OK 10

Heating, cooling, and water supply devices, and sanitary equipment; expansion reservoirs for central heating systems, pressurized water reactors, filters as parts of domestic or industrial systems, water filtration devices, armature taps, heating systems, cooling systems, pipes as parts of sanitary equipment, mixing cocks for water pipes, control accessories for water devices and for water pipes, solar collectors, heat reservoirs, thermostatic valves as parts of heating systems, heat exchangers