| Subclass 01 | Fluid distribution equipment |
| A0032 | Adapters for pipe joints | A0050 | E0155 |
| A0155 | Anti-splash nozzles for taps | B0501 | V0261 |
| B0027 | Bags (Douche –) | O0094 | V0265 |
| B0119 | Bases (Tap –) | E0128 | C0111 |
| C0211 | Casings (Tap –) | B0294 | C0100 |
| C0514 | Cocks and taps | R0244 | C0110 |
| C0527 | Coiled pipes [parts of appliances] | S0173 | C0224 |
| C0613 | Connecting devices for gas bottles | R0007 | C0113 |
| C0615 | Connections for flexible piping (Extensible –) | R0009 | R0135 |
| C0636 | Control handles for taps | P0529 | S0223 |
| D0020 | Decanting fluids (Siphons for –) | S0259 | S0452 |
| D0234 | Douche bags | O0094 | V0265 |
| D0252 | Drainpipes, not for walls | D0238 | S0396 |
| D0312 | Drinking fountains | F0204 | I0099 |
| F0036 | Faucet handles | C0611 | C0104 |
| F0037 | Faucets | R0239 | V0241 |
| F0106 | Filters (Water –) | F0140 | V0271 |
| F0122 | Fire hose nozzles | L0066 | S0532 |
| F0123 | Fire hoses | T0425 | T0493 |
| F0124 | Fire hydrants | I0028 | T0472 |
| F0201 | Flexible pipes | T0437 | R0136 |
| F0245 | Fluid distribution equipment | D0198 | F0246 |
| F0297 | Fountains (Street –) | B0369 | U0042 |
| G0047 | Gas (Apparatus for supply of –) | D0199 | G0019 |
| G0048 | Gas bottles (Connecting devices for –) | R0007 | C0113 |
| G0060 | Gates (Sluice –) | V0016 | Z0069 |
| G0161 | Gratings for down pipes (Leaf –) | G0174 | L0117 |
| G0215 | Gutters | G0139 | C0124 |
| H0064 | Handles (Faucet –) | C0611 | C0104 |
| H0260 | Hoses (Fire –) | T0425 | T0493 |
| H0287 | Hydrants | P0781 | T0473 |
| H0288 | Hydraulic output regulators | R0147 | H0184 |
| J0031 | Joint rings for tubes and pipes | R0251 | T0395 |
| J0032 | Joints for pipes | R0008 | C0220 |
| J0033 | Joints (Pipe and plate packed –) | J0049 | T0397 |
| L0087 | Leaf gratings for down pipes | G0174 | L0117 |
| M0214 | Mixing taps | R0243 | K0289 |
| N0063 | Nozzles (Fire hose –) | L0066 | S0532 |
| N0064 | Nozzles for taps (Anti-splash –) | B0501 | V0261 |
| N0066 | Nozzles (Water hose –) | L0064 | S0535 |
| P0013 | Packing rings for tubes and pipes | R0251 | T0395 |
| P0245 | Pipe and plate packed joints | J0049 | T0397 |
| P0256 | Pipes (Flexible –) | T0437 | R0136 |
| P0258 | Pipes of concrete or cement | T0435 | B0081 |
| P0261 | Pipes (Stove –) | T0429 | K0170 |
| P0264 | Piping (Rigid –) | T0440 | M0135 |
| P0444 | Pressure reducers for gas | D0117 | N0100 |
| P0523 | Purifiers (Water –) | P0840 | V0263 |
| R0129 | Reducers (Pressure –) [pipe fittings] | M0067 | N0099 |
| R0215 | Rigid piping | T0440 | M0135 |
| R0224 | Rings (Joint or packing –) for tubes and pipes | R0251 | T0395 |
| R0281 | Roses (Suction –) | C0998 | S0590 |
| S0025 | Safety valves for cisterns | V0014 | B0150 |
| S0400 | Siphons for decanting fluids | S0259 | S0452 |
| S0485 | Sluice gates | V0016 | Z0069 |
| S0486 | Slurry tanks | R0194 | I0084 |
| S0621 | Sprinklers (Lawn –) | T0298 | P0118 |
| S0622 | Sprinklers (Water –) | A0307 | Ö0028 |
| S0785 | Stove pipes | T0429 | K0170 |
| S0809 | Street fountains | B0369 | U0042 |
| S0842 | Suction roses | C0998 | S0590 |
| T0060 | Tanks for gaseous or liquid substances | R0190 | G0018 |
| T0063 | Tanks (Slurry –) | R0194 | I0084 |
