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Water Control Valves - flow coefficient Cv diagram

Sizing of water control valves

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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

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  • es: válvula de control de flujo gpm psi agua caída de presión diagrama cv
  • de: cv Diagramm Druckabfall Flusswasser psi gpm Steuerventil
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  • Engineering ToolBox, (2008). Water Control Valves - flow coefficient Cv diagram . [online] Available at: [Accessed Day Mo. Year].

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