Labels:text | cartoon OCR: FIRE EXTINGUISHER HANDLE NOZZLE SPRING RELEASE VALVE 2 FIRE! GAS CARTRIDGE 3 DISCHARGE TO BURN, a fire needs heat and oxygen. A water-filled fire extinguisher works . . by removing these essentials; the water reduces the temperature of the fire, and its rapid evaporation creates a blanket of adle steam to smother the flames. Operating WATER the extinguisher punctures a gas-filled bulb, raising the pressure inside the cylinder and forcing the water out onto the fire. Other types of SEE extinguishers use powder, foam, ALSO or gas to smother the flames.
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