6 Valves and water-pipes of metal.
11 Water filtering apparatus, regulating and safety accessories for water apparatus, water intake apparatus, water softening apparatus and installations, water distribution and supply installations, pressure water tanks, level controlling valves in tanks; filters (parts of household or industrial installations), filters for drinking water, hydrants, parts and/or accessories and/or spare parts for the aforementioned goods included in this class.
17 Goods made of plastic substances, semi-processed, flexible hoses, not of metal, pipe gaskets, pipe muffs, not of metal, watering hose (hose pipes), valves of India rubber or vulcanised fibre, sheets of plastic materials for agricultural purposes, filtering materials (semi-processed foams or films of plastic), stuffing of rubber or plastic, packing (cushioning, stuffing) materials of rubber or plastics, threads of plastic for soldering, fibres and threads of plastic materials, not for textile use, and plastic film, not for wrapping, insulators for railways tracks.
20 Valves, not of metal, other than parts of machines, water-pipe valves and drain taps (valves) of plastic, packaging containers of plastic, pipe or cable clips or plastics, cases of wood or plastic, cable clips, not of metal.
21 Sprinkling devices and parts and components and accessories for these included in this class; drippers and microsprinklers, nozzles for sprinkler hoses, sprinklers, spouts, sprinklers for watering flowers and plants and strainers for household purposes.