- Cv Flow Calculator
Pneumatic Valve Cv Flow Calculator
Determine valve flow coefficient (Cv), flow rate (Q), or pressure drop (ΔP) for your pneumatic systems. This interactive solver also provides quick equivalents for Metric Flow Factor (Kv) and Sonic Conductance (C) to assist in accurate valve sizing.
Flow Parameters
Calculation Mode
Input Values
Unit/m
bar / psi
Calculated Flow Rate (Q)
Formula Result
Flow Rate
0.00
Based on user inputs
Valve Equivalents
Standard Conversions
Metric Flow Factor (Kv)
0.00
Kv ≈ Cv × 0.865
Sonic Conductance (C)
0.00
C ≈ Cv ÷ 5 (Pneumatic Est.)
Engineering Reference
General Flow Equation
Q = Cv × √(ΔP × SG)
Solving for Cv
Cv = Q / √(ΔP × SG)
- Q = Flow Rate
- Cv = Valve Flow Coefficient
- ΔP = Pressure Drop (Inlet - Outlet)
- SG = Specific Gravity (Air = 1.0)