[ioncube]

I have Chinese valves where from nameplate I can get Cv @100% open & that its Equal%.

Now I generated a spreadsheet model which is fairly simple & then used 'Goal Seek' feature to iterate values such that I get stated Cv at 100% opening.

I am uploading procedure that I followed (this document also has a small video file)
I am also attaching spreadsheet file as well.

External server zip file: https://www.mediafire.com/file/8qhwt7riweby457/Characteristic+Curve+Generation.zip/file

The idea is to generate a curve like the one attached