Valve Cv Data: diaphragm
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) |
|---|---|---|---|---|---|---|---|---|
| diaphragm | 0.5 | 4 | 0.85 | 3.46 | 0.68 | rubber_lined | linear | 15 |
| diaphragm | 0.75 | 8 | 0.85 | 6.92 | 0.68 | rubber_lined | linear | 20 |
| diaphragm | 1 | 15 | 0.85 | 12.98 | 0.68 | rubber_lined | linear | 25 |
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