Transcription of HANDBOOK FOR CONTROL VALVE SIZING - Parcol …
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HANDBOOK FOR CONTROL VALVE SIZING - Parcol …
Bulletin 1-I HANDBOOK FOR CONTROL VALVE SIZING TECHNICAL BULLETIN 1-I HANDBOOK FOR CONTROL VALVE SIZING Parcol 1 HANDBOOK FOR CONTROL VALVE SIZING NOMENCLATURE SIZING AND SELECTION OF CONTROL valves 0 NORMATIVE REFERENCES 1 PROCESS DATA 2 VALVE SPECIFICATION 3 FLOW COEFFICIENT Flow coefficient KV (metric units) Flow coefficient CV (imperial units) Standard test conditions 4 SIZING EQUATIONS SIZING equations for incompressible fluids (turbulent flow) SIZING equations for compressible fluids (turbulent flow) SIZING equations for two-phase flows SIZING equations for non-turbulent flow 5 PARAMETERS OF SIZING EQUATIONS Liquid pressure recovery factor FL Coefficient of incipient cavitation xFZ and coefficient of constant cavitation Kc Piping g
PARCOL HANDBOOK FOR CONTROL VALVE SIZING – TECHNICAL BULLETIN 1-I 4 3. FLOW COEFFICIENT The flow coefficient is the coefficient used to calculate the flow rate of a control valve under given conditions.
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