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Zeta value 1

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JimCasey

Mechanical
Joined
Oct 29, 2003
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924
Location
US
My European affiliates have asked several times for Zeta values. It is supposed to be some sort of flow restriction index, but unlike the inverse of a Cv value, Zeta can be the same value for different sizes of valves.

Can someone please enlighten me as to the definition of Zeta, and how I might tabulate it?

TIA
Jim
 
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