Please select media

Flow Coefficient - Cv - for Liquids (Metric)

Cv = 11.6 q (SG / ΔP)1/2         (1b)


q = water flow (m3/h)

SG = specific gravity (1 for water)

ΔP = pressure drop (kPa)

For liquids the flow coefficient - Cv - expresses the flow capacity in gallons per minute (GPM) of 60oF water with a pressure drop of 1 psi (lb/in2).

STEP 1 : Select Unit
STEP 2 : Select Liquid
STEP 3 : Enter Specific Gravity (if User Defined)
  Specific Gravity
STEP 4 : Add flow rate and pressure drop
  Flow Rate
 m3/hUS gal per minute
  Pressure Differential (ΔP) kPa psig
  Flow Coefficient Kv Cv =

Flow Coefficient - Cv - for Air and other Gases

Cv = q [SG (T + 460)]1/2/ [1360 (dp po)1/2]


dp = (pi - po)

po = outlet gas absolute pressure (psia)

STEP 1 : Select Unit
STEP 2 : Select Gas
STEP 3 : Enter Gas Temperature, Inlet Pressure, Outlet Pressure and Specific Gravity
  For proper mass flow conversion (Kg/HR to m3/HR), enter Specific Gravity at standard atmospheric conditions (20oC / 70oF)
  Temperature   oCoF
  Inlet Pressure BARpsia
  Outlet Pressure
(must be > 0)
  Specific Gravity
STEP 4 : Add flow rate
  Flow Rate
 m3/h (Cu. ft./m) (f.a.d)
  Flow Coefficient Kv Cv =
Flow Calcuator - 2 way General Service Valves
STEP 1 : Select Unit
STEP 2 : Select Steam
  Saturated Steam
STEP 3 : Enter Gage Inlet Pressure
  Inlet Pressure BAR mmH2O
STEP 4 : Select Parameter to be solved for and Enter Remaining Two
  Flow Rate Kg/HR
  Pressure Drop BAR mmH2O
  Flow Coefficient Kv

About Us

Solenoid Solutions works exclusively with OEMs to provide high-quality solenoid valves and multi valve manifolds in large volume.

Contact Info

Solenoid Solutions Inc.
  • 2251 Manchester RoadErie, PA 16506
  • (888) 825-8405
  • (814) 833-5439
  • [email protected]
Made in the USA
Made in the USA

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