ISO 5210
(Main)Industrial valves — Multi-turn valve actuator attachments
Industrial valves — Multi-turn valve actuator attachments
ISO 5210:2017 specifies the requirements for the attachment of multi-turn actuators to valves. Throughout this document, "actuator" may be understood as "actuator and/or gearbox" providing a multi-turn and/or linear output. ISO 5210:2017 specifies: - flange dimensions necessary for the attachment of actuators to industrial valves [see Figure 1 a)] or to intermediate supports [see Figure 1 b)]; - those driving component dimensions of actuators which are necessary to attach them to the driven components; - reference values for torque and thrust for flanges having the dimensions specified in this document.
Robinetterie industrielle — Raccordement des actionneurs multitours aux appareils de robinetterie
ISO 5210:2017 prescrit les exigences de raccordement des actionneurs multitours aux appareils de robinetterie. Tout au long du présent document, le terme «actionneur» peut être compris comme «actionneur et/ou réducteur» fournissant une sortie multitours et/ou linéaire. ISO 5210:2017 prescrit: - les dimensions des brides nécessaires pour le raccordement des actionneurs aux appareils de robinetterie industrielle [voir Figure 1 a)] ou aux supports intermédiaires [voir Figure 1 b)]; - les dimensions des éléments d'entraînement des actionneurs nécessaires à leur accouplement aux éléments entraînés; - les valeurs de référence du couple et de la poussée pour les brides ayant les dimensions spécifiées dans le présent document.
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ISO/FDIS 5210:2023(E)
ISO/TC 153/WG 1
Secretariat: AFNOR
Date: 2023-04-0528
Industrial valves — Multi-turn valve actuator attachments
Robinetterie industrielle — Raccordement des actionneurs multitours aux appareils de robinetterie
FDIS stage
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ISO/FDIS 5210:2023(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
EmailE-mail: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii
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© ISO 2023 – All rights reserved
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ISO/FDIS 5210:2023(E)
Contents Page
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Maximum torques and thrusts . 2
5 Flange dimensions . 3
6 Designation . 5
7 Dimensions of driving and driven components . 6
7.1 General . 6
7.2 Dimensions for assemblies capable of transmitting both torque and thrust: Group A . 6
7.3 Dimensions for assemblies capable of transmitting torque only: Group B . 8
7.4 Dimensions for assemblies capable of transmitting torque only: Group C . 10
7.5 Dimensions for assemblies capable of transmitting torque only: Group D . 11
7.6 Dimensions for assemblies capable of transmitting thrust only: Group Linear actuators . 13
Annex A (informative) Explanation of calculations . 15
A.1 Basis of torque and thrust values for flange sizes . 15
A.2 Coefficient of friction of 0,2 . 15
A.3 Tension stress bolts . 16
A.4 Sizing — Consideration of thrust . 16
Annex B (normative) Dimensions of keys and keyways . 17
B.1 Basis for keys and keyways dimensioning . 17
B.2 Key and keyway forms . 17
B.3 Dimensions and tolerances (cross section and design details) . 19
Bibliography . 23
© ISO 2023 – All rights reserved iii
©ISO 2023 – All rights reserved
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ISO/FDIS 5210:2023(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/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
www.iso.org/patents. ISO shall not be held responsible for identifying any or all
database available at
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 62069, 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 5210:2017), which has been technically
revised.
The main changes are as follows:
— — dimensions and tolerances for keys and keyways were added in a new Annex BAnnex B;;
— — a reference to the new Annex BAnnex B was added in 7.37.3 and 7.57.5;
— 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
iv ©ISO 2023 – All rights reserved
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ISO/FDIS 5210:2023(E)
Introduction
The purpose of this document is to establish certain basic requirements for the attachment of multi-turn
actuators, in order to define the interface between actuator and valve.
This document hasis, in general, to be considered in conjunction with the specific requirements which
may be agreed between the parties concerned.
© ISO 2023 – All rights reserved v
©ISO 2023 – All rights reserved
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ISO/FDIS 5210:2023(E)
Industrial valves — Multi-turn valve actuator attachments
1 Scope
This document specifies the requirements for the attachment of multi-turn actuators to valves.
Throughout this document, “actuator” may be understood as “actuator and/or gearbox” providing a
multi-turn and/or linear output.
