Which type of fire extinguisher uses water as an extinguishing agent?

A Class A fire extinguisher is specifically designed to combat fires that involve ordinary combustible materials, such as wood, paper, and cloth. Water is an effective extinguishing agent for these types of fires because it cools the burning material, reducing its temperature below the ignition point. Additionally, water works by soaking into the burning material, helping to extinguish the fire more thoroughly.

Other types of extinguishers serve different purposes. For instance, Class B extinguishers are used for flammable liquids like gasoline or oils, Class C extinguishers are for electrical fires, and Class D extinguishers are suited for combustible metals. Each class is tailored to handle specific fire types, emphasizing the importance of using the correct type of extinguisher for effective fire suppression.