Chemicals for use in purification of water; chemical products for preventing scale

Common metals and their alloys; transportable buildings of metal; metal railway tracks and fittings therefor; non electric cables and wires of common metal; pipes of metal; safes of metal; iron ores; bottles of metal and containers of metal, for compressed gas or liquid air; general purpose containers of metal, under pressure; containers of metal for gases, fluids and liquids under pressure; valves and sluices of metal, other than parts of machines, for use with gases and liquids; taps of metal, for casks and for bottles; taps of metal, for casks and for bottles, with integrated pressure reducer; caps and tops of metal, for bottles; washers of metal; junctions of metal for pipes; pipes of metal; pipe sleeves of metal; clips and clamping rings or clamps of metal; check valves of metal and bends of elbows of metal for pipes; tanks of metal; steel tubes and pipes; advertisement columns of metal; reinforcing materials of metal for pipes and tubes; collars of metal for fastening pipes; clips of metal for cables and pipes; stop collars of metal; barrels of metal; casks of metal; sealing caps of metal; bolts of metal; shackles and hooks of metals for handling loads; flanges or collars of metal; bronze; manifolds of metal for pipelines; cask stands of metal; penstock pipes and high pressure pipelines of metal; ring-shaped fittings of copper; branching pipes of metal; tin ores; brass, unwrought or semiwrought; pipe muffs of metal; containers of metal for storing acids; containers of metal for liquid fuel; storage tanks of metal; barrels of metal; pipes of metal; pipework of metal; valves of metal, other than parts of machines; screws of metal; non-mechanical reels of metal, for use with flexible hoses, namely, spring-retracted metal hose reels; non-mechanical drums of metal for use with flexible hoses, namely, metal storage drums and steel drums sold empty

motors and engines, except those for land vehicles; machine couplings and transmission components, except for land vehicles; pressure reducers being parts of machines; valves and taps, being parts of machines, engines or motors; valves and taps, being parts of machines for use in life support equipment and in survival rooms or chambers; pressure regulators, being parts of machines; pneumatic controls for machines, motors and engines, namely, pneumatic controlled taps; pneumatic controlled taps for use in industrial applications; pneumatic tap openers and closers being parts of machines; power operated mechanical reels and drums for flexible hoses

Checking apparatus and instruments, namely, technical measuring, testing and checking apparatus and instruments for measuring, testing and checking the temperature, pressure, quantity and concentration of gas and liquids; metering apparatus, namely, gauges and gas or liquid level indicators, quantity indicators; measuring apparatus and instruments, namely, gasometers and gas sensors for measuring gas concentration, level measuring machines for surveying and pressure measuring apparatus; pressure indicators; electric regulating apparatus, namely, control valves for regulating the flow of gases and liquids; pressure indicator plugs for valves; electric batteries; electric or electronic sensors for checking the temperature, pressure, quantity and concentration of gas and liquids; liquid or gas level gauges; rotating signalling devices, namely, light signals and flashing light signals; electronic notice boards; electric and electronic switching apparatus and devices for monitoring, controlling and switching hydraulic or pneumatic systems; range finders or telemeters

Installations, apparatus and accessories for sanitary purposes, namely, water supply installations and apparatus, water purifying installations and apparatus, air purification units, drinking water filters, taps, cartridges for the purification of water, water filtration and purification units, and replacement cartridges and filters for such units; installations for producing mineral and aerated water; refrigerating shelves and refrigerators; cooling installations for water; refrigerating shelves and refrigerators including a water distribution installation; refrigerating shelves and refrigerators including a cooling installation for water and drinks; water conduits installations; water sterilizers; water filtering apparatus and installations; filters, being parts of household or industrial installations; water intake apparatus; water softening apparatus and installations; sterilizers; gas generators; safety devices and regulating accessories for water or gas apparatus and pipes; pressure water tanks; level controlling valves in tanks; thermostatic valves being part of heating installations