I.S. EN 60534-2-5:2003
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
Hardcopy , PDF
English
01-01-2003
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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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