[Class : 11] Heat Exchangers; Intercoolers; Heat Recuperators; Heating Apparatus; Heat Pumps; Apparatus For Heating, Lighting, Steam Generating, Cooking, Refrigerating, Drying, Ventilating, Water Supply And Sanitary Purposes; Ventilation Hoods; Taps For Piping; Distillation Columns; Water Heaters; Cold Storage Rooms