ASME B16.34

Pressure-Temperature Rating Lookup

Find the working pressure for Class 150–4500 valves at your operating temperature, by material group. Ratings are the exact ASME B16.34-2020 Standard Class values.

Lookup

Pick a material group and class, then enter your operating temperature.

Working Pressure

ASME B16.34 — 2020

—

Maximum Allowable Working Pressure
—psig
Select a material and conditions

Full Class Reference Table

Temp15030060090015002500
Reference values only. Actual working pressure depends on the specific valve, trim, and gasket assembly. Always verify against the manufacturer's certified ratings and applicable code stamping before specifying.
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