9 Safety equipment, namely, explosion vents, flameless indoor explosion vents, explosion suppression system comprising detectors, electronic control units, suppressors and valves, sold as a unit for use in detecting and suppressing explosions; explosion isolation pinch valves, explosion isolation slide gate valves, explosion isolation backflap valves, spark detection and extinguishing systems comprising detectors, electronic control units, suppressors and valves, sold as a unit for use in detecting and extinguishing sparks; fire protection systems comprising detectors, electronic control units, suppressors and isolation valves, sold as a unit for use in detecting and extinguishing fires; computer hardware, downloadable and recorded computer software, and computer peripherals for operating explosion and fire safety equipment