Liquids Flow Rate

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Conventional Valve, Balanced-Bellows Valve, or Pilot-Operated Valve

The corresponding equations for liquid flow are the following:

 Liquids Flow Rate

 Liquids Flow Rate
Capacity correction factor, K,, due to viscosity.

 Liquids Flow Rate

Note that a preliminary orifice size must be determined in order to calculate Reynolds number. If the viscosity correction is significant, it may be necessary to iterate to get a final size.

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