It specifies:
— — flange dimensions necessary for the attachment of actuators to industrial valves [see Figure 1 a)]
or to intermediate supports [see Figure 1 b)];
— — those driving component dimensions of actuators which are necessary to attach them to the
driven components;
— — reference values for torque and thrust for flanges having the dimensions specified in this
document.
NOTE 1 In this document, the term “valve” maycan also be understood to include “valve with an intermediate
support” [see Figure 1Figure 1 b)].
NOTE 2 When a combination of a multi-turn actuator and separate multi-turn/linear gearbox is coupled to form
an actuator, the multi-turn attachment to the gearbox is in accordance with this document [see Figures 1Figures 1 c)
and 11 d)]. A combination of a multi-turn actuator with integral multi-turn/linear gearbox supplied as an actuator
is in accordance with Figures 1Figures 1 a) and 11 b).
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ISO/FDIS 5210:2023(E)
a) Direct interface b) Intermediate c) Direct interface d) Intermediate
support interface (when combination of a support interface
multi-turn actuator and (when combination of a
multi-turn/linear multi-turn actuator and
a multi-turn/linear
gearbox)
gearbox)
Key
1 multi-turn/linear actuator 5 gearbox
2 interface (see ISO 5210) 6 interface (see ISO 5210)
3 valve 7 multi-turn actuator
4 intermediate support
Figure 1 — Interface between multi-turn/linear actuator and valve
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ISO/FDIS 5210:2023(E)
Industrial valves — Multi-turn valve actuator attachments
1 Scope
This document specifies the requirements for the attachment of multi-turn actuators to valves.
Throughout this document, “actuator” can be understood as “actuator and/or gearbox” providing a multi-
turn and/or linear output.
It specifies:
— flange dimensions necessary for the attachment of actuators to industrial valves [see Figure 1 a)] or
to intermediate supports [see Figure 1 b)];
— those driving component dimensions of actuators which are necessary to attach them to the driven
components;
— reference values for torque and thrust for flanges having the dimensions specified in this document.
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 273, Fasteners — Clearance holes for bolts and screws
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminologicalterminology databases for use in standardization at the following
addresses:
— — IEC Electropedia: available at
— — ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
actuator
any device designed for attachment to a general-purpose industrial valve in order to provide for the
operation of the valve
Note 1 to entry: The device is designed to operate using motive energy which may be electrical, pneumatic,
hydraulic, manual, etc., or a combination of these. Movement is limited by travel, torque (3.4) and/or thrust (3.5.).
3.2
multi-turn actuator
actuator (3.1) which transmits torque (3.4) to the valve for at least one revolution and may be capable of
withstanding thrust (3.5)
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ISO/FDIS 5210:2023(E)
Note 1 to entry: An actuator may be a combination of a multi-turn actuator and multi-turn gearbox.
3.3
linear actuator
actuator (3.1) which transmits thrust (3.5) to the valve for a defined linear stroke
Note 1 to entry: An actuator may be a combination of a multi-turn actuator (3.2) and linear gearbox.
3.4
torque
turning moment transmitted through the mounting flanges and couplings
Note 1 to entry: Torque is expressed in newton-metres.
3.5
thrust
axial force transmitted through the mounting flanges and couplings
Note 1 to entry: Thrust is expressed in kilonewtons.
4 Maximum torques and thrusts
The torque and thrust shall comply with the values listed in Table 1Table 1 which represent the
maximum torques and thrusts which can be transmitted simultaneously through the mounting flanges
and couplings. They are based upon specified criteria.
Table 1 — Maximum torque and thrust values
Torque Thrust
Flange type
[Nm] [kN]
F05 20 10
F07 40 20
F10 100 40
F12 250 70
F14 400 100
F16 700 150
F25 1 200 200
F30 2 500 325
F35 5 000 700
F40 10 000 1 100
F48 20 000 2 000
F60 40 000 4 000
The values specified in Table 1Table 1 have been defined on the basis of bolts in tension at a stress of
290 MPa and a coefficient of friction of 0,2 between the mounting interface. All variations in these defined
2
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ISO/FDIS 5210:2023(E)
parameters lead to variations of the transmittable torque and/or thrust values. See Annex AAnnex A for
an explanation on the calculation method.
The selection of flange size for a particular application should take account of additional torques and/or
thrust that may be generated at the valve stem because of sizing, safety factors, inertia or other similar
factors. Specifically, the torque and thrust generated at the maximum output torque and/or thrust of the
selected actuator shall be calculated and considered in the selection of the flange along with the ability of
the valve and actuator to withstand such torque and thrust forces.
