Valve Flow Coefficient Calculator
Free calculate valve flow coefficient (cv) for control valves. determine flow rate based on pressure drop and valve characteristics.
Input Parameters
Water: 1.0, Air: 0.0012
Results
Enter parameters to calculate
Valve Flow Coefficient Formula
Cv Calculation
Cv = Q × √(SG / ΔP)
Where Q = flow rate (GPM), SG = specific gravity, ΔP = pressure drop (psi)
Flow Rate
Q = Cv × √(ΔP / SG)
From Cv and pressure drop
Cv Definition
Flow in GPM of water at 60°F with 1 psi pressure drop
Standard industry measurement
Typical Cv Values
- • Small valves: 1-10
- • Medium valves: 10-100
- • Large valves: 100-1000+
- • Depends on valve size and type