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FlowCalc
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Valve Opening Curve Estimator

Opening-to-flow ONLY with manufacturer curve data. Never assume 50% open = 50% flow.

Inputs

Inputs

Datasheet rated Cv at 100% open.

0.05 to 1. Below 10% control is unreliable.

Result

Cv at this opening (linear)
60.00
Flow, linear characteristic
69.36 m3/h

Learn

How to use this result.

Estimate flow ONLY when Cv(h) curve is known.

Verify before relying.

  1. Confirm units match the input labels before trusting the result.
Screening result for preliminary sizing only. Verify against the manufacturer datasheet and applicable standard before procurement or construction.

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Workspace

Keep the assumptions with the result.

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