| for flow control | 8 | purpose |
| for open/close duties | 5 | purpose |
| in durability | 2 | other |
| valve → be → great | 14 |
| valve → be → excellent | 9 |
| valve → work → great | 3 |
| negative | neutral | positive |
| 0.072 | 0.143 | 0.785 |
| Raw frequency | 26 |
| Normalized frequency | 0.325 |
| Modifier score | 0.400 |
| Perplexity | 360.917 |