6
Ducts of metal for heating, ventilating and air-conditioning installations; valves of metal (other than parts of machines)
7
Valves (parts of machines) and valve boxes being parts for valves, included in class 7
9
Electric or electronic control apparatus for vehicle heating and air-conditioning apparatus, fittings for the aforesaid goods and for vehicle heating and air-conditioning apparatus, namely remote controls, electric and electronic controls, switches, timer switches,(other than for movements for clocks and watches), solenoid valves and electric fuses; fuels cells and reformers therefor; apparatus and instruments for conduction, distribution, conversion, storage, regulation or control of electric current; electric switching devices for energy supplying; meters, in particular flow meters, level meters for liquid containers, ultrasound measuring apparatus; level meters for gas cylinders
11
Vehicle heating, ventilating and air-conditioning apparatus, fittings for the aforesaid goods, namely burners, filters, gas lighters, gas condensers (other than parts of machines), air-conduction elements, regulating devices for gas apparatus, pipelines, heat exchangers, air intake and blow-out scoops, silencers and contact-proof devices, specially adapted for vehicle heating, ventilating and air-conditioning apparatus; heating elements; apparatus for lighting, heating, cooking and drying, and heating systems, in particular for gaseous and liquid fuels, and valves and fittings therefor; ventilators and air blowers for ventilating, heating and air-conditioning installations, in particular for such installations in vehicles; water heaters; water heaters operated with gaseous or liquid fuels; water filters, water treatment plants, water distribution installations, conduits for sanitary installations, water conduit installations; fittings for gas installations, gas lamps and oil installations; gas and oil burners, including for industrial furnaces; gas pipelines, oil pipelines, fittings for gas pipelines and oil pipelines; gas pressure adjusters, in particular for use in camping and vehicles; gas fittings, gas and oil burners, including for industrial furnaces; regulating and safety accessories for water or gas apparatus and pipes; relief valves and level controlling valves for gas, water and oil tanks; thermostatic valves
12
Tow-dollies and auxiliary travelling gear for caravans
19
Ducts, not of metal, for heating, ventilating and air-conditioning installations; valves, not of metal or plastic
20
Valves of plastic for heating, ventilating and air-conditioning installations
37
Installation, maintenance and repair of heating, ventilating and air-conditioning installations, in particular for vehicles