Kv (Also see Cv)
The Flow Factor - Kv (commonly used outside U.S.) Kv is the metric equivalent of the flow coefficient - Cv - and it is based on the SI-system

The flow factor -Kv- is defined as the flow of water through a valve at 20 oC in cubic meters per hour with a pressure drop of 1 kg/cm2 (1 bar)

Conversion between Flow Coefficient Cv and Flow Factor Kv can be expressed as:

Cv = 1.16 Kv (1)
Kv = 0.853 Cv (2)

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