Maximum pressures*
The pressure ratings of thermoplastic pipe represent the maximum allowable operating pressure within a piping system for water at 73 degrees Fahrenheit. (23.4 degrees Celsius) based upon a service factor of 0.5. These are the rated pressures for a number of pipe sizes in PVC/CPVC materials.
| Nominal Size |
Schedule 40 |
Schedule 80 |
Threaded Schedule 80 |
| -1/2 |
600 |
850 |
425 |
| 3/4 |
480 |
690 |
345 |
| 1 |
450 |
630 |
320 |
| 1-1/4 |
370 |
520 |
260 |
| 1-1/2 |
330 |
470 |
240 |
| 2 |
280 |
400 |
200 |
| 2-1/2 |
300 |
420 |
210 |
| 3 |
260 |
370 |
190 |
| 4 |
220 |
320 |
160 |
| 5 |
190 |
290 |
140 |
| 6 |
180 |
280 |
140 |
| 8 |
160 |
250 |
120 |
| 10 |
140 |
230 |
120 |
| 12 |
130 |
230 |
110 |
*Pressure ratings listed here may have to be reduced when the working fluid is other than water at 73° Fahrenheit.
Title: What are the pressure ratings of the SCH40 and SCH80 PVC pipe fittings?
Description: Pressure ratings for pipe fittings
Published: 5/13/2010
Last Edited: 1/3/2023
Information disclaimer:
The information contained in this article is for general information purposes only. The information is provided by
United States Plastic Corp. and while we endeavor to keep the information up to date and correct, we make no representations or
warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with
respect to the website or the information, products, services, or related graphics contained on the website for any purpose.
Any reliance you place on such information is therefore strictly at your own risk.
In no event will we be liable for any loss or damage including without limitation, indirect or consequential loss
or damage, or any loss or damage whatsoever arising from loss of materials, time or profits arising out of,
or in connection with, the use of this information.