extinguished rapidly, typically knocking out class A, B and C fires in less than 10 seconds. This minimises atmospheric toxicity and the generation of smoke and soot. Physical and chemical actions combine in FM-200 to form an irresistible fire fighting force. FM-200’s physical properties lower the flame temperature, while the chemical action suppresses flame propagation.

In fact, FM-200 is the appropriate choice in applications where liquid extinguishants, water-based or dry chemical products can cause costly damage or result in considerable and expensive downtime. Because of its zero conductivity, this includes electrical, communications and data processing equipment and plant or machinery.

Replacing halon with FM-200

The Gielle FM-200 fire suppression system is the perfect choice as a Halon replacement system. Often, the system can be dropped into existing pipework reducing retrofit time and costs.

Halon 1301 Drop-In: The combination of the aforementioned features allows the system to be used as a virtual “drop-in” replacement for existing halon installations. Most changes are limited to agent storage cylinder and nozzle replacement.

FM-200™ is a trademark of The Chemours Company


FM-200 fire systems

Design, supply, and installation of gaseous fire fighting systems based on FM-200.


3M™ Novec™ 1230 systems

Clean agent suppression systems using 3M™ Novec™ 1230 Fluid, turnkey solutions.


International Halon Bank

Gielle is authorized halon banking for halon recovery and recycling activities.


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