The Cv’S A Valve Property And Is Defined As Follows. €ŒThe Flow Coefficient Cv States The Flow Capapcity Of A Valve In U.S. Gallons Per Minute Of Water At A Standard Temperature Of 60°F (15.6° C) That Will Flow Through The Valve With A Pressure Loss Of One Pound Per Square Inch At A Specific Opening Positionâ€. For The Metric System The Analog Value Is Kv Where Measure Unit Are Bar, Kg And Meters. The Cv Show The Quality And Accuracy Of A Valve In Terms Of Pressure Loss, The Highest Values Of Cv Indicate The Highest Quality Of A Valve.
To Measure The Properly Value Of Cv There In Not A Standard Method. VDK Valves R & D Team Has Used Two Different Methods: 1-Using Cv Definition, Through The Means Of A Specifically Built Test Rig, It Has Been Obtained 1Bar Of Pressure Loss And The Flow Has Been Verified With Specific Equipment. Calculation Is Possible To Convert The Measure To Cv. 2-In The Same Machine The Flow Has Been Changed And Different Measure Of Process Loss Has Been Obtained: A Table Has Been Defined And An Average Value Per Each Has Been Calculated.