5 Flange dimensions
Flanges for actuator attachment shall comply with the dimensions shown in Figure 2Figure 2 and given
in Table 2Table 2. The method of attachment shall be by means of studs or through bolting. When
through bolting is used, the diameter of the clearance holes shall permit the use of bolts of a size given by
the corresponding dimension d in Table 2Table 2.
4
Holes for the studs/bolts shall be positioned off-centre (see Figure 3Figure 3 and Table 3Table 3),), shall
be equi-spaced and shall conform to the requirements of ISO 273.
The interface on the valve shall have a recess corresponding to the diameter d . A spigot on the actuator
2
is optional.
The minimum values for dimension h shown in Table 2Table 2 apply to flanges having material of proof
2
stress R ≥ 200 MPa. The minimum values for dimension h applied to flanges having materials of proof
e 2
stress R ≤ 200 MPa shall be agreed between manufacturer and purchaser. The minimum values for
e
dimension h shall be at least 1 × d .
3 4
Dimension d has been based on providing sufficient landing for the nuts and bolt heads where
1
applicable. Such landing is defined as a radius from the bolt hole centre with the dimension (d − d ) / 2,
1 3
and is a minimum. The flange shape of both valve and actuator outside these areas of landing is left to the
option of the manufacturer.
The dimensions and bolting material are based on bolts in tension at a maximum stress of 290 MPa. On
agreement, between the manufacturer/supplier and purchaser, bolting material with different tensile
strength can be used, with no dimensional changes but with potential variation of the transmittable
torque and thrust value.
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ISO/FDIS 5210:2023(E)
Figure 2 — Flange dimensions
Table 2 — Flange dimensions
Dimensions in millimetres
Dimensions
Number of studs
Flange
or bolts
d h h h
1 1 2 3
type
a
d d d
2 3 4
n
min. max. min. min.
F05 ∅65 ∅35 ∅50 M6 3 9 6 4
F07 ∅90 ∅55 ∅70 M8 3 12 8 4
F10 ∅125 ∅70 ∅102 M10 3 15 10 4
F12 ∅150 ∅85 ∅125 M12 3 18 12 4
F14 ∅175 ∅100 ∅140 M16 4 24 16 4
F16 ∅210 ∅130 ∅165 M20 5 30 20 4
F25 ∅300 ∅200 ∅254 M16 5 24 16 8
F30 ∅350 ∅230 ∅298 M20 5 30 20 8
F35 ∅415 ∅260 ∅356 M30 5 45 30 8
F40 ∅475 ∅300 ∅406 M36 8 54 36 8
F48 ∅560 ∅370 ∅483 M36 8 54 36 12
F60 ∅686 ∅470 ∅603 M36 8 54 36 20
a
d2 shall be manufactured within the diameter tolerance f8.
4
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ISO/FDIS 5210:2023(E)
Figure 3 — Positions of the holes for the studs/bolts
Table 3 — Positions of holes
Flange type α/2
F05 to F16 45°
F25 to F40 22,5°
F48 15°
F60 9°
6 Designation
Flanges are designated by flange type according to Table 1Table 1.
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ISO/FDIS 5210:2023(E)
7 Dimensions of driving and driven components
7.1 General
The dimensions of the driving and driven components shall comply with the dimensions given in
Tables 4Tables 4 to 88.
The depth of engagement of the valve-driven component into the actuator drive component and the
surface area of contact between the faces of the actuator drive component and the faces of the valve-
driven component, should be considered to ensure that the stresses caused by contact do not exceed the
capability of the component materials. In some cases it may be necessary to use materials with superior
mechanical properties and/or to reduce the output torque of the actuator.
7.2 Dimensions for assemblies capable of transmitting both torque and thrust: Group A
Dimensions for assemblies of group A shall be as shown in Figures 4Figures 4 and 55,, and given in
Table 4Table 4.
Figure 4 — Driving component, group A
6
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ISO/FDIS 5210:2023(E)
a) Example for rising stem b) Example for rising stem with c) Example for non-rising stem
limit stop
Figure 5 — Examples for rising and non-rising stem — Driven component, group A
For rising stem dimension d permits clearance for the rising and non-rotating stem an
...
