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; fuel cells and reformers therefor; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; 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