Trolley Mounted Mechanical Foam Fire Extinguisher is filled with a foam concentrate as the extinguishing agent. The foam concentrate, when mixed with water, creates a foam blanket that suppresses the fire by smothering and cooling the flames. Mechanical foam is typically used for flammable liquid fires, as it helps to seal the surface and prevent re-ignition. The Trolley Mounted Mechanical Foam Fire Extinguisher is equipped with a discharge hose and nozzle or a discharge branch.