SIST EN ISO 22109:2026

SLOVENSKI STANDARD
01-maj-2026
Nadomešča:
SIST EN ISO 22109:2020
Industrijski ventili - Gonila za ventile (ISO 22109:2026)
Industrial valves - Gearboxes for valves (ISO 22109:2026)
Industriearmaturen - Armaturengetriebe (ISO 22109:2026)
Robinetterie industrielle - Réducteurs pour appareil de robinetterie (ISO 22109:2026)
Ta slovenski standard je istoveten z: EN ISO 22109:2026
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 22109
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2026
EUROPÄISCHE NORM
ICS 23.060.01 Supersedes EN ISO 22109:2020
English Version
Industrial valves - Gearboxes for valves (ISO 22109:2026)
Robinetterie industrielle - Réducteurs pour appareil de Industriearmaturen - Armaturengetriebe (ISO
robinetterie (ISO 22109:2026) 22109:2026)
This European Standard was approved by CEN on 31 January 2026.

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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22109:2026 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 22109:2026) 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 August 2026, and conflicting national standards shall
be withdrawn at the latest by August 2026.
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 22109:2020.
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 22109:2026 has been approved by CEN as EN ISO 22109:2026 without any modification.

International
Standard
ISO 22109
Second edition
Industrial valves — Gearboxes for
2026-02
valves
Robinetterie industrielle — Réducteurs pour appareil de
robinetterie
Reference number
ISO 22109:2026(en) © ISO 2026
ISO 22109:2026(en)
© ISO 2026
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 22109:2026(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification . 2
4.1 General .2
4.2 Kind of operation .2
4.3 Kind of rotation .2
5 Design requirements . 2
5.1 Endurance .2
5.2 Structural integrity .4
5.3 Self-locking/braking .4
5.4 Mechanical advantage .4
5.4.1 General .4
5.4.2 Manual gearboxes and manual override gearboxes .4
5.4.3 Automated gearboxes .5
5.5 Environmental conditions .5
5.5.1 General .5
5.5.2 Altitude .5
5.5.3 Enclosure protection .5
5.5.4 Corrosion protection .5
5.5.5 Vibration, shock and seismic conditions .6
5.6 Gearbox attachment .6
5.6.1 Part-turn gearboxes .6
5.6.2 Multi-turn gearboxes .6
5.7 Primary closing direction .7
5.8 Other requirements .7
5.8.1 Manual operation .7
5.8.2 Position indicator for part-turn gearboxes .7
5.8.3 End stop for part-turn gearboxes .7
5.8.4 Gearing lubricant .7
5.8.5 Noise .7
6 Optional equipment . 7
7 Type and production test . 8
7.1 General .8
7.2 Type tests .8
7.3 Control of production process .8
8 Marking . . 9
8.1 Mandatory markings .9
8.2 Optional markings .9
9 Documentation . 10
9.1 General .10
9.2 Mandatory documentation .10
9.3 Optional documentation .10
10 Packaging. 10
Annex A (normative) Endurance test procedure .11
Annex B (informative) Load profiles .12
Bibliography . 14

iii
ISO 22109:2026(en)
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 document 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 second edition cancels and replaces the first edition (ISO 22109:2020), which has been technically
revised.
The main changes are as follows:
— the rated torques 32 001 to 250 000 were added to Table 2;
— the mechanical advantage for gearboxes other than worm gearboxes was added to 5.4.2 and 5.4.3;
— the mechanical advantage along the stroke has been changed to above 80 % of the initial values in
Clause A.5;
— 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
International Standard ISO 22109:2026(en)
Industrial valves — Gearboxes for valves
1 Scope
This document specifies basic requirements for gearboxes to operate industrial valves for manual and
automated on/off and modulating duties, including manual override gearboxes. It includes guidelines for
classification, design and methods for conformity assessment.
This document does not cover gear systems which are an integral part in the design of valves and subsea
gearboxes.
Other requirements or conditions of use different from those indicated in this document are agreed between
the purchaser and the manufacturer or supplier (first party) prior to order.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 5210, Industrial valves — Multi-turn valve actuator attachments
ISO 5211, Industrial valves — Part-turn actuator attachments
IEC 60529, Degrees of protection provided by enclosures (IP Code)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
gearbox
self-contained gear unit for torque/thrust/speed/orientation change that can be manually operated and/or
automated with an actuator
3.2
ambient temperature
temperature of the environment surrounding the gearbox (3.1)
3.3
end of travel
predefined position related to a fully open or a fully closed condition
3.4
end stop
mechanical device designed to stop the gearbox (3.1) drive train movement

ISO 22109:2026(en)
3.5
endurance
lifetime without failure at specified conditions and proved during the type test
3.6
indicating arrangement
device, externally visible, showing the position of the valve obturator
3.7
rated torque
classification defined by the gearbox (3.1) manufacturer used to define the maximum gearbox operating
torque capability
3.8
rated thrust
maximum thrust for linear output actuators, available for valve operation, as stated by the manufacturer or
maximum thrust for multi-turn output actuators, the actuator can withstand as stated by the manufacturer
[SOURCE: ISO 22153:2020, 3.7]
4 Classification
4.1 General
Gearboxes are classified per kind of operation and rotation and/or linear movement as detailed in 4.2 and
4.3.
4.2 Kind of operation
There are three kinds of operation:
— manual: gearbox designed for manual operation only, typically this has only one input;
— automated: gearbox designed for automated operation, typically this has only one input, normally by an
actuator for example according to ISO 22153;
— manual override: gearbox designed for overriding automated operation, typically this has two inputs. The
primary input is normally an actuator. The secondary input is normally by a handwheel. The secondary
input is normally disengaged when the gearbox is being used in automated mode and is engaged when
manual operation is required, e.g. on loss of power.
4.3 Kind of rotation
There are two kinds of rotation:
— part-turn: gearbox whi
...