I.S. EN 60534-2-2:1993
Withdrawn
INDUSTRIAL-PROCESS CONTROL VALVES - FLOW CAPACITY - SIZING EQUATIONS FOR COMPRESSIBLE FLUID FLOW UNDER INSTALLED CONDITIONS
Hardcopy , PDF
English
08-31-1993
06-09-2016
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.
National foreword
Cooperating organizations
Specification
1 Scope
2 Definitions
3 Installation
4 Nomenclature
5 Sizing equations
6 Piping geometry factor FP
7 Expansion factor Y
8 Pressure differential ratio factor xT or xTP
9 Specific heat ratio factor F gamma
10 Compressibility factor Z
Appendices
A Rigorous expression for the expansion factor Y
B Other sizing equations
Tables
I Numerical constants N
II Representative xT values for full size trim at full
rated opening
AI Values of gamma and sigma gamma
BI Numerical constants N
Figures
1 Pressure tap locations
AI Expansion factor vs. pressure drop ratio for widely
differing values of Fg (for gamma = 1.4, air)
Covers equations suitable for use in sizing industrial valves when the flowing media are compressible fluids. The equations are for use with gas or vapour and are not intended for use with multiphase streams.
| DocumentType |
Standard
|
| Pages |
54
|
| PublisherName |
National Standards Authority of Ireland
|
| Status |
Withdrawn
|
| Standards | Relationship |
| IEC 60534-2-2:1980 | Identical |
| BS EN 60534-2-2:1993 | Identical |
| DIN EN 60534-2-2:1995-01 | Identical |
| EN 60534-2-2:1993 | Identical |
| UNE-EN 60534-2-2:1994 | Identical |
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