IEC 60534-4:2021

Industrial-process control valves - Part 4: Inspection and routine testing

IEC 60534-4:2021 specifies the requirements for the inspection and routine testing of control valves manufactured in conformity with the other parts of IEC 60534. This document is applicable to valves with pressure ratings not exceeding Class 2500. The requirements for actuators apply only to pneumatic actuators. This document does not apply to the types of control valves where radioactive service, fire safety testing, or other hazardous service conditions are encountered. If a standard for hazardous service conflicts with the requirements of this document, the standard for hazardous service should take precedence.

Vannes de régulation des processus industriels - Partie 4: Inspection et essais individuels de série

L’IEC 60534-4:2021 spécifie les exigences relatives à l'inspection et aux essais individuels de série des vannes de régulation fabriquées conformément aux autres parties de l’IEC 60534. Le présent document s'applique aux vannes dont les valeurs assignées de pression n'excèdent pas celles de la classe 2500. Les exigences pour les actionneurs ne s'appliquent qu'aux actionneurs pneumatiques. Le présent document ne s'applique pas aux types de vannes de régulation destinées à fonctionner dans des applications radioactives, des installations de sécurité à l'épreuve du feu ou pour d'autres conditions de fonctionnement dangereuses. Si une norme sur le fonctionnement dangereux est en contradiction avec les exigences du présent document, il convient de faire prévaloir la norme sur le fonctionnement dangereux.

General Information

• Status: Published
• Publication Date: 15-Dec-2021
• ICS: 23.060 - Valves
• ICS: 29.140.40 - Luminaires
• Technical Committee: SC 65B - Measurement and control devices
• Drafting Committee: WG 9 - TC 65/SC 65B/WG 9
• Current Stage: PPUB - Publication issued
• Start Date: 07-Jan-2022
• Completion Date: 16-Dec-2021

Relations

• Revises: IEC 60534-4:2006 - Industrial-process control valves - Part 4: Inspection and routine testing
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60534-4 ®
Edition 4.0 2021-12
REDLINE VERSION
INTERNATIONAL
STANDARD
Industrial-process control valves –
Part 4: Inspection and routine testing

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc

If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: [e-mail].
IEC 60534-4 ®
Edition 4.0 2021-12
REDLINE VERSION
INTERNATIONAL
STANDARD
Industrial-process control valves –
Part 4: Inspection and routine testing
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 23.060 ISBN 978-2-8322-4207-0

– 2 – IEC 60534-4:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Requirements . 8
4.1 General . 8
4.2 Hydrostatic test . 9
4.3 Seat leakage test . 9
4.4 Packing test . 10
4.5 Rated valve travel test . 10
4.6 Dead band tests . 10
4.7 Additional tests . 10
5 Tests procedures . 10
5.1 Measuring instruments . 10
5.1.1 General . 10
5.1.2 Pressure measuring instruments . 10
5.1.3 Flow measuring instruments . 10
5.1.4 Travel measuring instruments . 11
5.1.5 Calibration . 11
5.2 Test medium . 11
5.3 Test fixtures . 11
5.4 Hydrostatic test . 11
5.4.1 Removal of internal components .
5.4.2 Test pressure .
5.4.3 Test procedure .
5.4.4 Acceptance criteria .
5.4.5 Exclusions from hydrostatic test .
5.5 Seat leak test . 12
5.5.1 Test medium . 12
5.5.2 Actuator adjustments . 13
5.5.3 Test procedure . 13
5.5.4 Leakage specifications . 14
5.6 Packing test . 16
5.6.1 General . 16
5.6.2 Procedure A . 16
5.6.3 Procedure B . 17
5.7 Rated valve travel test . 17
5.7.1 General . 17
5.7.2 Control valves with positioners . 17
5.7.3 Control valves with spring-opposed actuators without positioners . 18
5.7.4 Control valves with double-acting actuators without positioners . 18
5.8 Dead band tests . 18
5.8.1 General . 18
5.8.2 Test equipment . 18
5.8.3 Test procedure . 18
5.8.4 Acceptance criteria . 19

5.9 Stroking time test . 19
5.9.1 General . 19
5.9.2 Test equipment . 20
5.9.3 Test procedures . 20
Annex A (informative) Example calculations of seat leakage . 21
A.1 General . 21
A.1.1 Overview . 21
A.1.2 Valve description . 21
A.1.3 Test differential pressures . 21
A.1.4 Calculation of rated valve capacity. 21
A.1.5 Calculated maximum allowable seat leakages . 24
A.2 General . 24
A.2.1 Overview . 24
A.2.2 Valve description . 24
A.2.3 Test differential pressure . 24
A.2.4 Calculation of class VI maximum allowable seat leakage . 25
Annex B (informative) Inspection and routine testing checklist (per IEC 60534-4) . 26
Bibliography . 26

Figure 1 – Hysteresis and dead band . 7

Table 1 – Tests . 9
Table 2 – Minimum duration of hydrostatic tests of shell .
Table 2 – Maximum seat leakage for each leakage class . 14
Table 3 – Maximum recommended values of dead band error . 19
Table A.1 – Maximum seat leakage for each leakage class . 24

– 4 – IEC 60534-4:2021 RLV © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL-PROCESS CONTROL VALVES –

Part 4: Inspection and routine testing

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attent
...

