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Valve Cv Data: butterfly concentric
20 to 24
Valve flow coefficient (Cv/Kv) data by valve type and size for control valve sizing and selection per ISA 75.01
| valve type | size in | Cv (gpm) | Fl (dimensionless) | Kv (m3/h) | Xt (dimensionless) | body material | characteristic | size mm (mm) | standard |
|---|---|---|---|---|---|---|---|---|---|
| butterfly concentric | 20 | 12,000 | 0.69 | 10,380.62 | 0.56 | cast iron | equal percentage | 500 | ISA 75.01.01-2012; Emerson Fisher Handbook |
| butterfly concentric | 24 | 18,000 | 0.7 | 15,570.94 | 0.57 | cast iron | equal percentage | 600 | ISA 75.01.01-2012; Emerson Fisher Handbook |
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