Commonly used P&ID (Piping and Instrumentation Diagram) symbols for pumps / compressors. Note that they may differ slightly from one project to another.
| Centrifugal pump |  {adinserter 1} |
| Motor |  |
| Dosing pump |  |
| Gear pump |  {adinserter 1} |
| Vane pump |  |
| Vertical pump |  |
| Metering pump |  |
| Centrifugal compressor |  {adinserter 1} |