APW stands for “air-pressurized water.” APWs are large, silver extinguishers which are filled about two-thirds of the way with ordinary tap water, then pressurized with normal air. In essence, an APW is just a giant squirt gun
Dry Chemical Extinguishers come in a variety of types. You may see them labeled
Wet chemical fire extinguishers are one of the less well-known extinguisher types. We explain all in our simple guide.
Carbon Dioxide extinguishers are filled with non-flammable carbon dioxide gas under extreme pressure. You can recognize a CO2 extinguisher