Minimum Wall Temperature Calculator ASME B31.3
Applicable when fluid temperature is 65°C (150°F) or above.
This calculator uses the specified percentages for noninsulated components.
This calculator uses the specified percentages for noninsulated components.
Calculation Result
| Component | Percentage | Minimum Wall Temperature |
|---|---|---|
| Pipe / Valve / Welding Fitting | 95% | |
| Flange (Except Lap Joint) | 90% | |
| Lap Joint Flange | 85% | |
| Bolting | 80% |
Formula:
Pipe / Valve = Fluid Temperature × 0.95
Flange = Fluid Temperature × 0.90
Lap Joint Flange = Fluid Temperature × 0.85
Bolting = Fluid Temperature × 0.80
Pipe / Valve = Fluid Temperature × 0.95
Flange = Fluid Temperature × 0.90
Lap Joint Flange = Fluid Temperature × 0.85
Bolting = Fluid Temperature × 0.80
