Apparatus for water supply and sanitary purposes; bathtubs, bathtubs for sitz baths, baths (spa) [vessels], bidets, seats (toilets), showers, sinks, sitz baths, toilet seats, toilet bowls, toilets (water closets), wash-hand basins (part of sanitary installations), wash-hand bowls, washing coppers, hand drying apparatus for washrooms, water supply installations, watering installations, water intake apparatus, water distribution installations.