11 Apparatus for lighting, namely automatically operated electric lighting apparatus for use in the fields of electronics, engineering, condensate technology and process engineering; apparatus for heating, namely electric heating fans, hot-air space heating apparatus, hot-water space heating apparatus, heat exchangers other than parts of machines, heating units for industrial purposes, heat generators, heating systems composed primarily of tubes, pipes and pre-assembled manifolds through which cold or low temperature water circulates; apparatus for steam generating, namely steam generators, steam valves, steam radiators for heating buildings; apparatus for refrigerating purposes, namely refrigerating machines and installations, refrigerating cabinets, refrigerator condensers, cooling evaporators; drying apparatus for use in heating, ventilation systems, air conditioning systems and refrigeration systems; apparatus for ventilating purposes, namely ventilating exhaust fans, ventilating fans for commercial and industrial use, ventilation hoods, compressed air ventilation systems; apparatus for water supply purposes, namely valves, metered valves, filters being parts of industrial installations, water filters, industrial dryers for heating and dehumidifying; water treatment plants for purification of the water for commercial or industrial use; drying modules for compressed air and compressed gas for use in heating, ventilation systems, air conditioning systems and refrigeration systems; drying modules used for the removal of solid, liquid and vapor contaminants from compressed air and compressed gases; plumbing apparatus for draining condensate from pressurized gas lines or containers; apparatus for the separation of liquid mixtures in their constituents, especially oil-water-mixtures for the cleaning and purification of liquids; taps for water pipes; pipes' taps in the nature of faucets; taps for pipes used in heating, ventilation systems, air conditioning systems and refrigerating systems; electrical dryers for treating compressed air