| Code | Description |
| VC | Extractor, Scrubber, Evaporator (Vessels, columns and reactors) |
| VD | Gas boot |
| VE | Column |
| VH | Deaerator/degasser/flash tank |
| VJ | Contact absorption equipment/Regenerator |
| VK | Dryer |
| VN | Knock out drum, gun barrel and scrubber |
| VQ | Slug catcher |
| VS | Production separator |
| VY | Horizontal and vertical vessel at atmosphere pressure |
| VO | Extractor, scrubber, evaporator |
| CF | Mechanical separator/screen/vibrating screen |
| VP | Test separator |
| VU | Desalted, electrostatic separator |
| HA | Exchanger Shell and Tube |
| HB | Plate exchanger Shell |
| HC | Air cooled exchanger |
| HF | Double pipe exchanger |
| HH | Printed circuit heat exchanger |
| HK | Finned or not finned tube exchanger without shell |