kSIST FprEN ISO 22109:2025

SLOVENSKI STANDARD
oSIST prEN ISO 22109:2025
01-september-2025
Industrijski ventili - Gonila za ventile (ISO/DIS 22109:2025)
Industrial valves - Gearbox for valves (ISO/DIS 22109:2025)
Industriearmaturen - Armaturengetriebe (ISO/DIS 22109:2025)
Robinetterie industrielle - Réducteur pour appareil de robinetterie (ISO/DIS 22109:2025)
Ta slovenski standard je istoveten z: prEN ISO 22109
ICS:
23.060.01 Ventili na splošno Valves in general
oSIST prEN ISO 22109:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN ISO 22109:2025
oSIST prEN ISO 22109:2025
DRAFT
International
Standard
ISO/DIS 22109
ISO/TC 153
Industrial valves — Gearbox for
Secretariat: AFNOR
valves
Voting begins on:
Robinetterie industrielle — Réducteur pour appareil de
2025-02-20
robinetterie
Voting terminates on:
ICS: 23.060.01 2025-05-15
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Reference number
ISO/DIS 22109:2025(en)
oSIST prEN ISO 22109:2025
DRAFT
ISO/DIS 22109:2025(en)
International
Standard
ISO/DIS 22109
ISO/TC 153
Industrial valves — Gearbox for valves
Secretariat: AFNOR
Robinetterie industrielle — Réducteur pour appareil de
Voting begins on:
robinetterie
ICS: 23.060.01
Voting terminates on:
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 22109:2025(en)
ii
oSIST prEN ISO 22109:2025
ISO/DIS 22109:2025(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 . 9
9.1 General .9
9.2 Mandatory documentation .9
9.3 Optional documentation .10
10 Packaging. 10
Annex A (normative) Endurance test procedure .11
Annex B (informative) Load profiles .12
Bibliography . 14

iii
oSIST prEN ISO 22109:2025
ISO/DIS 22109:2025(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 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 22109:2020), which has been technically
revised.
The main changes are as follows:
— the rated torques 32 001 to 250 000 were added in Table 2;
— the mechanical advantage for gearboxes other than worm gearboxes was added in 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.
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
oSIST prEN ISO 22109:2025
DRAFT International Standard ISO/DIS 22109:2025(en)
Industrial valves — Gearbox for valves
1 Scope
This document provides basic requirements for gearboxes to operate industrial valves for manual and
automated on/off and modulating duties, this includes manual override gearboxes. It includes guidelines for
classification, design and methods for conformity assessment.
It does not cover gear systems which are 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 terminological 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 by
handwheel/lever 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
3.5
endurance
lifetime without failure at specified conditions and tested by the type test

oSIST prEN ISO 22109:2025
ISO/DIS 22109:2025(en)
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 for 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, normally by a
handwheel;
— 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 which transmits torque to the valve for a rotation of less than one revolution;
— multi-turn: gearbox which transmits torque for a rotation of at least one revolution and may be capable
of withstanding thrust to the valve.
5 Design requirements
5.1 Endurance
The basic design requirements for automated gearboxes duty classification are given in Table 1.

oSIST prEN ISO 22109:2025
ISO/DIS 22109:2025(en)
Table 1 — Automated duty classification
Class Duty Definition
A On-off The gearbox is required to drive the valve through its entire travel from
the fully open position to the fully closed position or vice-versa.
B Inching/positioning The gearbox is required to occasionally drive the valve to any position
(fully open, intermediate and fully closed).
C Modulating The gearbox is required to frequently drive the valve to any position
between fully open and fully closed.
D Continuous modulating The gear
...