IEC 60534-4 ®
Edition 4.0 2021-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial-process control valves –
Part 4: Inspection and routine testing

Vannes de régulation des processus industriels –
Partie 4: Inspection et essais individuels de série

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des
questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: [e-mail].
A propos de l'IEC
La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des
Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC
Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la
plus récente, un corrigendum ou amendement peut avoir été publié.

Recherche de publications IEC - IEC online collection - oc.iec.ch
webstore.iec.ch/advsearchform Découvrez notre puissant moteur de recherche et consultez
La recherche avancée permet de trouver des publications IEC gratuitement tous les aperçus des publications. Avec un
en utilisant différents critères (numéro de référence, texte, abonnement, vous aurez toujours accès à un contenu à jour
comité d’études, …). Elle donne aussi des informations sur adapté à vos besoins.
les projets et les publications remplacées ou retirées.

Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
Le premier dictionnaire d'électrotechnologie en ligne au
Restez informé sur les nouvelles publications IEC. Just
monde, avec plus de 22 000 articles terminologiques en
Published détaille les nouvelles publications parues.
anglais et en français, ainsi que les termes équivalents dans
Disponible en ligne et une fois par mois par email.
16 langues additionnelles. Egalement appelé Vocabulaire

Electrotechnique International (IEV) en ligne.
Service Clients - webstore.iec.ch/csc

Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
[e-mail].
IEC 60534-4 ®
Edition 4.0 2021-12
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Industrial-process control valves –

Part 4: Inspection and routine testing

Vannes de régulation des processus industriels –

Partie 4: Inspection et essais individuels de série

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 23.060 ISBN 978-2-8322-1059-3

– 2 – IEC 60534-4:2021 © IEC 2021
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Requirements . 8
4.1 General . 8
4.2 Hydrostatic test . 9
4.3 Seat leakage test . 9
4.4 Packing test . 10
4.5 Rated valve travel test . 10
4.6 Dead band tests . 10
4.7 Additional tests . 10
5 Tests procedures . 10
5.1 Measuring instruments . 10
5.1.1 General . 10
5.1.2 Pressure measuring instruments . 10
5.1.3 Flow measuring instruments . 10
5.1.4 Travel measuring instruments . 10
5.1.5 Calibration . 11
5.2 Test medium . 11
5.3 Test fixtures . 11
5.4 Hydrostatic test . 11
5.5 Seat leak test . 11
5.5.1 Test medium . 11
5.5.2 Actuator adjustments . 12
5.5.3 Test procedure . 12
5.5.4 Leakage specifications . 12
5.6 Packing test . 14
5.6.1 General . 14
5.6.2 Procedure A . 14
5.6.3 Procedure B . 15
5.7 Rated valve travel test . 15
5.7.1 General . 15
5.7.2 Control valves with positioners . 15
5.7.3 Control valves with spring-opposed actuators without positioners . 16
5.7.4 Control valves with double-acting actuators without positioners . 16
5.8 Dead band tests . 16
5.8.1 General . 16
5.8.2 Test equipment . 16
5.8.3 Test procedure . 16
5.8.4 Acceptance criteria . 17
5.9 Stroking time test . 17
5.9.1 General . 17
5.9.2 Test equipment . 18
5.9.3 Test procedures . 18
Annex A (informative) Example calculations of seat leakage . 19

A.1 General . 19
A.1.1 Overview . 19
A.1.2 Valve description . 19
A.1.3 Test differential pressures . 19
A.1.4 Calculation of rated valve capacity. 19
A.1.5 Calculated maximum allowable seat leakages . 22
A.2 General . 22
A.2.1 Overview . 22
A.2.2 Valve description . 22
A.2.3 Test differential pressure . 22
A.2.4 Calculation of class VI maximum allowable seat leakage . 23
Annex B (informative) Inspection and routine testing checklist (per IEC 60534-4) . 24
Bibliography . 25

Figure 1 – Hysteresis and dead band . 7

Table 1 – Tests . 9
Table 2 – Maximum seat leakage for each leakage class . 13
Table 3 – Maximum recommended values of dead band . 17
Table A.1 – Maximum seat leakage for each leakage class . 22

– 4 – IEC 60534-4:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL-PROCESS CONTROL VALVES –

Part 4: Inspection and routine testing

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation
...