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 5210
ISO/TC 153
Industrial valves — Multi-turn valve
Secretariat: AFNOR
actuator attachments
Voting begins on:
2023-05-16
Robinetterie industrielle — Raccordement des actionneurs multitours
aux appareils de robinetterie
Voting terminates on:
2023-08-08
ISO/CEN PARALLEL PROCESSING
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 SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 5210:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023
---------------------- Page: 1 ----------------------
ISO/FDIS 5210:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 5210
ISO/TC 153
Industrial valves — Multi-turn valve
Secretariat: AFNOR
actuator attachments
Voting begins on:
Robinetterie industrielle — Raccordement des actionneurs multitours
aux appareils de robinetterie
Voting terminates on:
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
ISO/CEN PARALLEL PROCESSING
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.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: +41 22 749 01 11
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: copyright@iso.org
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO
ISO/FDIS 5210:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
© ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023
---------------------- Page: 2 ----------------------
ISO/FDIS 5210:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Maximum torques and thrusts .2
5 Flange dimensions . 2
6 Designation . 4
7 Dimensions of driving and driven components . 4
7.1 General . 4
7.2 Dimensions for assemblies capable of transmitting both torque and thrust: Group A . 5
7.3 Dimensions for assemblies capable of transmitting torque only: Group B . 6
7.4 Dimensions for assemblies capable of transmitting torque only: Group C. 7
7.5 Dimensions for assemblies capable of transmitting torque only: Group D . 8
7.6 Dimensions for assemblies capable of transmitting thrust only: Group Linear
actuators . 9
Annex A (informative) Explanation of calculations .11
Annex B (normative) Dimensions of keys and keyways .13
Bibliography .19
iii
© ISO 2023 – All rights reserved
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ISO/FDIS 5210:2023(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 nongovernmental, 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 5210:2017), 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 7.3 and 7.5;
— 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
© ISO 2023 – All rights reserved
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ISO/FDIS 5210:2023(E)
Introduction
The purpose of this document is to establish certain basic requirements for the attachment of multi-
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 multi-turn/linear gearbox is coupled to
form an actuator, the multi-turn attachment to the gearbox is in accordance with this document [see Figures 1 c)
and 1 d)]. A combination of a multi-turn actuator with integral multi-turn/linear gearbox supplied as an actuator
is in accordance with Figures 1 a) and 1 b).
a) Direct interface b) Intermediate sup- c) Direct interface d) Intermediate sup-
port interface (when combination of port interface (when
a multi-turn actuator combination of a mul-
and multi-turn/linear ti-turn actuator and
gearbox) a multi-turn/linear
gearbox)
Key
1 multiturn/linear actuator 5 gearbox
2 interface (see ISO 5210) 6 interface (see ISO 5210)
3 valve 7 multiturn actuator
4 intermediate support
Figure 1 — Interface between multi-turn/linear actuator and valve
v
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FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 5210:2023(E)
Industrial valves — Multi-turn valve actuator attachments
1 Scope
This document specifies the requirements for the attachment of multi-turn actuators to valves.
Throughout this document, “actuator” can be understood as “actuator and/or gearbox” providing a
multiturn and/or linear output.
It specifies:
— flange dimensions necessary for the attachment of actuators to industrial valves [see Figure 1 a)] or
to intermediate supports [see Figure 1 b)];
— those driving component dimensions of actuators which are necessary to attach them to the driven
components;
— reference values for torque and thrust for flanges having the dimensions specified in this document.
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 273, Fasteners — Clearance holes for bolts and screws
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
actuator
any device designed for attachment to a general-purpose industrial valve in order to provide for the
operation of the valve
Note 1 to entry: The device is designed to operate using motive energy which may be electrical, pneumatic,
hydraulic, manual, etc., or a combination of these. Movement is limited by travel, torque (3.4) and/or thrust (3.5).
3.2
multi-turn actuator
actuator (3.1) which transmits torque (3.4) to the valve for at least one revolution and may be capable of
withstanding thrust (3.5)
Note 1 to entry: An actuator may be a combination of a multi-turn actuator and multi-turn gearbox.
1
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ISO/FDIS 5210:2023(E)
3.3
linear actuator
actuator (3.1) which transmits thrust (3.5) to the valve for a defined linear stroke
Note 1 to entry: An actuator may be a combination of a multi-turn actuator (3.2) and linear gearbox.
