Pressure Temperature Rating as per ASME B16.34

A 105 - A 216 WCB - A 350 LF2

°C

Working pressure (bar) by classes

150

300

600

800

900

1500

2500

-29  -38

19.7

51.0

102.0136.2153.1255.5425.4
9317.946.593.1124.1139.6232.7387.8
14915.945.290.7120.7135.8226.1377.1
20413.843.887.6

116.5

131.0218.6364.0
26011.741.482.7110.0123.8206.5344.0
3169.737.975.5100.7113.1188.6314.4
3438.636.974.198.6111.0185.1308.5
3717.636.973.497.9110.3183.7306.1
3996.634.869.692.7104.1173.7289.6
4275.528.356.975.885.2142.0236.5
4544.518.636.949.355.592.4153.8
4823.411.723.831.735.559.398.6
5102.47.214.119.021.435.559.3
5381.43.47.29.610.717.929.6
566-------
593-------
621-------
649-------
677-------
704-------
732-------
760-------
788-------
816-------

A 105, A 216 WCB: permissible but not recommended for prolonged usage above about 454°C

A 350 LF2: not be used over 343°C