7
Machines and machine parts, namely machines and machine parts to produce heat and increase the transfer of heat and radiation; Machines and machine parts to increase the efficiency of internal heat in order to increase the production of energy; Machines and machine parts for catalytic conversion; Machines and machine parts to recover internal heat within a catalytic system; Catalyst tube used in a fired multitubular reactor for the production of heat or internal heat; Crude oil refining machines; boiler tubes; blowers for the suction, compression and transport of gases; heat exchangers [machine parts]; platforms for loading furnaces
11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; heat accumulators; steam accumulators; acetylene burners; acetylene generators; hot air apparatus; air cooling apparatus; air filtering apparatus; air reheaters; air driers; feeding apparatus for heating boilers; structural plates for ovens; coolers for furnaces; petrol burners; gas burners; burners; apparatus for loading furnaces; air valves for steam heating installations; heating apparatus for solid, liquid or gaseous fuels; heating installations; distillation columns; gas condensers [other than parts of machines]; control and safety accessories for gas pipes; heating elements; distillation apparatus; heat exchangers; gas scrubbing apparatus; evaporators; filters [parts of industrial facilities]; furnaces [except for experimental furnaces]; shaped fittings for furnaces; furnace grids; ovens [except for experimental ovens]; refrigerating apparatus and machines; control and safety accessories for gas apparatus; steam generators [other than parts of machines]; cooling installations for liquids; refining towers for distillation; water heaters [apparatus]; heat regenerators; cooling apparatus and facilities; pressurized water tanks; level controlling valves in tanks; coils [parts of distilling, heating or cooling installations]; safety accessories for water or gas apparatus and pipes; boiler pipes [tubes] for heating installations; flare stacks [oil industry]; steam generating installations; Burning installations for the petro-chemical, petroleum and gas industries; refinery heaters and refinery burners; industrial burners; burners for industrial furnaces; burner assemblies; air gas mixing devices for burners and air heating systems comprised primarily of ducts, pipes, and heater manifolds through which heated air or gaseous streams pass or circulate