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New York City Fire Department
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Fire SAFETY / PORTABLE FIRE EXTINGUISHERS / CLASSES OF EXTINGUISHERS


Fires are classified into five (5) classes. They are described below:

Ordinary Combustibles

Class A
A fire extinguisher labeled with letter "A" is for use on Class A fires. Class A fires are fires that involve ordinary combustible materials such as cloth, wood, paper, rubber, and many plastics.

Class A Extinguishers
Flammable Liquids

Class B
A fire extinguisher labeled with letter "B" is for use on Class B fires. Class B fires are fires that involve flammable and combustible liquids such as gasoline, alcohol, diesel oil, oil-based paints, lacquers, etc., and flammable gases.

Class B Extinguishers
Electrical Equipment

Class C
A fire extinguisher labeled with letter "C" is for use on Class C fires. Class C fires are fires that involve energized electrical equipment.

Class C Extinguishers
Combustible Metals

Class D
A fire extinguisher labeled with letter "D" is for use on Class D fires. Class D fires are fires that involve combustible metals such as magnesium, titanium and sodium.

Class D Extinguishers
Combustible Cooking

Class K
A fire extinguisher labeled with letter "K" is for use on Class K fires. Class K fires are fires that involve vegetable oils, animal oils, or fats in cooking appliances. This is for commercial kitchens, including those found in restaurants, cafeterias, and caterers.

Class K Extinguishers

 

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