6
Water-pipe valves of metal; Valves of metal, other than parts of machines; Drain traps [valves] of metal; Non-return flaps of metal [other than parts of machines]; Penstock pipes of metal; Couplings of metal for tubing; Tubes of copper alloys; Fittings of metal for pipes; Collars of metal for fastening pipes; Metal pipe supports; Pipe nuts of metal; Elbows of metal for pipes; Fittings of metal for pipes; Clips of metal for tubes; Manifolds of metal for pipelines; Ducts of metal for housing ventilation pipes; Flanges of metal [collars]; Flanged pipes of metal; Metal vent covers for HVAC ducts; Manually operated metal valves; Metal pulleys, springs and valves [not including machine elements]; Pipes, tubes and hoses, and fittings therefor, including valves, of metal; Valves of metal other than parts of machines including those from alloy steel and titanium; Valves of metal, other than parts of machines; Valve assemblies of metal [other than parts of machines]
7
Valves (Clack -) [parts of machines]; Valves [parts of machines]; Power operated valves; Valves for pumps; Valves (Clack -) [parts of machines]; Valves (Clack -) [parts of machines]; Lockable valves [parts of machines]; Actuators for valves; Valves operated by changes in pressure; Valves operated automatically by hydraulic control; Pneumatically operable valves; Sludge cocks [valves] being parts of machines; Pressure controllers [valves] being parts of machines; Portable filtration units [machines]; Filters being parts of machines or engines; Fittings for engine boilers; Ball valves being parts of machines; Valve diaphragms; Membrane filters for use as parts of machines; Shutter valves; Stop valves [parts of machines]; Non-return valves of metal [parts of machines]; Non-return valves of metal [parts of machines]; Pressure regulators [parts of machines]; Condensate separators; Air-cooled condensers; Traps for dust [part of machines]; Steam boilers for steam generating [parts of machines]; Separators for liquids; Liquid aerators (parts of machines)
9
Valves (Remote controls for automatically operating -); Solenoid valves [electromagnetic switches]; Thermostatically controlled valves; Valves (Electronic controls for automatically operating -); Conductivity meters; Electrical circuits and circuit boards; Circuit boards provided with integrated circuits; Measuring apparatus; Measuring apparatus; Digital measuring apparatus; Measuring devices, electric; Meter testing apparatus; Acoustic meters; Volumetric measuring apparatus; Electromagnetic measuring detectors; Measuring buckets; Measuring cups; Pitot tubes; Measuring instruments; Fire-extinguishing systems; Fire-extinguishing apparatus; Valve operators [electric controls]; Pressure indicator plugs for valves; Pressure measuring apparatus; Control boxes (Electric -); Electrical switch cabinets; Boiler control instruments; Oil level indicators; Floating switches; Heat regulating apparatus; Level switches; Level controllers [electrical apparatus]; Viscosity regulating systems; Mechanical temperature regulators; Thermometers; Liquid samplers; Sampling valves; Melt sampling devices; Solid sampling devices; Liquid sampling devices with sample cooling function; Gas sampling devices; Piston samplers; Screw samplers; Hand-operated solid samplers
11
Filters for cleaning air; Filters for water purifiers; Dust filters; Filters for fume extractors; Filters for sanitary water distribution apparatus; Strainers for water lines; Filters for use with apparatus for water supply; Filters for drinking water; Filters for air purifiers; Filters for refrigeration systems; Filters for industrial installations; Filter elements for the air vents of water supply tanks; Industrial installations for filtering liquids; Filters for use with apparatus for air conditioning; Filter boxes for water purification; Valves being part of sanitary installations; Valves [plumbing fittings]; Valves for air conditioners; Filters for air extractor hoods; Fittings for flues; Taps [faucets]; Stop valves being safety apparatus for water apparatus; Mixer taps [faucets]; Float valves [ball cocks]; Ball valves; Membranes for the filtration of water; Stop valves for regulating water; Mixer taps for water pipes; Steam valves; Steam driers; Steam superheaters [for industrial purposes]; Air valves for steam heating installations; Valves being parts of sprinkler systems; Mechanisms for controlling fluid level in tanks [valves]; Level regulating apparatus for tanks
42
Engineering services; Calibration [measuring]; research in mechanical field; Research and development (for others); Software as a service [SaaS]; Programming of electronic control systems