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