I.S. EN 60534-2-2:1993
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.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 - FLOW CAPACITY - SIZING EQUATIONS FOR COMPRESSIBLE FLUID FLOW UNDER INSTALLED CONDITIONS
Hardcopy , PDF
06-09-2016
English
08-31-1993
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)
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