Transcription of HANDBOOK FOR CONTROL VALVE SIZING - Parcol …
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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 geometry factor FP Combined liquid pressure recovery factor and piping geometry factor of a CONTROL VALVE with attached fitti
TECHNICAL BULLETIN 1-I – HANDBOOK FOR CONTROL VALVE SIZING PARCOL 5 4. SIZING EQUATIONS Sizing equations allow to calculate a value of the flow coefficient starting from different operating conditions (type of fluid,
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