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Control valve - CV at 100% open 3

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sheiko

Chemical
May 7, 2007
422
Hello people,

How can i obtain the the CV value of a control valve at 100% open, knowing the CV value at 80% open for example?

Thanks

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I would take them to be at 100% unless otherwise specified.

Patricia Lougheed

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Yes, those are for 100% open but again the value is dependent on the trim selection.

In a previous version of ISA S75.01, they gave approximate 100% cv values as a function of d^2. I believe they removed this in later editions.

I2I
 
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