Evacuated heat pipe solar collectors (heat exchangers); solar energy collectors for heating; solar energy powered heating apparatus; solar energy powered heating installations; solar heating apparatus; solar heating panels; solar panels for use in heating; solar thermal collectors (heating); solar thermal collectors for heating; supports adapted for use with solar heating tubes; thermal storage apparatus (solar energy) for heating; thermal storage instruments (solar energy) for heating; douches (showers); hand showers; heads for showers; heaters for shower baths; outdoor showers for bathing; portable showers; shower heads; shower heads being parts of water supply installations; shower hoses; shower mixers; shower mixing valves; shower mounting devices; shower panels; shower units; shower valves; showers; showers for sale in kit form; spray fittings (parts of shower installations); spray handsets for showers; spray heads for showers; spa baths; spa baths (vessels); apparatus for filtering water; apparatus for producing hot water; apparatus for purifying water; apparatus for the decontaminating water; apparatus for the supply of hot water; apparatus for water heating; apparatus for water purification; filtering installations for water; filters for drinking water; filters for sanitary water distribution apparatus; filters for use with apparatus for water supply; filters for water purifiers; filters for water release devices; hot water apparatus; hot water bottles; hot water heaters; hot water supply heaters; installations for cooling drinking water; installations for purifying water; machines for processing (purifying) water; machines for purifying water; machines for the treatment (purification) of water; machines for use in the processing (purification) of water; machines for water filtering (purifying); portable filtration apparatus for filtering water (other than machines); pressure relief apparatus for use with water heaters; shower heads being parts of water supply installations; ultraviolet water sterilisation units; water therapy apparatus, other than for medical use; water treatment apparatus