METAL TUBES AND FITTINGS FOR BUILDING PIPING NETWORKS, RIBBED TUBES MADE OF METAL; METAL TANKS FOR STORING OIL AND BENZINE AND STRUCTURAL PARTS THEREFOR AND METAL TANK MOUNTINGS THEREFOR; CHIMNEYS MADE OF CHROMIUM-NICKEL STEEL

PUMPS AND FANS AND ELECTRICAL MOTORS, AND GAS GENERATORS FOR USE IN HEATING, DRYING, VENTILATING AND AIR CONDITIONING PLANTS

MEASURING, CONTROL AND MONITORING INSTRUMENTS FOR HEATING, DRYING, VENTILATING AND AIR CONDITIONING SYSTEMS, ELECTRICAL AND ELECTRONIC REGULATING AND CONTROL UNITS FOR HEATING, DRYING, VENTILATING AND AIR CONDITIONING SYSTEMS, THERMOSTATS, THERMOMETERS, MANOMETERS, DRAFT CONTROLLERS FOR CHIMNEYS, LIQUID LEVEL INDICATORS, OVERFLOW SAFETY AND LEAK SAFETY UNITSFOR LIQUID FUEL TANKS; FILTERING AND DELLIMING UNITS FOR HEATING SYSTEMS, FOR WATER HEATERS AND FOR SWIMMING POOLS, REGULATING VALVES

BOILERS FOR LIQUID, GASEOUS AND SOLID FUELS, STEAM PRODUCING BOILERS, FUEL OR ELECTRICAL CENTRAL HEATING BOILERS, COMBINATION FUEL OR ELECTRICAL HEATING BOILERS FOR CENTRAL HEATING AND HOT WATER PREPARATION, FUEL OR ELECTRICAL WASTE INCINERATION BOILERS AS WELL AS PARTS THEREFOR; COOKING STOVES COMBINED WITH A CENTRAL HEATING BOILER; WATER HEATERS FOR HOT WATER SUPPLY SYSTEMS AND PARTS THEREFOF, HEAT EXCHANGERS FOR REMOTE CENTRAL HEATING SYSTEMS AND PARTS THEREOF; ELECTRICAL HEATING UNITS FOR ROOM HEATING AND FOR PRODUCING HOT WATER AND PARTS THEREOF; HEAT PUMP HEATING UNITS AND PARTS THEREOF; SOLAR COLLECTOR UNITS AND PARTS THEREOF; OIL AND GAS BURNERS AND PARTS THEREOF, SOUND INSULATORS FOR BURNERS; FLUE GAS SOUND ABSORBERS, FLUE GAS FILTERING UNITS; EXPANSION VESSELS, CHECK OR SHUT-OFF VALVES, MIXING VALVES, CONVECTORS, RADIATORS, RADIATION HEATERS FOR DOMESTIC AND INDUSTRIAL HEATING PURPOSES, HEATING COILS; VENTILATING AND AIR CONDITIONING UNITS AND PARTS THEREOF; NAMELY AIR HEATERS, AIR COOLERS, AIR FILTERS, SOUND INSULATORS, HEAT RECOVERY HEAT EXCHANGERS FOR VENTILATING AND AIR CONDITIONING SYSTEMS; WATER FILTERING AND WATER DELIMING UNITS FOR HEATING SYSTEMS, FOR WATER HEATERS AND FOR SWIMMING POOLS; CLARIFIERS FOR PURIFYING EFFLUENTS, COMPACT WASTE PURIFICATION UNITS AND PARTS THEREOF; FILTER UNITS FOR FILTERING PULP LIQUORS, SETTLING FILTER UNITS