| T0064 | Tap bases | E0128 | C0111 |
| T0065 | Tap casings | B0294 | C0100 |
| T0078 | Taps | R0239 | V0241 |
| T0079 | Taps and cocks | R0244 | C0110 |
| T0080 | Taps (Control handles for –) | P0529 | S0223 |
| T0177 | Thermostatic mixers | M0158 | T0269 |
| V0014 | Valves (Safety –) for cisterns | V0014 | B0150 |
| V0015 | Valves [taps] | V0015 | C0109 |
| W0048 | Washing nozzles | L0065 | V0254 |
| W0079 | Water filters | F0140 | V0271 |
| W0083 | Water hose nozzles | L0064 | S0535 |
| W0087 | Water purifiers | P0840 | V0263 |
| W0092 | Water softening apparatus | A0053 | V0255 |
| W0093 | Water sprinklers | A0307 | Ö0028 |
| W0104 | Waterspouts | G0134 | V0256 |
| Subclass 02 | Sanitary appliances |
| A0033 | Adapters (Toilet seat –) for babies | R0126 | W0012 |
| B0012 | Baby baths | B0030 | B0003 |
| B0122 | Basins (Lavatory –) | L0084 | M0228 |
| B0140 | Bath appliances (Hot air –) | B0036 | L0174 |
| B0143 | Bath tubs | B0028 | F0367 |
| B0149 | Bathroom shelves [other than furniture] | T0057 | F0376 |
| B0150 | Baths (Baby –) | B0030 | B0003 |
| B0153 | Baths equipment (Steam –) | B0037 | G0107 |
| B0231 | Bidets | B0217 | B0125 |
| B0527 | Brush holders (Lavatory- –) | P0619 | W0005 |
| C0011 | Cabinets (Shower –) | C0005 | Z0048 |
| C0014 | Cabinets (Turkish bath –), portable | C0010 | H0243 |
| C0264 | Cesspools, fixed or movable | F0222 | R0114 |
| C0409 | Cisterns (Flushing –) | R0192 | Ö0003 |
| D0019 | Decanting apparatus for waste water | D0017 | S0395 |
| D0053 | Deodorant holders [for sanitary equipment] | S0414 | D0034 |
| D0150 | Dispensers (Soap –) | D0195 | S0252 |
| D0152 | Dispensers (Toilet paper –) | D0191 | W0008 |
| D0153 | Dispensing cabinets (Towel –) | D0196 | T0411 |
| D0253 | Drains (Sink –) | B0356 | M0243 |
| F0212 | Floats (Water-closet outlet –) | F0189 | U0027 |
| F0248 | Flushing cisterns | R0192 | Ö0003 |
| F0249 | Flushing systems for water closets | C0401 | W0007 |
| G0093 | Glass holders [for bathroom] | P0697 | F0379 |
| H0191 | Holders (Deodorant –) [for sanitary equipment] | S0414 | D0034 |
| H0219 | Holders (Soap –) | P0688 | S0254 |
| H0264 | Hot air bath appliances | B0036 | L0174 |
| I0106 | Isolation tanks [for relaxation] | C0065 | E0141 |
| L0068 | Latrines | L0081 | L0043 |
| L0075 | Lavabos | L0085 | K0409 |
| L0076 | Lavatory basins | L0084 | M0228 |
| L0078 | Lavatory-brush holders | P0619 | W0005 |
| L0192 | Liquid soap dispensers | S0084 | F0251 |
| N0013 | Napkin holders [sanitary equipment] | P0689 | E0035 |
| O0068 | Overflows | T0386 | T0438 |
| P0340 | Plugs for sinks | B0395 | M0239 |
| P0524 | Purifying installations (Water –) | E0239 | V0262 |
| S0047 | Sanitary installations | S0057 | E0025 |
| S0049 | Sanitary units [including for hospitals] | B0263 | E0024 |
| S0062 | Saunas | S0069 | S0259 |
| S0155 | Seat covers (Toilet –) | C0946 | W0011 |
| S0162 | Seats (Toilet –) | S0229 | W0013 |
| S0183 | Septic tanks | F0223 | S0398 |
| S0196 | Sewer traps | S0258 | S0397 |
| S0257 | Shelves (Bathroom –) other than furniture | T0057 | F0376 |
| S0331 | Shower cabinets | C0005 | Z0048 |
| S0334 | Shower trays | B0008 | Z0053 |
| S0335 | Showers | D0226 | Z0049 |
| S0338 | Showers (Spray heads for –) | P0573 | Z0050 |
| S0393 | Sink drains | B0356 | M0243 |
