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SenseCalc

Valve Flashing Margin Check

FL-squared margin against choked flow.

Inputs

Valve duty

Upstream absolute.

Downstream absolute.

At flowing temperature.

Trim recovery factor.

Result

Pressure-drop ratio x
0.7792
No-cavitation (1=yes)
1
Calculation details
Choked xFz
0.7700
FL squared
0.8100

Verify

Check before relying.

FL squared is the ceiling.

  • FL from the trim datasheet
  • Vapor pressure at flowing temperature
  • Absolute pressures, never gauge
This calculator is a first-pass screening tool. Verify nameplate data, wiring, module configuration, and calibrator readings before acting.

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Workspace

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