Carrier 42 SERIES CV FACTOR vs WATER PRESSURE DROP, Cv Factor, Graph Example, Formula Example

CV FACTOR vs WATER PRESSURE DROP

CV FACTOR:

The ¯ow rate in gallons per minute (gpm) through a piping component when the pressure drop (DP) in pounds per square inch (psi) across the component is 1.0 (psi).

Pressure drop (ft-H2O) = 2.31 x psi (pressure drop)

GRAPH EXAMPLE:

DP for 2.0 gpm through a component with a CV of 1.0 is 4.0 psi x 2.31 = 9.24 ft-H2O

FORMULA EXAMPLE:
DP (ft-H2O) =	(gpm)2	x 2.31 =	(2.0)2	x 2.31 = 9.24 ft-H2O
	(Cv)2		(1.0)2

TOTAL PRESSURE DROP is the Sum of the pressure drop of all piping and components in the water ¯ow path.

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