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Maximum operating and required burst pressure of PVC - Polyvinyl Chloride - and CPVC - Chlorinated Polyvinyl Chloride - pipe fittings
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Maximum operating and required minimum bursting pressure at 73oF (23oC) for PVC and CPVC piping fittings according ASTM D1785 "Standard Specification for Poly(Vinyl Chloride) (PVC) Plastic Pipe, Schedules 40, 80, and 120" can be found in the table below:
| PVC and CPVC Pipes | ||||
| Nominal Pipe Size
(inches) |
Required Minimum
Burst Pressure
(psi) |
Maximum Operating
Pressure
(psi) |
||
| Schedule 401) | Schedule 802) | Schedule 40 | Schedule 80 | |
| 1/2 | 1910 | 2720 | 358 | 509 |
| 3/4 | 1540 | 2200 | 289 | 413 |
| 1 | 1440 | 2020 | 270 | 378 |
| 1 1/4 | 1180 | 1660 | 221 | 312 |
| 1 1/2 | 1060 | 1510 | 198 | 282 |
| 2 | 890 | 1290 | 166 | 243 |
| 2 1/2 | 970 | 1360 | 182 | 255 |
| 3 | 840 | 1200 | 158 | 225 |
| 4 | 710 | 1110 | 133 | 194 |
| 5 | 620 | 1040 | 117 | 173 |
| 6 | 560 | 930 | 106 | 167 |
| 8 | 500 | 890 | 93 | 148 |
| 10 | 450 | 790 | 84 | 140 |
| 12 | 450 | 600 | 79 | 137 |
Note! The maximum operating pressure derates with temperature. At maximum operating temperature for PVC (140oF, 60oC) the strength is derated to approximately 20% of the strength at 73oF (23oC). For CPVC the strength is reduced to 20% of the initial strength at 200oF (93oC).
Be aware that maximum operating pressure varies with the design of the fittings. Consult the manufacturing data.
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