Powell Valves - Pressure/Temperature Charts

Table 4 - ASTM A217 Grade C5

Use normalized and tempered material only.

Standard Class

Working Pressures by Classes, psig
Temperature, °F	150	300	400	600	900	1500	2500	4500
-20 to 100	290	750	1000	1500	2250	3750	6250	11,250
200	260	745	995	1490	2235	3725	6205	11,170
300	230	715	955	1430	2150	3580	5965	10,740
400	200	705	940	1410	2115	3520	5880	10,585
500	170	665	885	1330	1995	3325	5540	9965
600	140	605	805	1210	1815	3025	5040	9070
650	125	590	785	1175	1765	2940	4905	8825
700	110	570	755	1135	1705	2840	4730	8515
750	95	530	705	1055	1585	2640	4400	7920
800	80	510	675	1015	1525	2540	4230	7610
850	65	485	645	965	1450	2415	4030	7250
900	50	370	495	740	1110	1850	3085	5555
950	35	275	365	550	825	1370	2285	4115
1000	20	200	265	400	595	995	1655	2985
1050	20(1)	145	190	290	430	720	1200	2160
1100	20(1)	100	135	200	300	495	830	1490
1150	20(1)	60	80	125	185	310	515	925
1200	15(1)	35	45	70	105	170	285	515

NOTE: (1) For welding end valves only. Flanged end ratings terminate at 1000°F


Special Class

Working Pressures by Classes, psig
Temperature, °F	150	300	400	600	900	1500	2500	4500
-20 to 100	290	750	1000	1500	2250	3750	6250	11,250
200	290	750	1000	1500	2250	3750	6250	11,250
300	280	730	970	1455	2185	3645	6070	10,930
400	275	720	960	1440	2160	3600	6000	10,800
500	275	720	960	1440	2160	3600	6000	10,800
600	270	705	945	1415	2120	3535	5895	10,605
650	270	700	930	1395	2095	3495	5820	10,480
700	265	685	915	1370	2055	3430	5715	10,285
750	255	660	880	1320	1980	3300	5500	9900
800	245	640	850	1275	1915	3195	5320	9580
850	230	605	805	1210	1815	3020	5035	9065
900	175	465	615	925	1390	2315	3855	6945
950	130	345	455	685	1030	1715	2855	5145
1000	95	250	330	495	745	1245	2070	3730
1050	70	180	240	360	540	900	1500	2700
1100	50	125	165	250	375	620	1035	1865
1150	30	75	105	155	230	385	645	1155
1200	15	45	55	85	130	215	355	645

NOTE: Special Class Ratings apply to Threaded and Weld End Valves only and require upgrading per paragraph 8 of ASME B16.34