Fluid Velocity Considerations - ICEweb

TI-PBM/VELOCITYA ugust 2002 Fluid Velocity ConsiderationsTechnical IInformationSheetIntroductionIn the selection and specification of control valves, many process variables must be carefully composition and thermodynamic properties of the Fluid being throttled is of paramount must be sized differently than liquids, and of course multi-phase streams require special considera-tion. Other properties may also place special demands on the control valve, including the Fluid s corrosivenature, the presence of solids and any erosion that may result, or even if the liquid exhibits violent phasechange and out-gassing during throttling. All or any one of these characteristics may require changes inthe valve sizing and selection methodology as well as the use of specialty valve designs. One simpleexample is the effect a reduction in process temperature will have upon the well-understood mechanism ofcavitation.

TI-PBM/VELOCITY August 2002 Fluid Velocity Considerations T e c h n i c a l I I n f o r m a t i o n S h e e t Introduction In the selection and specification of control valves, many process variables must be carefully considered.

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