3.4
torque
turning moment transmitted through the mounting flanges and couplings
Note 1 to entry: Torque is expressed in newton-metres.
3.5
thrust
axial force transmitted through the mounting flanges and couplings
Note 1 to entry: Thrust is expressed in kilonewtons.
4 Maximum torques and thrusts
The torque and thrust shall comply with the values listed in Table 1 which represent the maximum
torques and thrusts which can be transmitted simultaneously through the mounting flanges and
couplings. They are based upon specified criteria.
Table 1 — Maximum torque and thrust values
Torque Thrust
Flange type
[Nm] [kN]
F05 20 10
F07 40 20
F10 100 40
F12 250 70
F14 400 100
F16 700 150
F25 1 200 200
F30 2 500 325
F35 5 000 700
F40 10 000 1 100
F48 20 000 2 000
F60 40 000 4 000
The values specified in Table 1 have been defined on the basis of bolts in tension at a stress of 290 MPa
and a coefficient of friction of 0,2 between the mounting interface. All variations in these defined
parameters lead to variations of the transmittable torque and/or thrust values. See Annex A for an
explanation on the calculation method.
The selection of flange size for a particular application should take account of additional torques and/or
thrust that may be generated at the valve stem because of sizing, safety factors, inertia or other similar
factors. Specifically, the torque and thrust generated at the maximum output torque and/or thrust of
the selected actuator shall be calculated and considered in the selection of the flange along with the
ability of the valve and actuator to withstand such torque and thrust forces.
5 Flange dimensions
Flanges for actuator attachment shall comply with the dimensions shown in Figure 2 and given
in Table 2. The method of attachment shall be by means of studs or through bolting. When through
2
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ISO/FDIS 5210:2023(E)
bolting is used, the diameter of the clearance holes shall permit the use of bolts of a size given by the
corresponding dimension d in Table 2.
4
Holes for the studs/bolts shall be positioned offcentre (see Figure 3 and Table 3), shall be equi-spaced
and shall conform to the requirements of ISO 273.
The interface on the valve shall have a recess corresponding to the diameter d . A spigot on the actuator
2
is optional.
The minimum values for dimension h shown in Table 2 apply to flanges having material of proof stress
2
R ≥ 200 MPa. The minimum values for dimension h applied to flanges having materials of proof stress
e 2
R ≤ 200 MPa shall be agreed between manufacturer and purchaser. The minimum values for dimension
e
h shall be at least 1 × d .
3 4
Dimension d has been based on providing sufficient landing for the nuts and bolt heads where
1
applicable. Such landing is defined as a radius from the bolt hole centre with the dimension (d − d ) / 2,
1 3
and is a minimum. The flange shape of both valve and actuator outside these areas of landing is left to
the option of the manufacturer.
The dimensions and bolting material are based on bolts in tension at a maximum stress of 290 MPa. On
agreement, between the manufacturer/supplier and purchaser, bolting material with different tensile
strength can be used, with no dimensional changes but with potential variation of the transmittable
torque and thrust value.
Figure 2 — Flange dimensions
Table 2 — Flange dimensions
Dimensions in millimetres
Dimensions Number of
Flange
studs or bolts
d h h h
1 a 1 2 3
type
d d d
2 3 4
min. max. min. min.
n
F05 ∅65 ∅35 ∅50 M6 3 9 6 4
F07 ∅90 ∅55 ∅70 M8 3 12 8 4
F10 ∅125 ∅70 ∅102 M10 3 15 10 4
F12 ∅150 ∅85 ∅125 M12 3 18 12 4
F14 ∅175 ∅100 ∅140 M16 4 24 16 4
F16 ∅210 ∅130 ∅165 M20 5 30 20 4
F25 ∅300 ∅200 ∅254 M16 5 24 16 8
a
d shall be manufactured within the diameter tolerance f8.
2
3
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ISO/FDIS 5210:2023(E)
TTabablele 2 2 ((ccoonnttiinnueuedd))
Dimensions Number of
Flange
studs or bolts
d h h h
type 1 a 1 2 3
d d d
2 3 4
min. max. min. min.
n
F30 ∅350 ∅230 ∅298 M20 5 30 20 8
F35 ∅415 ∅260 ∅356 M30 5 45 30 8
F40 ∅475 ∅300 ∅406 M36 8 54 36 8
F48 ∅560 ∅370 ∅483 M36 8 54 36 12
F60 ∅686 ∅470 ∅603 M36 8 54 36 20
a
d shall be manufactured within the diameter tolerance f8.
