| Conserver, oxygen | 10 | — |
| Conserver, oxygen / Regulator, pressure, gas cylinder | 13 | — |
| Cylinder, compressed gas, and valve | 23 | — |
| Cylinder, compressed gas, and valve / Regulator, pressure, gas cylinder | 15 | — |
| Regulator, pressure, gas cylinder | 46 | — |
| Regulator, pressure, gas cylinder | 11 | — |