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Valve Pressure – Temperature Rating Calculator

ASME B16.34 · STANDARD CLASS

Pressure–Temperature Rating Lookup

Find the maximum allowable working pressure for flanged and butt-welding valves by pressure class, material group and operating temperature, then check your duty point against it.

Max Working Pressure
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At Temperature
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?
Enter a duty pressure to check
The tool will compare your operating pressure against the rated maximum at temperature.
Pressure–Temperature Curve
 Rated MAWP  Your duty point
Rating Table
TemperatureMax Pressure (bar)

All values are in accordance with ASME B16.34 Standard Class ratings. Interpolated values are calculated by linear interpolation between adjacent tabulated temperatures. This tool is provided for reference only and does not constitute engineering advice. Always verify against the current edition of ASME B16.34 and consult a qualified engineer for safety-critical applications.