Carrier 42C Series Product Data page 30

Application data (cont)
C FACTOR:
V
The flow rate in gallons per minute (gpm) through a piping component when the pressure drop (P) in pounds per square inch (psi)
across the component is 1.0 (psi).
Pressure drop (ft-H
2
GRAPH EXAMPLE:
P for 2.0 gpm through a component with a C
FORMULA EXAMPLE:
(gpm)
P (ft-H
O) =
2
2
(C )
v
TOTAL PRESSURE DROP is the Sum of the pressure drop of all piping and components in the water flow path.
30
Cv FACTOR VS WATER PRESSURE DROP
O) = 2.31 x psi (pressure drop)
of 1.0 is 4.0 psi x 2.31 = 9.24 ft-H
V
2 (2.0) 2
x 2.31 = x 2.31 = 9.24 ft-H
2
(1.0)
O
2
O
2