7
Boiler fittings, water heaters, water regulators, steam traps, steam-valves and steam cocks, all being parts of machinery; switching apparatus for pumps; mechanical flow control installations; machines and parts thereof for feeding boilers, flexible connectors, ducting and seals, metallic clamps and coupling all for use in aviation, off-shore and marine applications
9
Scientific, nautical, surveying, optical, measuring, signalling, recording, checking and indicating apparatus and instruments; controlling and alarm apparatus and instruments for the supervision of fluids in industrial and scientific processes and in water installations; apparatus for automatic operation of switches, bells, lamps and motors; indicators for indicating flow, depth, distance, speed, time, liquid and gas levels; liquid and gas flow instrumentation and apparatus; flow control installations; flow gauges; flow meters; electrical and electronic switches and sensors; differential gauge pressure transmitters; hydrostatic pressure transmitters; contents gauges and computer software and hardware
11
Installations, apparatus and instruments for heating, steam generating, drying, ventilating and water supply; installations (not being machines) for feeding boilers and parts thereof; steam cocks (not being parts of machines); steam boiler fittings (not included in other classes and not being parts of machines); and washers and steam driers for use in water supply installations
37
Installation, repair and maintenance services; information, advisory and consultancy services relating to the aforesaid, including such services provided on-line from a computer network and/or via the internet and/or extranets