NF EN 60534-2-5 : 2004
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
12-01-2013
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
Annex ZA (normative) Normative references to international
publications with their corresponding European
publications
Bibliography
Provides equations for predicting the flow of compressible and incompressible fluids through multistage control valves.
| DevelopmentNote |
Indice de Classement: C46-507. PR NF EN 60534 2-5 May 2002 (06/2002)
|
| DocumentType |
Standard
|
| PublisherName |
Association Francaise de Normalisation
|
| Status |
Current
|
| Standards | Relationship |
| DIN EN 60534-2-5:2004-03 | Identical |
| I.S. EN 60534-2-5:2003 | Identical |
| EN 60534-2-5:2003 | Identical |
| IEC 60534-2-5:2003 | Identical |
| BS EN 60534-2-5:2003 | Identical |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.