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I.S. EN 60534-2-5:2003

Current
Current

The latest, up-to-date edition.

INDUSTRIAL-PROCESS CONTROL VALVES - PART 2-5: FLOW CAPACITY - SIZING EQUATIONS FOR FLUID FLOW THROUGH MULTISTAGE CONTROL VALVES WITH INTERSTAGE RECOVERY
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2003

Preview

For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.

Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Installation
5 Symbols
6 Sizing equations for incompressible fluids
  6.1 Turbulent flow
7 Sizing equations for compressible fluids
  7.1 Turbulent flow
8 Determination of correction factors
  8.1 Piping geometry factor, F[p]
  8.2 Liquid pressure recovery factors F[L] or F[LP]
  8.3 Liquid critical pressure ratio factor F[F]
  8.4 Expansion factor Y
  8.5 Pressure differential ratio factor x[T] or x[TP]
  8.6 Specific heat ratio factor F[gamma]
  8.7 Compressibility factor Z
  8.8 Stage interaction factor k
  8.9 Reheat factor r
Annex A (informative) Physical constants [a]
Annex B (informative) Examples of sizing calculations
Bibliography

Provides equations for predicting the flow of compressible and incompressible fluids through multistage control valves.

DevelopmentNote
For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
DocumentType
Standard
Pages
70
PublisherName
National Standards Authority of Ireland
Status
Current

Standards Relationship
NF EN 60534-2-5 : 2004 Identical
EN 60534-2-5:2003 Identical
SN EN 60534-2-5 : 2003 Identical
IEC 60534-2-5:2003 Identical
DIN EN 60534-2-5:2004-03 Identical
BS EN 60534-2-5:2003 Identical

EN 60534-1:2005 Industrial-process control valves - Part 1: Control valve terminology and general considerations
EN 60534-2-1:2011/AC:2015 INDUSTRIAL-PROCESS CONTROL VALVES - PART 2-1: FLOW CAPACITY - SIZING EQUATIONS FOR FLUID FLOW UNDER INSTALLED CONDITIONS (IEC 60534-2-1:2011)
EN 60534-2-3:2016 Industrial-process control valves - Part 2-3: Flow capacity - Test procedures
IEC 60534-2-3:2015 Industrial-process control valves - Part 2-3: Flow capacity - Test procedures
IEC 60534-2-1:2011 Industrial-process control valves - Part 2-1: Flow capacity - Sizing equations for fluid flow under installed conditions
IEC 60534-1:2005 Industrial-process control valves - Part 1: Control valve terminology and general considerations

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