Temperature pressure ratings for PVC and CPVC pipes  -- from the Cole Palmer website...

PVC and CPVC Piping Selection Guide

Solvent-Welded Pressure Rating vs Service Temperature for PVC and CPVC Pipes

 
 

 Nom.
size		  
 

 D
Outside
dia.		  
 

 †
Wall		  
 

 DR=D/†		 Pressure rating (P)
73°F 90°F 100°F 110°F 120°F 130°F 140°F 160°F 180°F 200°F 210°F
PVC
f=1
S=2000		 CPVC
f=1
S=2000		 PVC
f=0.75
S=1500		 PVC
f=0.62
S=1240		 PVC
f=0.50
S=1000		 PVC
f=0.40
S=800		 CPVC
f=0.65
S=1300		 PVC
f=0.30
S=600		 CPVC
f=0.57
S=1135		 PVC
f=0.22
S=440		 CPVC
f=0.50
S=1000		 CPVC
f=0.40
S=800		 CPVC
f=0.25
S=500		 CPVC
f=0.20
S=400		 CPVC
f=0.16
S=320
1/2 0.840 0.147 5.714 848 848 636 526 424 339 552 255 484 187 424 339 212 170 136
3/4 1.050 0.154 6.818 688 688 516 426 344 275 447 206 392 151 344 275 172 138 110
1 1.315 0.179 7.346 630 630 473 390 315 252 410 189 359 139 315 252 158 126 101
1-1/4 1.660 0.191 8.691 520 520 390 322 260 208 338 156 296 114 260 208 130 104 83
1-1/2 1.900 0.200 9.500 471 471 353 292 235 188 306 141 268 104 235 188 118 94 75
2 2.375 0.218 10.894 404 404 303 251 202 162 263 121 230 89 202 162 101 81 65
2-1/2 2.875 0.276 10.417 425 425 319 263 212 170 276 127 242 93 212 170 106 85 68
3 3.500 0.300 11.667 375 375 281 233 188 150 244 113 214 83 188 150 94 75 60
4 4.500 0.337 13.353 324 324 243 201 162 130 210 97 185 71 162 130 81 65 52
6 6.625 0.432 15.336 279 279 209 173 140 112 181 84 159 61 140 112 70 56 45
8 8.625 0.500 17.250 246 246 185 153 123 98 160 74 140 54 123 98 62 49 39

P =  2S† 
D - †		 =    2S   
DR - 1		 = P73°Ff
    =Pressure rating of pipe at service temperatures (psi)
S=Hydrostatic design stress (psi)
D=Outside diameter of pipe (inches)
†=Pipe wall thickness (inches)
f=Derating factor for service temperature
DR=Dimensions ratio (D/†)
P73°F=Pressure rating at 73°F

Note 1: Figures for pressure rating at 7