PVC Pipe Schedule 40
| Nom. Pipe Size (in) | O.D. | Average I.D. | Min. Wall | Nom. Wt./Ft. | Max. W.P. PSI** |
|---|---|---|---|---|---|
| 1/8" | 0.405 | 0.249 | 0.068 | 0.051 | 810 |
| 1/4" | 0.540 | 0.344 | 0.088 | 0.086 | 780 |
| 3/8" | 0.675 | 0.473 | 0.091 | 0.115 | 620 |
| 1/2" | 0.840 | 0.602 | 0.109 | 0.170 | 600 |
| 3/4" | 1.050 | 0.804 | 0.113 | 0.226 | 480 |
| 1" | 1.315 | 1.029 | 0.133 | 0.333 | 450 |
| 1-1/4" | 1.660 | 1.360 | 0.140 | 0.450 | 370 |
| 1-1/2" | 1.900 | 1.590 | 0.145 | 0.537 | 330 |
| 2" | 2.375 | 2.047 | 0.154 | 0.720 | 280 |
| 2-1/2" | 2.875 | 2.445 | 0.203 | 1.136 | 300 |
| 3" | 3.500 | 3.042 | 0.216 | 1.488 | 260 |
| 3-1/2" | 4.000 | 3.521 | 0.226 | 1.789 | 240 |
| 4" | 4.500 | 3.998 | 0.237 | 2.118 | 220 |
| 5" | 5.563 | 5.016 | 0.258 | 2.874 | 190 |
| 6" | 6.625 | 6.031 | 0.280 | 3.733 | 180 |
| 8" | 8.625 | 7.942 | 0.322 | 5.619 | 160 |
| 10" | 10.750 | 9.976 | 0.365 | 7.966 | 140 |
| 12" | 12.750 | 11.889 | 0.406 | 10.534 | 130 |
| 14" | 14.000 | 13.073 | 0.437 | 12.462 | 130 |
| 16" | 16.000 | 14.940 | 0.500 | 16.286 | 130 |
| 18" | 18.000 | 16.809 | 0.562 | 20.587 | 130 |
| 20" | 20.000 | 18.743 | 0.593 | 24.183 | 120 |
| 24" | 24.000 | 22.544 | 0.687 | 33.652 | 120 |
** The Pressure ratings shown are for water, non-shock, @ 73°F with plain end pipe. Threaded pipe requires a 50% reduction in the pressure ratings stated. Appropriate temperature de-rating factors must be applied to determine the maximum allowable pressure when working at elevated temperatures greater than 73°F.
Derating Factor
| Operating Temp (°F) | De-Rating Factor |
|---|---|
| 73 | 1.00 |
| 80 | 0.88 |
| 90 | 0.75 |
| 100 | 0.62 |
| 110 | 0.51 |
| 120 | 0.40 |
| 130 | 0.31 |
| 140 | 0.22 |