PRESSURE
AND TEMPERATURE RATINGS
Maximum
Allowable Non-Shock Pressure, psig.
ANSI/ASME B 16.34-1988
Class 900, 1500, & 2500
| Service
Temperature |
Class
900 |
Class
1500 |
Class
2500 |
°F |
°C |
WCB
(a) |
WC1
(b) |
WC6
(c) |
WC9
(c) |
C5 |
WCB
(a) |
WC1
(b) |
WC6
(c) |
WC9
(c) |
C5 |
WCB
(a) |
WC1
(b) |
WC6
(c) |
WC9
(c) |
C5
|
-20
to
100
200
300 |
-29
to
38
93
149 |
2220
2025
1970 |
2085
2035
1955 |
2250
2135
2020 |
2250
2150
2030 |
2250
2250
2185 |
3705
3375
3280 |
3470
3395
3260 |
3750
3560
3365 |
3750
3580
3385
|
3750
3750
3640 |
6170
5625
5470 |
5785
5660
5435 |
6250
5965
5640 |
6250
5965
5640 |
6250
6250
6070 |
400
500
600 |
204
260
316 |
1900
1795
1640 |
1920
1865
1815 |
1975
1925
1815 |
1945
1920
1815 |
2115
1995
1815 |
3170
2995
2735 |
3200
3105
3025 |
3290
3210
3025 |
3240
3200
3025 |
3530
3325
3025 |
5280
4990
4560 |
5330
5180
5040 |
5400
5330
5040 |
5400
5330
5040 |
5880
5540
5040 |
650
700
750 |
343
371
399 |
1610
1600
1510 |
1765
1705
1595 |
1765
1705
1595 |
1765
1705
1595 |
1765
1705
1595 |
2685
2665
2520 |
2940
2840
2660 |
2940
2840
2660 |
2940
2840
2660 |
2940
2840
2660 |
4475
4440
4200 |
4905
4730
4430 |
4905
4730
4430 |
4905
4730
4430 |
4905
4730
4430 |
800
850
900 |
427
454
482 |
1235
805
515 |
1525
1460
1350 |
1525
1460
1350 |
1525
1460
1350 |
1490
1315
1060 |
2060
1340
860 |
2540
2435
2245 |
2540
2435
2245 |
2540
2435
2245 |
2485
2195
1765 |
3430
2230
1430 |
4230
4060
3745 |
4230
4060
3745 |
4230
4060
3745 |
4145
3660
2945 |
950
1000
1050 |
510
538
566 |
310
155 |
845
495
|
1130
670
410 |
1130
805
595 |
780
575
420 |
515
260
|
1405
825
|
1885
1115
685 |
1885
1340
995 |
1305
960
705 |
860
430
|
2345
1370
|
3145
1860
1145 |
3145
2230
1660 |
2170
1600
1170 |
1100
1150
1200 |
593
621
649 |
|
|
290
|
340
|
310
205
135 |
|
|
480
|
565
|
515
345
225 |
|
|
800
|
945
|
860
570
370 |
Hydrostatic
Shell
Test Pressure |
3350 |
3150 |
3375 |
5575 |
5225 |
5625 |
9275 |
8700 |
9375 |
Valve
Closure
Test
Pressure |
Fluid |
2442 |
2294 |
2475 |
4076 |
3817 |
4125 |
6787 |
6365 |
6875 |
Gas |
80 |
80 |
80 |
Notes:
(a)—Permissible, but not recommended for prolonged usage above
about 427°C (800°F).
(b)—Permissible, but not recommended for prolonged usage above
about 454°C (850°F).
(c)—Not to be used over 1100°F.
* For welded end valves only. Flanged end ratings terminate at 538°C
(1000°F).