Apparatus for heating, steam generating, refrigerating, drying, ventilating, water supply apparatus and sanitary installations; water heating installations, solar installations (included in this class), water treatment installations, mixing valves as parts of sanitary installations, manually and automatically operated plumbing fittings for water supply and water drain, mixer taps for wash stands, bidets, sinks, bath tubs and shower tubs; showers and shower cabins, bath and shower combination installations, overhead showers, lateral showers, nozzles as parts of sanitary installations, shower holders; pre-assembled multifunctional showers; baths, massage baths, bubble baths, whirlpool baths; supply and discharge fittings for sanitary basins, wash stands, sinks, bidets, bath tubs and shower tubs; siphons (traps), water supply and discharge pipes; lighting installations; parts of the aforesaid goods; casings and coverings essentially made of metal as parts of sanitary installations