EN ISO 5211:2023

SLOVENSKI STANDARD
01-december-2023
Industrijski ventili - Pritrditve zasučnih pogonov na ventilih (ISO 5211:2023)
Industrial valves - Part-turn actuator attachments (ISO 5211:2023)
Industriearmaturen - Anschlüsse von Drehantrieben für Armaturen (ISO 5211:2023)
Robinetterie industrielle - Raccordement des actionneurs à fraction de tour (ISO
5211:2023)
Ta slovenski standard je istoveten z: EN ISO 5211:2023
ICS:
23.060.01 Ventili na splošno Valves in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 5211
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2023
EUROPÄISCHE NORM
ICS 23.060.01 Supersedes EN ISO 5211:2017
English Version
Industrial valves - Part-turn actuator attachments (ISO
5211:2023)
Robinetterie industrielle - Raccordement des Industriearmaturen - Anschlüsse von Drehantrieben
actionneurs à fraction de tour (ISO 5211:2023) für Armaturen (ISO 5211:2023)
This European Standard was approved by CEN on 9 September 2023.

CEN 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 CEN
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 CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 5211:2023 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 5211:2023) has been prepared by Technical Committee ISO/TC 153 "Valves" in
collaboration with Technical Committee CEN/TC 69 “Industrial valves” the secretariat of which is held
by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2024, and conflicting national standards shall
be withdrawn at the latest by March 2024.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 5211:2017.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 5211:2023 has been approved by CEN as EN ISO 5211:2023 without any modification.

INTERNATIONAL ISO
STANDARD 5211
Third edition
2023-09
Industrial valves — Part-turn actuator
attachments
Robinetterie industrielle — Raccordement des actionneurs à fraction
de tour
Reference number
ISO 5211:2023(E)
ISO 5211:2023(E)
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 5211:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Maximum flange torques .2
5 Flange dimensions . 3
6 Designation . 5
7 Dimensions and torques .6
7.1 General . 6
7.2 Drive by key(s) . 6
7.3 Drive by parallel or diagonal square head . 9
7.4 Drive by flat head . 10
7.5 Drive by improved flat head .12
7.6 Drive by involute spline . 13
7.7 Drive by bi-square . 14
8 Position of driven components at interface below part-turn actuator .15
8.1 Drive by key(s) . 15
8.2 Drive by parallel or diagonal square head or bi-square . 17
8.3 Drive by flat head . 18
9 Dowel pins .18
Annex A (informative) Explanation of calculations .20
Annex B (normative) Dimensions of keys and keyways .22
Bibliography .28
iii
ISO 5211:2023(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use
of (a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received
notice of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 153, Valves, in collaboration with the
European Committee for Standardization (CEN) Technical Committee CEN/TC 69, Industrial valves, in
accordance with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 5211:2017), which has been technically
revised.
The main changes are as follows:
— dimensions and tolerances for keys and keyways were added in a new Annex B;
— a reference to the new Annex B was added in 7.2;
— editorial changes were made.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
ISO 5211:2023(E)
Introduction
The purpose of this document is to establish certain basic requirements for the attachment of part-turn
actuators, in order to define the interface between actuator and valve.
This document is, in general, considered in conjunction with the specific requirements which may be
agreed between the parties concerned.
NOTE 1 In this document, the term “valve” can also be understood to include “valve with an intermediate
support” [see Figure 1 b)].
NOTE 2 When a combination of a multi-turn actuator and separate part-turn gearbox is coupled to form a
part-turn actuator, the multi-turn attachment to the gearbox is in accordance with ISO 5210:2023, Figures 1 c)
and 1 d). A combination of a multi-turn actuator with integral part-turn gearbox supplied as a part-turn actuator
is in accordance with Figures 1a) and 1b).
a) Direct interface b) Intermediate sup- c) Direct interface d) Intermediate support
port interface (when combination of interface (when combi-
a multi-turn actuator nation of a multi-turn
and a gearbox) actuator and a gearbox)
Key
1 part-turn actuator 5 gearbox
2 interface
...