EN 60534-8-4:2015

SLOVENSKI STANDARD
01-julij-2016
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Industrial-process control valves - Part 8-4: Noise considerations - Prediction of noise
generated by hydrodynamic flow (IEC 60534-8-4:2015)
Stellventile für die Prozessregelung - Teil 8-4: Geräuschbetrachtungen -
Vorausberechnung der Geräuschemission für flüssigkeitsdurchströmte Stellventile (IEC
60534-8-4:2015)
Vannes de régulation des processus industriels - Partie 8-4: Considérations sur le bruit -
Prévisions du bruit généré par un écoulement hydrodynamique (IEC 60534-8-4:2015)
Ta slovenski standard je istoveten z: EN 60534-8-4:2015
ICS:
17.140.20 Emisija hrupa naprav in Noise emitted by machines
opreme and equipment
23.060.40 7ODþQLUHJXODWRUML Pressure regulators
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60534-8-4

NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2015
ICS 17.140.20; 23.060.40; 25.040.40 Supersedes EN 60534-8-4:2005
English Version
Industrial-process control valves - Part 8-4: Noise considerations -
Prediction of noise generated by hydrodynamic flow
(IEC 60534-8-4:2015)
Vannes de régulation des processus industriels -  Stellventile für die Prozessregelung -
Partie 8-4: Considérations sur le bruit - Prévisions du bruit Teil 8-4: Geräuschbetrachtungen - Vorausberechnung der
généré par un écoulement hydrodynamique Geräuschemission für flüssigkeitsdurchströmte Stellventile
(IEC 60534-8-4:2015) (IEC 60534-8-4:2015)
This European Standard was approved by CENELEC on 2015-10-20. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 60534-8-4:2015 E
European foreword
The text of document 65B/1005/FDIS, future edition 3 of IEC 60534-8-4, prepared by SC 65B
"Measurement and control devices", of IEC/TC 65 "Industrial-process measurement, control and
automation" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at (dop) 2016-07-20
national level by publication of an identical national
standard or by endorsement
(dow) 2018-10-20
• latest date by which the national standards conflicting with
the document have to be withdrawn

This document supersedes EN 60534-8-4:2005.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
Endorsement notice
The text of the International Standard IEC 60534-8-4:2015 was approved by CENELEC as a
European Standard without any modification.
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When an International Publication has been modified by common modifications, indicated by (mod),
the relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is
available here: www.cenelec.eu.

Publication Year Title EN/HD Year
IEC 60534-1 -  Industrial-process control valves - EN 60534-1 -
Part 1: Control valve terminology and
general considerations
IEC 60534-2-3 -  Industrial-process control valves - EN 60534-2-3 -
Part 2-3: Flow capacity - Test procedures
IEC 60534-8-2 -  Industrial-process control valves - EN 60534-8-2 -
Part 8-2: Noise considerations - Laboratory
measurement of noise generated by
hydrodynamic flow through control valves
IEC 60534-8-3 -  Industrial-process control valves - EN 60534-8-3 -
Part 8-3: Noise considerations - Control
valve aerodynamic noise prediction method

IEC 60534-8-4 ®
Edition 3.0 2015-09
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial-process control valves –

Part 8-4: Noise considerations – Prediction of noise generated by hydrodynamic

flow
Vannes de régulation des processus industriels –

Partie 8-4: Considérations sur le bruit – Prévisions du bruit généré par un

écoulement hydrodynamique
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.140.20; 23.060.40; 25.040.40 ISBN 978-2-8322-2879-1

– 2 – IEC 60534-8-4:2015 © IEC 2015
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Symbols . 7
5 Preliminary calculations . 9
5.1 Pressures and pressure ratios . 9
5.2 Characteristic presssure ratio x . 9
Fz
5.3 Valve style modifier F . 10
d
5.4 Jet diameter D . 10
j
5.5 Jet velocity. 10
5.6 Mechanical power W . 10
m
6 Noise predictions . 10
6.1 Internal sound pressure calculation . 10
6.2 Transmission loss . 13
6.3 External sound pressure calculation . 14
7 Multistage trim . 14
7.1 General . 14
7.2 Preliminary calculations . 15
7.3 Prediction of noise level . 15
7.3.1 General criteria . 15
7.3.2 Multistage devices (see Figures 1 and 3) . 15
7.3.3 Fixed multistage devices with increasing flow areas (see Figure 2) . 16
Annex A (informative) Examples of given data . 21
Bibliography . 31

Figure 1 – Examples of multistage trim in globe and rotary valves . 16
Figure 2 – Example of fixed multistage device with increasing flow area . 17
Figure 3 – Example of multistage trim in globe valve . 17
Figure 4 – Globe valve (Cage trim, V-port plug) . 18
Figure 5 – Globe valves (parabolic-plug) . 18
Figure 6 – Multihole trims. 19
Figure 7 – Eccentric rotary valves . 19
Figure 8 – Butterfly valves . 20
Figure 9 – Segmented ball valve – 90°travel . 20
Figure A.1 – The influence of the x value on prediction accuracy . 30
Fz
Table 1 – Numerical constants N . 9
Table 2 – Typical values of Aη . 11
Table 3 – Indexed third octave center frequencies and “A” weighting factors. 13
Table A.1 – Calculation: Examples 1 to 3 . 22

IEC 60534-8-4:2015 © IEC 2015 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL-PROCESS CONTROL VALVES –

Part 8-4: Noise considerations –
Prediction of noise generated by hydrodynamic flow

FOREWORD
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