2
Figure 3 — Positions of the holes for the studs/bolts
Table 3 — Positions of holes
Flange type α/2
F05 to F16 45°
F25 to F40 22,5°
F48 15°
F60 9°
6 Designation
Flanges are designated by flange type according to Table 1.
7 Dimensions of driving and driven components
7.1 General
The dimensions of the driving and driven components shall comply with the dimensions given in
Tables 4 to 8.
The depth of engagement of the valvedriven component into the actuator drive component and the
surface area of contact between the faces of the actuator drive component and the faces of the valve
4
© ISO 2023 – All rights reserved
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ISO/FDIS 5210:2023(E)
driven component, should be considered to ensure that the stresses caused by contact do not exceed
the capability of the component materials. In some cases it may be necessary to use materials with
superior mechanical properties and/or to reduce the output torque of the actuator.
7.2 Dimensions for assemblies capable of transmitting both torque and thrust: Group A
Dimensions for assemblies of group A shall be as shown in Figures 4 and 5, and given in Table 4.
Figure 4 — Driving component, group A
a) Example for rising stem b) Example for rising stem with c) Example for non-rising stem
limit stop
Figure 5 — Examples for rising and non-rising stem — Driven component, group A
For rising stem dimension d permits clearance for the rising and non-rotating stem and for any device
5
to restrict the downward travel of the valve stem.
5
© ISO 2023 – All rights reserved
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ISO/FDIS 5210:2023(E)
For nonrising stem dimension d permits the clearance of the stemlocking and thrusttaking
5
components of the nonrising and rotating stem.
Table 4 — Dimensions for group A drive components
Dimensions in millimetres
a a
Flange type d min. d max. l min. h max.
6 6 1 3
F05 ∅18 ∅22 20 40
F07 ∅20 ∅26 25 60
F10 ∅28 ∅40 40 80
F12 ∅32 ∅48 48 95
F14 ∅36 ∅55 55 110
F16 ∅44 ∅75 70 135
F25 ∅60 ∅85 90 150
F30 ∅80 ∅100 110 175
F35 ∅100 ∅150 150 250
F40 ∅120 ∅175 180 325
F48 ∅120 ∅175 180 350
F60 ∅120 ∅180 180 400
a
The driving component is capable of accepting a diameter up to and
including the values d min. shown in Figure 4. Without being a requirement,
6
the driving component may accept larger diameters up to the values of d
6
max.
7.3 Dimensions for assemblies capable of transmitting torque only: Group B
Dimensions for assemblies of group B shall be as shown in Figures 6 and 7, and given in Table 5.
Dimensions of keys and keyways shall conform with those given in Annex B.
Group B is divided into four subgroups, where the diameter d of the output drive is defined as follows:
— Type B1: d = d H9;
7
— Type B2: d ≤ d ;
7
— Type B3: d = d H9;
10
— Type B4: d ≤ d max.
10
Key
1 flange
Figure 6 — Driving components, group B
6
© ISO 2023 – All rights reserved
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ISO/FDIS 5210:2023(E)
Key
1 interface
Figure 7 — Driven components, group B
In order to ensure that no interference can occur between the driving component and the driven
component, it is necessary to limit the length of the driven component l above the interface so that
3
there is an appropriate clearance between both parts.
Table 5 — Dimensions for group B drive components
Dimensions in millimetres
b a, b
Flange type d min d d d max. h max. l min.
5 7 10 10 4 2
F05 ∅18 ∅22 — — 3 30
F07 ∅22 ∅28 ∅16 ∅25 3 35
F10 ∅30 ∅42 ∅20 ∅35 3 45
F12 ∅35 ∅50 ∅25 ∅40 3 55
F14 ∅40 ∅60 ∅30 ∅45 4 65
F16 ∅50 ∅80 ∅40 ∅60 5 80
F25 ∅65 ∅100 ∅50 ∅75 5 110
F30 ∅85 ∅120 ∅60 ∅90 5 130
F35 ∅110 ∅160 ∅80 ∅120 5 180
F40 ∅130 ∅180 ∅100 ∅160 8 200
F48 ∅160 ∅220 — — 8 250
F60 ∅180 ∅
...
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