11 INDUSTRIAL PROCESS AIR HEATERS (HOT-AIR GENERATORS), HIGH INTENSITY INDUSTRIAL COMBUSTION SYSTEMS AND EQUIPMENT, NAMELY, ROTARY KILN BURNERS, TURBULENT FLAME KILN BURNERS, TURBULENT DIFFUSION FLAME BURNERS, TOROIDAL VORTEX BURNERS, VALVE TRAINS AND FLAME SAFEGUARDS; FUEL OIL AND GAS HANDLING SYSTEMS, COMPRISING PUMP SETS, PUMPS AND HEATER SETS, ALL FOR HIGH INTENSITY INDUSTRIAL COMBUSTION SYSTEMS