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Converting Festo's flow rate spec to Cv

Nate Laverdure

By: Nate Laverdure
New: 11-29-2018 08:49 PM
Updated: 11-29-2018 08:58 PM
Total downloads: 14 times


Festo gives the flow rate through their solenoid valves in terms of "standard nominal flow rate". What does this mean?

Festo gives the flow rate through their solenoid valves in terms of "standard nominal flow rate". What does this mean? How does it compare with other valves on the market?

Here's a spreadsheet that converts the specified flow rate (which is actually a mass flow rate even though it's in units of volume/time) into a flow coefficient or Cv. This lets you directly compare the size of the valve to other vendors' stuff.

The attached example is for the KOP FESTO solenoid valve, the VUVG-LK10-B52-T-M7-1H2L-S (aka part number 8042548). This is the valve that's available right now on FIRST Choice here. Here's the spec sheet which doesn't list a Cv, but instead gives a flow rate of 340 liters/minute of dry air at standard temperature and pressure ("STP") when the inlet pressure is 6 bar and the outlet pressure is 5 bar. The Cv of this valve is 0.53.

View the Google spreadsheet here.

Attached Files

  • pdf Cv calculation for KOP Festo solenoid valve

    TH2363_ Festo _standard nominal flow rate_ to Cv calc.pdf

    downloaddownload file

    uploaded: 11-29-2018 08:49 PM
    filetype: pdf
    filesize: 76.61kb
    downloads: 12



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