FM-200 / HFC-227ea Fire Extinguisher System
FM-200/HFC-227ea is an odourless, colourless, liquefied compressed gas. It is stored as a liquid and dispensed into the hazard as a colourless, electrically non-conductive vapour that is clear and does not obscure vision. It leaves no residue and has acceptable toxicity for use in occupied spaces at design concentration.
FM-200/HFC-227ea extinguishes fire through a combination of chemical and physical mechanisms. Its mechanism is considered active, with the primary action being the physical cooling of the fire at the molecular level.
As it belongs to the same class of agents used in the refrigeration industry, it acts as an efficient heat transfer agent. By removing thermal energy from the fire, FM-200/HFC-227ea prevents the combustion reaction from sustaining itself.