ASME B16.34: Understanding Valve Pressure-Temperature Ratings
“Class 800” is a familiar term, but it only tells half the story. The true safety of an industrial valve is defined by its Pressure-Temperature (P-T) rating, governed by the ASME B16.34 standard. As process temperatures climb, the allowable pressure capacity of even the highest-grade steel drops. This guide breaks down the science of P-T ratings, helping engineers prevent catastrophic failures by selecting the right valve for the right thermal environment.
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