11 Installations and apparatus for lighting, heating, cooking, refrigerating, drying, ventilating, air conditioning, water supply, sanitary purposes, gas separation, gas storage, waste destruction or disposal; incinerators; heat accumulators; anti-dazzle devices for automobiles; cooling and freezing apparatus; central heating radiators; electric bulbs, lamps and discharge tubes; distillation apparatus and columns; dust exhausting and removing installations for industrial purposes; flare stacks; flues; fuel economisers; gas burners; germicidal burners; heat exchangers; heat pumps, pasteurisers; petrol burners; radiator caps; radiators; regulating and safety accessories for water, gas or oil apparatus and pipes; solar collectors for heating; solar furnaces; electric torches; level controlling valves for use in tanks; air-freshening apparatus for automobiles aircraft and boats; components and assemblies included in this class for use in the manufacture of apparatus for cooking, refrigerating, freezing, air conditioning ventilating, heating, lighting, washing and drying of clothes, dishes, cutlery and cooking utensils, water supply, bathing, waste disposal and sanitary purposes