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Pressure-Temperature De-Rating Factors for CTS CPVC Piping Systems are indicated below:
| Temperature (oF) |
De-Rating Factor | Rating (psi) |
| 73 | 1.00 | 400 |
| 80 | 1.00 | 400 |
| 90 | 0.91 | 360 |
| 100 | 0.82 | 325 |
| 120 | 0.65 | 260 |
| 140 | 0.50 | 200 |
| 160 | 0.40 | 160 |
| 180 | 0.25 | 100 |
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