| Name | Description |
| SINGLEPORT |
 | Single Port | Valve that has a single entry port from the system that it serves, the exit port being to the surrounding environment |
|
| ANGLED_2_PORT |
 | Angled 2 Port | Valve in which the direction of flow is changed through 90 degrees |
|
| STRAIGHT_2_PORT |
 | Straight 2 Port | Valve in which the flow is straight through |
|
| STRAIGHT_3_PORT |
 | Straight 3 Port | Valve with three separate ports |
|
| CROSSOVER_4_PORT |
 | Crossover 4 Port | Valve with 4 separate ports |
|
| OTHER |
 | (other) | Value is not listed. |
|
| NOTKNOWN |
 | (unknown) | Value is unknown. |
|
| UNSET |
 | (unset) | Value has not been specified. |
|