CENELEC
Project
| Reference | EN 60534-2-1:2011 |
|---|---|
| Title | Industrial-process control valves - Part 2-1: Flow capacity - Sizing equations for fluid flow under installed conditions |
| Project Number | 22368 |
| Abstract/Scope | IEC 60534-2-1:2011 includes equations for predicting the flow of compressible and incompressible fluids through control valves. The equations for incompressible flow are based on standard hydrodynamic equations for Newtonian incompressible fluids. They are not intended for use when non-Newtonian fluids, fluid mixtures, slurries or liquid-solid conveyance systems are encountered. The equations for incompressible flow may be used with caution for non-vaporizing multi-component liquid mixtures. This second edition cancels and replaces the first edition published in 1998. This edition constitutes a technical revision. It includes the following significant technical changes with respect to the previous edition: - the same fundamental flow model, but changes the equation framework to simplify the use of the standard by introducing the notion of Δpsizing; - changes to the non-turbulent flow corrections and means of computing results; - multi-stage sizing as an Annex. |
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Published
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Status
| Current Stage code | 6060 |
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| Current Stage code date | 2011-05-20 |
| Current Stage code deadline | 2012-02-04 |
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Details
| IEC Technical Body | IEC/SC 65B |
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| Reference Document | IEC 60534-2-1:2011 (EQV) |
| ICS | 23.060.40 - Pressure regulators 25.040.40 - Industrial process measurement and control |
| Keywords | Industrial process; Valve; Flow capacity; Sizing; Fluid flow |
| Note | Supersedes EN 60534-2-1:1998 |
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History
Implementation Dates
| date of Ratification (DOR) (1) | 2011-05-04 |
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| date of Availability (DAV) (2) | 2011-05-20 |
| date of Announcement (DOA) (3) | 2011-08-04 |
| date of Publication (DOP) (4) | 2012-02-04 |
| date of Withdrawal (DOW) (5) | 2014-05-04 |
Relations
| Supersedes | EN 60534-2-1:1998 |
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| Superseded by | |
| Normative reference (6) |
EN 60534-1:2005
EN 60534-2-3:1998 |
(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved
(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat
(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level
(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement
(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn
(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.
