What type of fires is a Type B extinguisher designed to combat?

A Type B extinguisher is specifically designed to combat Class B fires, which involve flammable liquids and gases. These types of fires can occur from various sources such as gasoline, oils, solvents, and even certain paints and chemicals that are volatile and can ignite easily. The extinguishing agents in Type B extinguishers, such as foam, carbon dioxide, or dry chemical agents, work effectively to interrupt the fire's chemical reaction or by smothering the flames and preventing oxygen from sustaining the combustion.

Understanding the specifics of fire classes is crucial because using an extinguisher on the wrong type of fire can lead to ineffective suppression or even worsen the situation. Class A fires involve ordinary combustibles like wood and paper, Class C fires relate to electrical equipment, and Class D fires deal with combustible metals. Hence, selecting a Type B extinguisher is essential when dealing with flammable liquids or gases, ensuring effective and safe fire suppression.