Fire extinguishing fog nozzles; fire extinguishing systems comprised of fire extinguisher nozzles and heads in fixed or portable, suspended or pop-up and rotary configurations, stainless steel piping, ball valves, gate valves, solenoid valves, regulating valves, drainage valves, anti-clogging strainers, pump connectors, pressure gauges, liquid storage and gravity tanks, compressed gas tanks, electronic control panels, electronic fire detectors, heat detectors, flame detectors, ionic detectors...