Valve design to ASME Section VIII Div 2 vs ASME B16.34

Question

Valve design to ASME Section VIII Div 2 vs ASME B16.34

bryansonnier (Mechanical)

(OP)

23 Jun 23 20:31

Is it possible to design a valve to asme section VIII div 2 and not asme b16.34. Looking at the minimum wall thicknesses of asme b16.34 there doesn't seem to be any regard for material strength, unless there is a factor in the code i'm missing. If i build a valve out of 60ksi min yield material or 30ksi min yield material the b16.34 code doesn't seem to account for it. Am i reading this wrong?

bryansonnier (Mechanical) · Answer 1 · 2023-06-23 20:35:57

Nevermind (kind of), i figured it out partially. They just increase the working pressure by class. But you could still have a valve pass section VIII div 2 and not meat the min wall thickness on b16.34 in some areas.

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Valve design to ASME Section VIII Div 2 vs ASME B16.34