Apparatus and installations for water supply and sanitary purposes; fittings associated with water supply and sanitary purposes and parts therefor; showers; shower fittings and apparatus; shower heads; shower hoses; shower installations; shower mixers; mixing valves for sanitary installations; shower mounting devices; shower panels; shower pans; shower roses; shower taps; shower trays; shower valves; spray fittings (parts of shower installations); stoppers and strainers for use with sinks, baths and showers; valves (faucets) being parts of sanitary installations; sanitary installations, namely, extendible and fixed shower arms, handles and rails; laundry and shower arms, being extendible, folding or fixed taps, tap spouts and nozzles; taps and tapware; filters and filtering apparatus for sanitary installations; parts and fittings for all of the aforementioned products