What classification of portable fire extinguisher is designed for combustible liquids and gases?

The classification of portable fire extinguishers designed for combustible liquids and gases is Class B. This class includes fires involving flammable liquids such as gasoline, oil, paint, and solvents, as well as gases such as propane and butane. It provides the specific agents necessary to effectively suppress these types of fires, which typically spread quickly and can be quite hazardous.

Class B extinguishers use agents like foam, carbon dioxide, or dry chemical powders, which are aimed at displacing the oxygen around the flames or interrupting the combustion process. Properly identifying the correct type of extinguisher for combustible liquids and gases is crucial for effective fire suppression and ensuring safety during firefighting efforts. Each class of extinguisher is tailored to combat specific types of fires, and understanding this classification helps firefighters choose the appropriate tool for a given situation.