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Water Control Valves - Flow Coefficient Cv Diagram

Sizing of water control valves - Imperial units.

The flow coefficient Cv for a water control valve can be estimated with the diagram below:

Water valves - Cv diagram

Example - Required Cv for a water control valve

With water flow 6 gpm and designed pressure drop 10 psi through a control valve - the required flow coefficient Cv can be estimated to ~2 as indicated in the chart below.

Water valves - Cv diagram example

Related Topics

  • Control Valve Sizing

    Control Valve terminology, bodies, trim, flow characteristics, Cv and Kv sizing, noise, actuators, positioners and more.

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