37 [ Construction of compressed air generation systems, compressed air distribution systems and compressed air treatment systems; installation, repair, maintenance and care of pipes, air ducts, pipe collars, pipe junctions, pipe elbows, cables and wires, air tanks and reservoirs, pipe flanges, machinery, machine tools, compressors, air compressors, blowers, pumps, vacuums, valves, hoses and filters, motors, turbines, pneumatic tools and controls, filters, catalytic converters, condensate separators, radiators, condensers, de-aerators, oil separators and de-oilers, compressed air main charging systems, regulators, speed governors, electricity generators, machine housings, leveling mounts, stands and tables for machines, couplings and drive belts, gear boxes, ball-bearings, cranks, crank shafts, machine wheels and axles, pump diaphragms, superchargers, turbo compressors, fans, anti-pollution devices, heat exchangers, safety valves, regulating valves, air reservoirs, remote control and regulating devices, hydraulic controls and regulators, mechanical controls and regulators, electric and electronic controls and regulating devices, integrated circuits, measuring devices, automatic time switches, automatic weighing machines, data processing and acquisition equipment, computers, computer hardware, computer output equipment, data transmission devices, electric control panels, sensors, devices for the recording, transmission and reproduction of sound, images and data, electric circuits, compressed air conditioning and treatment apparatus, air separators, air filtering installations, air purifying apparatus, air dryers, refrigerating compressed air dryers, desiccant compressed air dryers, refrigerating apparatus, air cooling apparatus, condensate drains, condensate water purification and filtration units, germicidal air purifying lamps, air sterilization apparatus, faucets, installations for controlling the flow of gases, compressed air reservoirs and pipeline spigots; installation services relating to apparatus, devices and installations for compressed air generation, compressed air distribution and compressed air treatment; installation and repair of compressors and compressor installations; plumbing; installation, maintenance and repair of machines for and in connection with compressed air generation, compressed air distribution and compressed air treatment; cleaning of compressors and compressed air installations; installation and repair of pipes, namely, of pressure pipes; rental of compressed air machines; rental of installations and devices for the generation, conduction, storing, release and treatment of compressed air ]