| S0394 | Sink strainers | P0571 | M0245 |
| S0395 | Sink units | B0264 | M0240 |
| S0397 | Sinks | E0337 | M0242 |
| S0398 | Sinks (Plugs for –) | B0395 | M0239 |
| S0507 | Soap dispensers | D0195 | S0252 |
| S0508 | Soap holders | P0688 | S0254 |
| S0609 | Spray heads for showers | P0573 | Z0050 |
| S0711 | Steam baths equipment | B0037 | G0107 |
| S0796 | Strainers (Sink –) | P0571 | M0245 |
| S0844 | Sudation apparatus, non medical | S0397 | I0103 |
| T0062 | Tanks (Septic –) | F0223 | S0398 |
| T0241 | Toilet paper dispensers | D0191 | W0008 |
| T0242 | Toilet paper holders | P0659 | W0009 |
| T0243 | Toilet seat adapters for babies | R0126 | W0012 |
| T0244 | Toilet seat covers | C0946 | W0011 |
| T0246 | Toilet seats | S0229 | W0013 |
| T0291 | Towel dispensing cabinets | D0196 | T0411 |
| T0333 | Traps for sanitary apparatus | S0257 | S0451 |
| T0422 | Tubs (Bath –) for sitz-baths | B0029 | K0167 |
| T0440 | Turkish bath cabinets, portable | C0010 | H0243 |
| U0024 | Urinals [public] | U0006 | I0011 |
| W0036 | Washbasins | L0084 | M0228 |
| W0039 | Wash-hand basins | C1067 | K0408 |
| W0074 | Water closets | W0006 | T0320 |
| W0088 | Water purifying installations | E0239 | V0262 |
| W0096 | Water-closet outlet floats | F0189 | U0027 |
| W0097 | Water-closet pans | C1068 | M0229 |
| Subclass 03 | Heating equipment |
| A0075 | Air humidifiers for heating radiators | S0066 | P0117 |
| A0127 | Animal or plant husbandry heaters | C0420 | M0154 |
| A0193 | Ashpan sifters | T0083 | H0063 |
| A0203 | Atomic piles | P0312 | A0176 |
| B0021 | Baffle plates (Flame –) for oilheating systems | D0048 | T0261 |
| B0049 | Bakers' ovens | F0247 | S0211 |
| B0141 | Bath heaters | C0425 | F0375 |
| B0142 | Bath heaters (Control panels for –) | P0038 | F0374 |
| B0285 | Bleeding taps for heating radiators | P0838 | L0187 |
| B0336 | Boilers (Steam –) for heating | G0066 | G0106 |
| B0486 | Braziers | B0480 | S0391 |
| B0504 | Brick and tile kilns | F0244 | T0287 |
| B0582 | Bunsen burners | B0183 | B0223 |
| B0589 | Burners [heating] | B0550 | É0007 |
| B0590 | Burners (Igniters for gaseous fuel –) | A0163 | G0197 |
| B0591 | Burners (Jets for gas –) | B0567 | F0327 |
| C0294 | Chambranles for heating arrangements | C0329 | B0231 |
| C0551 | Collectors (Solar heat –) | C0150 | N0018 |
| C0639 | Control panels for bath heaters | P0038 | F0374 |
| C0643 | Convectors | C0786 | K0512 |
| D0255 | Draught regulators for fireplaces | R0151 | H0306 |
| F0120 | Fire grates | G0171 | T0482 |
| F0137 | Fireplaces (Indoor –) | C0477 | B0057 |
| F0185 | Flame baffle plates for oilheating systems | D0048 | T0261 |
| F0243 | Flued stoves | P0521 | K0303 |
| F0278 | Footwarmers | C0433 | L0051 |
| F0356 | Furnaces | F0252 | T0479 |
| F0357 | Furnaces (Glassmaking –) | F0250 | Ü0038 |
| F0358 | Furnaces (Smelting –) [electric] | F0249 | E0101 |
| G0051 | Gas fireplaces | C0474 | G0028 |
| G0080 | Generators (Hot air –) | G0065 | F0282 |
| G0104 | Glassmaking furnaces | F0250 | Ü0038 |
| G0160 | Grates (Fire –) | G0171 | T0482 |
| H0137 | Hearths | F0252 | T0479 |
| H0138 | Heat collectors (Solar –) | C0150 | N0018 |
| H0139 | Heat recuperators | R0121 | R0064 |
| H0140 | Heaters (Animal or plant husbandry –) | C0420 | M0154 |
