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  • IEC 60534-2-5:2003

    Withdrawn A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

    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, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Withdrawn date:  31-12-2021

    Language(s):  English - French

    Published date:  05-09-2003

    Publisher:  International Electrotechnical Committee

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    Table of Contents - (Show below) - (Hide below)

    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

    Abstract - (Show below) - (Hide below)

    Gives equations for predicting the flow of compressible and incompressible fluids through multistage control valves. Is based on standard hydrodynamic equations for Newtonian incompressible fluids. Is applicable only to those designs of multistage multipath control valves and multistage single path control valves.

    General Product Information - (Show below) - (Hide below)

    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Withdrawn

    Standards Referenced By This Book - (Show below) - (Hide below)

    CEI EN 60534-7 : 2012 INDUSTRIAL-PROCESS CONTROL VALVES - PART 7: CONTROL VALVE DATA SHEET
    EN 1349:2009 Industrial process control valves
    BS EN 1349:2009 Industrial process control valves
    BS EN 60534-7:2010 Industrial-process control valves Control valve data sheet
    I.S. EN 1349:2009 INDUSTRIAL PROCESS CONTROL VALVES
    UNI EN 1349 : 2010 INDUSTRIAL PROCESS CONTROL VALVES
    07/30174895 DC : DRAFT DEC 2007 BS EN 60534-7 ED.2 - INDUSTRIAL-PROCESS CONTROL VALVE - PART 7: CONTROL VALVE DATA SHEET
    NF EN 60534-7 : 2012 INDUSTRIAL-PROCESS CONTROL VALVES - PART 7: CONTROL VALVE DATA SHEET
    09/30201712 DC : 0 BS EN 60534-7 - INDUSTRIAL-PROCESS CONTROL VALVE - PART 7: CONTROL VALVE DATA SHEET
    08/30179182 DC : DRAFT MAY 2008 BS EN 1349 - INDUSTRIAL PROCESS CONTROL VALVES
    I.S. EN 60534-7:2010 INDUSTRIAL-PROCESS CONTROL VALVES - PART 7: CONTROL VALVE DATA SHEET
    IEC 60534-7:2010 Industrial-process control valves - Part 7: Control valve data sheet
    EN 60534-7:2010 Industrial-process control valves - Part 7: Control valve data sheet

    Standards Referencing This Book - (Show below) - (Hide below)

    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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