Which class of fire extinguisher is primarily used for flammable liquids?

The Class B fire extinguisher is specifically designed to combat fires fueled by flammable liquids such as gasoline, oil, and solvents. These types of fires require extinguishing agents that can effectively smother the flames and inhibit the combustion process without spreading the fire or causing further hazards. Class B extinguishers typically utilize foam, dry chemical, or carbon dioxide to extinguish these fires, making them suitable for environments where flammable liquids are present.

In contrast, Class A extinguishers are meant for fires involving ordinary combustible materials like wood, cloth, and paper. Class C extinguishers are used for electrical fires and are designed to avoid conducting electricity, while Class D extinguishers are suitable for combustible metals, which require specialized agents due to their unique burning characteristics. Each class is designed to target specific types of fire hazards, highlighting the importance of using the correct extinguisher type for effective firefighting.