APPARATUS FOR LIGHTING, HEATING, STEAM GENERATING, COOKING, REFRIGERATING, DRYING, VENTILATING, WATER SUPPLY AND SANITARY PURPOSES, NAMELY, ELECTRIC HEATERS, CIRCULATORS, RADIATORS, BOILERS; CLOTHES DRYING MACHINES AND FILTERS; REGULATING ACCESSORIES FOR WATER SUPPLY, NAMELY, AIR VALVES AND METERED VALVES, PRESSURE REGULATORS FOR WATER INSTALLATIONS; SHOWER OR TAP NOZZLES, BATHTUBS, WHIRLPOOL BATHS AND BATH INSTALLATIONS, BATH PLUMBING FITTINGS, NAMELY, BIBS, COCKS, TRAPS AND VALVES, FAUCETS, FLEXIBLE PIPES BEING PART OF BATH PLUMBING INSTALLATIONS; SHOWERHEAD SPRAYER, PARTS AND ACCESSORIES, MASSAGERS, WATER PIPES, HANDLERS, REGULATORS, SHOWERHEADS AND SHOWERHEAD SPRAYERS, HOUSEHOLD AIR CLEANERS, DOMESTIC WATER FILTERING UNITS