Schedule 40 PVC Pipe Size and Pressure Data
|
Nominal Pipe Size (in) |
O.D. |
Average I.D |
Min. Wall |
Nominal Weight/Foot |
Maximum W.P. PSI ** |
| 1/4" |
0.540" |
0.344" |
0.088" |
0.086 lb |
780 |
| 3/8" |
0.675" |
0.473" |
0.091" |
0.115 lb |
620 |
| 1/2" |
0.840" |
0.602" |
0.109" |
0.170 lb |
600 |
| 3/4" |
1.050" |
0.804" |
0.113" |
0.226 lb |
480 |
| 1" |
1.315' |
1.029" |
0.133" |
0.333 lb |
450 |
| 1-1/4" |
1.660" |
1.360" |
0.140" |
0.450 lb |
370 |
| 1-1/2" |
1.900" |
1.590" |
0.145" |
0.537 lb |
330 |
| 2" |
2.375" |
2.047" |
0.154" |
0.720 lb |
280 |
| 2-1/2" |
2.875" |
2.445" |
0.203' |
1.136 lb |
300 |
| 3" |
3.500" |
3.042" |
0.216" |
1.488 lb |
260 |
| 4" |
4.500" |
3.998" |
0.237" |
2.118 lb |
220 |
| 6" |
6.625" |
6.031" |
0.280" |
3.733 lb |
180 |
| 8" |
8.625" |
7.942" |
0.322" |
5.619 lb |
160 |
| 10" |
10.750" |
9.976" |
0.365" |
7.966 lb |
140 |
| 12" |
12.750" |
11.889" |
0.406" |
10.534 lb |
130 |
| 18" |
18.000" |
16.809" |
0.562" |
20.587 lb |
130 |
| 20" |
20.000" |
18.743" |
0.593" |
24.183 lb |
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.
SCH80 PVC Pipe Size and Pressure Data
|
Nominal Pipe Size (in) |
O.D. |
Average I.D. |
Min. Wall |
Nominal Weight/Foot |
Maximum W.P. PSI ** |
| 1/4" |
0.540" |
0.282" |
0.119" |
0.105 lb |
1130 |
| 3/8" |
0.675" |
0.403" |
0.126" |
0.146 lb |
920 |
| 1/2" |
0.840" |
0.526" |
0.147" |
0.213 lb |
850 |
| 3/4" |
1.050" |
0.722" |
0.154" |
0.289 lb |
690 |
| 1" |
1.315' |
0.936" |
0.179" |
0.424 lb |
630 |
| 1-1/4" |
1.660" |
1.255" |
0.191" |
0.586 lb |
520 |
| 1-1/2" |
1.900" |
1.476" |
0.200" |
0.711 lb |
470 |
| 2" |
2.375" |
1.913" |
0.218" |
0.984 lb |
400 |
| 2-1/2" |
2.875" |
2.290" |
0.276" |
1.500 lb |
420 |
| 3" |
3.500" |
2.864" |
0.300" |
2.010 lb |
370 |
| 4" |
4.500" |
3.786" |
0.337" |
2.938 lb |
320 |
| 6" |
6.625" |
5.709" |
0.432" |
5.610 lb |
280 |
| 8" |
8.625" |
7.565 |
0.500" |
8.522 lb |
250 |
| 10" |
10.750" |
9.493" |
0.593" |
12.635 lb |
230 |
| 12" |
12.750" |
11.294" |
0.687" |
17.384 lb |
230 |
| 18" |
18.000" |
16.014" |
0.937" |
33.544 lb |
220 |
| 20" |
20.000" |
17.814" |
1.031" |
41.047 lb |
220 |
| 24" |
24.000" |
21.418" |
1.218" |
58.233 lb |
210 |
**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.
De-rating Factor
| Operating Temperature(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 |
|
|
|
Example: 10" PVC Schedule 80 @120° F =?
230 PSI X 0.40 = 90 PSI max @ 120° F
Title: What is the de-rating factor for PVC SCH40 and SCH80 pipe?
Description: This article includes pipe dimensions, pressure ratings, and de-rating factors at various temperatures.
Published: 11/20/2007
Last Edited: 1/3/2023
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