pipeflowcalculations.com on facebook

Control valve sizing and flow coefficient Cv calculation

Related calculators: Gas control valve

Pipe flow calculator features

  • Pack of sixteen pipe flow calculators in one application
  • Productive tool for every day flow calculations
  • Used by thousands of engineers, students, professors and other professionals every day
  • Multiple calculation scenarios for each calculator
  • Easy switch between metric and imperial units
  • Copy and save calculation results
  • Every calculator is backed with used theory and equations
  • Always use the latest version with automatic update
  • Stay connected with developer and community through social channels

CLICK IMAGE TO START THE CALCULATOR

Requirements

Java Runtime Environment – JRE version 1.8+
(install latest JRE now)

OR without Java
Download and run calculators pack - for Windows64bit users only.

Register and activate account on pipeflowcalculations.net

Select subscription plan

Read detailed instructions and requirements

Calculators for download in one pack, Java required.
For desktop/laptop users (Windows, MacOS, Linux)

download and start
*no administrator's roles required

No Java? It's a shame…
BUT it's not the end of the word!

If you are having Windows 64bit on your computer you can download and run calculators even without administrator role on your computer. This kind of calculator deployment is great if you are on the corporate network and if you don't have authority to install anything on your computer.

If you are not Windows 64bit user you can still use some calculators on my other web site at pipeflowcalculations.net .
There you can try server side, mobile friendly, pipe flow calculators that require nothing more than a web browser and Internet connection

Control valve sizing is based on flow coefficient Cv calculation. Flow coefficient Cv calculation is made for required flow rate and related pressure drop in control valve. With flow coefficient Cv calculated, size of control valve can be selected, or two control valves from different manufacturers can be compared in terms of flow capacity for certain pressure drop and the same control valve size.

Flow coefficient Cv calculation is based on the relation between pressure drop and flow rate in control valve which is for complete turbulent flow following power law where flow coefficient Cv is the proportional constant. Flow coefficient Cv is determined experimentally by control valve manufacturers.

Flow coefficient of control valve Cv is expressed as the flow rate of water in gpm u.s. (m3/h) for a pressure drop of 1 psi (1 bar) across a flow passage (flow coefficient: Cv-imperial, Kv-metric).

Control valves sizing calculator you can use to calculate maximum flow rate through control valve for given pressure drop and known flow coefficient of control valve Cv.

Control valve calculator can be used for turbulent flow of water or other incompressible fluid. For compressible flow of gases and steam gas flow coefficient Cg should be calculated.

Flashing and cavitation and chocked flow may reduce the control valve capacity and it is not in this version of control valve calculator.

For compressible flow - for gases, you should use gas control valve calculator, as this control valve calculator is for incompressible flow.

Can't see the calculator? Click here to find out why.