What type of fire extinguisher is designed for flammable gas fires?

A Class B fire extinguisher is specifically designed to combat fires involving flammable liquids and gases. These may include fuels like gasoline, oil, and grease, which can catch fire and produce flames when ignited. The extinguishing agents within Class B extinguishers, such as foam, carbon dioxide, or dry chemicals, effectively smother the flames by displacing oxygen or interrupting the chemical reaction involved in the fire, thereby preventing the spread of fire caused by flammable gases.

The other classes of extinguishers are not suitable for flammable gas fires. Class A extinguishers are used for ordinary combustibles like wood and paper, Class C extinguishers for electrical fires, and Class D extinguishers specifically target combustible metals. Therefore, understanding the correct application for each type of extinguisher is crucial for effective fire safety and response.