11 Heating and steam producing apparatuses and machines, for constructions for power plant engineering and combustion technology, consisting of heat exchangers, burners in the nature of gas and solid fuel burners for industrial use, acetylene burners, separators for steam heating systems that are not automatically operated for cleaning and purification of gases and air, furnaces, hot gas generators; air, water and gas filters for industrial installations, waste heat boilers, pre-heaters in the nature of hot-air space heating apparatuses, spinning air pre-heaters in the nature of electric and gas and solid fuel heating fans, heating surfaces in the nature of gas, water, fluid, solid fuel and electrical heated surfaces for industrial purposes, namely, power generation. gas condenser in the nature of separators for the cleaning and purification of gases, cooling plant in the nature of cooling domes, water cooling towers, evaporators, fan systems for wall ovens, chillers, namely, peltier cooling and heating apparatus, pipe freezing unit comprised of cooling aggregates with refrigerant hoses and deep freezer heads, chemical, nuclear and heating reactors for power generation, superheaters for power generation, namely, part of steam boiler apparatuses overheating water steam above evaporating temperature, ventilators for climatisation, burner valves in the nature of steam and thermostatic valves apparatuses for gas reduction in the nature of separators for the cleaning and purification of gases, gas-oil-combination-burner and gas surface burners for industrial, commercial and domestic use, fumes purification plants and their components, namely, separators for the cleaning and purification of gases, water and wastewater reprocessing and conditioning plants, and parts thereof for wastewater treatment, namely, chemical and biological sterilization units, reverse osmosis filtration units