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The flow coefficient of a device is a relative measure of its efficiency at allowing fluid flow. It describes the relationship between the pressure drop across an orifice and the corresponding flow rate.
Additional recommended knowledge
Coefficent of discharge is ratio between the actual flow rate to Theoretical discharge.
In mathematical terms, the flow coefficient Cv is the volume (in US gallons) of water at 60° F that will flow per minute through a valve with a pressure drop of 1 psi across the valve.
Numerically this definition can be expressed as:
Cv = Flow coefficient or flow capacity rating of valve.
F = Rate of flow (US gallons per minute).
SG = Specific gravity of fluid (Water = 1).
ΔP = Pressure drop across valve (psi).
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Flow_coefficient". A list of authors is available in Wikipedia.|