Classes of Fire Extinguishers

Class “A” These fires involve the most typical combustible materials, such as paper, cloth, rubber, and plastics. These types of fire create an ash when burn and are considered ordinary combustibles.

Class “B” This type of fire is associated with flammable liquids, like oils, gasoline, propane, paints, and more. These fires occur from the vapors produced by these flammable liquids.

Class “C” For environments that involve large electrical equipment systems, these extinguishers utilize a non-conductive fire suppression agent.

Class “D” Specialized for unique metals like titanium and magnesium, this class of fire suppressant requires special non-reactive chemical agents that put out the fire without potentially causing a further reaction that could intensify the flames.

Class “K” Designed for fires started by cooking media like oils and animal fats, these extinguishers use a wet chemical agent to both suppress and cool the flames below the auto ignition point.