B31 · ASME B31
ASME's pressure-piping code family (B31.1 power, B31.3 process) — the North American code basis for charged liquid-cooling piping.
Current numbers
1.5×design pressure for the hydrostatic acceptance hold on the isolated pipe scope, per the governing code (ASME B31.x / EN 13480) — assembled-loop components (CDU, hoses, QDs) are proven to their own MAWP-derived limits, never a blanket multiplier
1.5x designtypical hydrostatic test pressure for B31.9/B31.3 charged piping acceptance