| H0141 | Heaters (Bath –) | C0425 | F0375 |
| H0146 | Heating boilers | C0413 | F0403 |
| H0148 | Heating equipment | C0419 | F0400 |
| H0265 | Hot air generators | G0065 | F0282 |
| I0025 | Igniters for gaseous fuel burners | A0163 | G0197 |
| I0052 | Infrared lamps for heating | L0036 | I0018 |
| I0084 | Intake pipes for central heating | T0441 | S0504 |
| J0019 | Jets for gas burners | B0567 | F0327 |
| K0025 | Kilns (Brick and tile –) | F0244 | T0287 |
| K0026 | Kilns (Pottery –) | F0246 | É0006 |
| L0044 | Lamps (Infrared –) for heating | L0036 | I0018 |
| N0067 | Nuclear reactors | R0103 | N0066 |
| O0062 | Ovens (Bakers' –) | F0247 | S0211 |
| O0064 | Ovens [industrial] | F0251 | I0029 |
| P0223 | Piles (Atomic –) | P0312 | A0176 |
| P0257 | Pipes (Intake –) for central heating | T0441 | S0504 |
| P0409 | Pottery kilns | F0246 | É0006 |
| R0039 | Radiators for heating | R0024 | R0003 |
| R0094 | Reactors (Nuclear –) | R0103 | N0066 |
| R0167 | Regulators (Draught –) [heating] | T0215 | F0399 |
| S0061 | Sauna heaters | S0070 | S0257 |
| S0360 | Sifters (Ashpan –) | T0083 | H0063 |
| S0488 | Smelting furnaces [electric] | F0249 | E0101 |
| S0521 | Solar heat collectors | C0150 | N0018 |
| S0712 | Steam boilers for heating | G0066 | G0106 |
| S0789 | Stoves [heating] | P0519 | K0171 |
| W0081 | Water heaters [electric] | C0431 | E0122 |
| W0082 | Water heaters [gas] | C0430 | V0258 |
| Subclass 04 | Ventilation and air-conditioning equipment |
| A0068 | Air conditioners | C0619 | L0179 |
| A0069 | Air conditioning apparatus | C0735 | K0466 |
| A0071 | Air deodorizing apparatus | D0086 | L0173 |
| A0074 | Air humidifiers | H0089 | P0116 |
| A0079 | Air purifiers | P0839 | L0188 |
| A0080 | Air sterilizing apparatus | S0374 | L0172 |
| A0081 | Air vents | B0385 | S0348 |
| D0055 | Deodorizing apparatus (Air –) | D0086 | L0173 |
| E0130 | Extractors (Smoke –) | A0315 | F0388 |
| F0018 | Fans (Ventilating –) | V0059 | V0107 |
| H0229 | Hoods for ventilation | H0064 | S0347 |
| H0279 | Humidifiers (Air –) | H0089 | P0116 |
| P0522 | Purifiers (Air –) | P0839 | L0188 |
| S0490 | Smoke extractors | A0315 | F0388 |
| S0732 | Sterilization (Apparatus for air –) | S0374 | L0172 |
| V0016 | Valves (Ventilation –) | S0325 | S0351 |
| V0060 | Ventilating fans | A0057 | S0352 |
| V0061 | Ventilation ducts | C0744 | S0346 |
| V0062 | Ventilation grids | G0169 | S0350 |
| V0064 | Ventilation valves | S0325 | S0351 |
| V0065 | Ventilator blades | P0018 | V0106 |
| Subclass 05 | Solid fuel |
| B0519 | Briquettes [fuel] | B0499 | B0212 |
| C0304 | Charcoal | C0361 | F0033 |
| C0504 | Coal | C0360 | S0444 |
| C0505 | Coal briquettes | A0079 | S0450 |
| F0126 | Fire starters | A0157 | G0198 |
| F0347 | Fuels (Solid –) | C0684 | S0472 |
| N0072 | Nuts [fuel] | B0429 | D0052 |
| S0530 | Solid fuels | C0684 | S0472 |
| Subclass 99 | Miscellaneous |
| B0594 | Burners (Trash –) | I0034 | S0373 |
| D0167 | Distillation apparatus (Water –) | D0179 | V0242 |
| I0035 | Incinerators (Refuse –) | I0033 | H0282 |
| R0156 | Refuse incinerators | I0033 | H0282 |
| T0334 | Trash burners | I0034 | S0373 |
| W0078 | Water distillation apparatus | D0179 | V0242 |
| WIPO Locarno Classification - Class 23 |