Types of Fire Extinguishers

1. Water Extinguishers

Are convenient extinguishing agent but only effective on Class A fires. The water cools the fuel thereby reducing the heat. The maximum range for water-based fire extinguishers is 15 to 20 feet away from the fire.

2. Carbon Dioxide Extinguishers

Can be used on both Class B & C fires. It extinguishes primarily through a smothering action by establishing a cover between the fuel and the surrounding air. When using a carbon dioxide extinguisher, you should stand 3 to 6 ft away from the fire to gain the maximum effectiveness.

3. Dry Chemical Extinguishers

There are several different dry chemical agents. The most common of all is sodium bicarbonate, which is nothing more than baking soda. There is also mono-ammonium phosphate, which is considered a multi-purpose agent that can work on Class A, B, and C fires. The maximum range for this type of extinguisher is 12 to 20 feet away from the fire.

4. Dry Powder Extinguishers

Are designed to extinguish Class D fires, which are combustible metals such as, aluminium, magnesium, sodium, and potassium. Dry powder extinguishers are used on Class D fires only.

The maximum range for this type of extinguisher is 12 to 20 feet away from the fire.

FIRE EXTINGUISHER COMPONENTS

Carrying handle/operating lever
Locking Pin
Pressure gauge (except for CO² extinguishers)
Discharge nozzle or horn
Instructional label
Inspection tag