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CV Flow Calculator

Formula

To calculate the CV Flow Coefficient ( $Cv$ ):

$Cv = Q \times \sqrt{\frac{SG}{P}}$

Where:

$Cv$ is the coefficient of flow
$Q$ is the flow rate
$SG$ is the specific gravity of the fluid inflow
$P$ is the pressure drop across the valve the fluid is moving through

What is CV Flow?

A CV flow, more commonly known as the coefficient of flow, is a measure of the ability of a fluid to flow through a valve at a certain pressure drop. It helps in determining the flow capacity of a valve and is crucial in various engineering and fluid dynamics applications.

Example Calculation 1

Let's assume the following values:

Flow Rate ( $Q$ ) = 100
Specific Gravity ( $SG$ ) = 0.8
Pressure Drop ( $P$ ) = 2

Using the formula:

$Cv = 100 \times \sqrt{\frac{0.8}{2}} = 100 \times \sqrt{0.4} \approx 63.25$

The CV Flow Coefficient is approximately 63.25.

Example Calculation 2

Let's assume the following values:

Flow Rate ( $Q$ ) = 150
Specific Gravity ( $SG$ ) = 1.2
Pressure Drop ( $P$ ) = 3

Using the formula:

$Cv = 150 \times \sqrt{\frac{1.2}{3}} = 150 \times \sqrt{0.4} \approx 94.87$

The CV Flow Coefficient is approximately 94.87.