ISO/FDIS 14617-1
(Main)Graphical symbols for diagrams — Part 1: General rules
Graphical symbols for diagrams — Part 1: General rules
ISO 14617-1:2005 serves as an introduction to all the other parts of ISO 14617. In particular, it gives information on the creation and use of registration numbers for identifying graphical symbols used in diagrams, rules for the presentation and application of these symbols, and examples of their use and application. It includes three indexes: an alphabetic index and an index of registration numbers -- both concerned uniquely with ISO 14617-2 to ISO 14617-12 -- and an index of cross-references to related items found in other International Standards.
Symboles graphiques pour schémas — Partie 1: Informations générales et index
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International
Standard
ISO/TC 10/SC 10
Graphical symbols for diagrams —
Secretariat: DIN
Part 1:
Voting begins on:
2024-12-20
General rules
Voting terminates on:
Symboles graphiques pour schémas —
2025-02-14
Partie 1: Informations générales et index
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Reference number
FINAL DRAFT
International
Standard
ISO/TC 10/SC 10
Graphical symbols for diagrams —
Secretariat: DIN
Part 1:
Voting begins on:
General rules
Voting terminates on:
Symboles graphiques pour schémas —
Partie 1: Informations générales et index
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.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
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CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Graphical symbols . 2
4.1 General .2
4.2 Graphical symbols of same shape but different meaning .2
4.3 Dimensions and lines .3
4.4 Modification of proportions .3
4.5 Orientation of graphical symbols .3
4.6 Different forms of graphical symbols .3
4.7 Creation of new symbol examples . .3
4.8 Letter codes, abbreviations, etc. .4
4.8.1 Overview .4
4.8.2 Chemical formulae .4
4.8.3 Unit designations .4
5 Representation of graphical symbols . 4
5.1 Structuring of representation .4
5.2 Representation of graphical symbols in ISO 14617-2 .5
Annex A (informative) Registration numbers for graphical symbols . 6
Annex B (informative) Creation of new symbols . 7
Annex C (informative) Letter codes for process variables, control functions and modifying
purposes . 8
Bibliography .10
iii
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 10, Technical product documentation,
Subcommittee SC 10, Process plant documentation.
This third edition cancels and replaces the second edition (ISO 14617-1:2005), which has been technically
revised.
The main changes are as follows:
— Clause 3 terms and definitions were changed;
— ”GSD” was added in front of registration numbers defined in a previous version of ISO 14617 series;
— symbols using letter codes, which were defined in ISO 14617-6, are not included in the revised ISO 14617
series because the definition of letter codes moved to ISO 15519-2. See Annex C;
— structuring of presentation of graphical symbols has been changed in order to improve user’s access to
navigate and find symbols;
— annexes have reconstructed.
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
Introduction
0.1 General
ISO/TC 10 prepares standards for diagrams including graphical symbols, which together with International
Standards prepared by other ISO committees and IEC constitute the basis for the preparation of diagrams.
The interrelations between these International Standards are illustrated in Figure 1. Standards in bold are
ISO/TC 10 standards.
Figure 1 — Interrelations between ISO and IEC standards for diagrams
0.2 Collective application standards
Technical committees, requiring a field specific standard, can, in co-operation with ISO/TC 10, to develop
their own collective application standard for the preparation of diagrams and graphical symbols as per
the requirements given in ISO 15519-1 or ISO 14617, or both. Collective application standards are not to be
contradictory with respect to the source standard(s).
a
Collective application standards are marked in Figure 1.
v
FINAL DRAFT International Standard ISO/FDIS 14617-1:2024(en)
Graphical symbols for diagrams —
Part 1:
General rules
1 Scope
This document specifies general rules for and gives guidance on the preparation and presentation of graphical
symbols for diagrams, which are related to physical industrial components, products and processing.
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 81714-1, Design of graphical symbols for use in the technical documentation of products — Part 1: Basic rules
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
graphical symbol
visually perceptible figure with a particular meaning used to transmit information independently of
language
Note 1 to entry: The graphical symbol can represent objects of interest, such as products, functions or requirements
for manufacturing, quality control, etc.
Note 2 to entry: A graphical symbol is not to be confused with the simplified representation of products which are
normally drawn to scale and which can look like a graphical symbol.
Note 3 to entry: The graphical symbol means the same as the technical product documentation symbol (TPD-symbol).
[SOURCE: ISO 81714-1:2010, 3.1, modified — Note 3 to entry added.]
3.2
basic symbol
symbol which can be used direct in diagrams or combined with supplementary symbols (3.3) to form symbol
examples (3.5)
3.3
supplementary symbol
symbol which can be combined with a basic symbol (3.2) to form a symbol example (3.5)
3.4
application rule
information on how to design composite symbols and how to apply the graphical symbols (3.1) in a diagram
Note 1 to entry: The symbol examples (3.5) are regarded as guidelines.
Note 2 to entry: Application rules for symbols are specified in Annex A of ISO 14617-2:2025.
3.5
symbol example
example of how to combine basis symbols (3.2) and supplementary symbols (3.3) using the application rules (3.4)
Note 1 to entry: Each symbol example is accompanied by information on which basic and supplementary symbols (3.2)
(3.3) have been used to compose itself.
Note 2 to entry: The symbol examples are regarded as guidelines.
3.6
registration number
unique number assigned each graphical symbol (3.1)
Note 1 to entry: In principle, this number is arbitrarily chosen. No information can be derived from it.
Note 2 to entry: The registration number remains unchanged throughout the lifetime of the corresponding graphical
symbol, including in future revisions of this docu
...
ISO/FDIS 14617--1:2024(E)
ISO/TC 10/SC 10/WG 13
Secretariat: JISC DIN
Date: 2024-08-3012-04
Graphical symbols for diagrams — —
Part 1:
General rules
Symboles graphiques pour schémas —
Partie 1: Informations générales et index
FDIS stage
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 copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Email: copyright@iso.org
E-mail: copyright@iso.org
Website: www.iso.orgwww.iso.org
Published in Switzerland.
ii © ISO 2024 – All rights reserved
ii
Contents
Foreword . v
Introduction . vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Graphical symbols . 3
5 Representation of graphical symbols . 5
Annex A (informative) Registration numbers for graphical symbols . 7
Annex B (informative) Creation of new symbols . 8
Annex C (informative) Letter codes for process variables, control functions and modifying
purposes . 10
Bibliography . 12
Foreword . v
Introduction . vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Graphical symbols . 3
4.1 General. 3
4.2 Graphical symbols of same shape but different meaning . 3
4.3 Dimensions and lines . 3
4.4 Modification of proportions . 4
4.5 Orientation of graphical symbols . 4
4.6 Different forms of graphical symbols . 4
4.7 Creation of new symbol examples . 4
4.8 Letter codes, abbreviations, etc. . 4
4.8.1 Overview . 4
4.8.2 Chemical formulae. 5
4.8.3 Unit designations . 5
5 Representation of graphical symbols . 5
5.1 Structuring of representation . 5
5.2 Representation of graphical symbols in ISO 14617-2 . 6
Annex A (informative) Registration numbers for graphical symbols . 7
Annex B (informative) Creation of new symbols . 8
Annex C (informative) Letter codes for process variables, control functions and modifying
purposes . 9
Bibliography . 29
iii
iv © ISO 2024 – All rights reserved
iv
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.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’sISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.htmlwww.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 10, Technical product documentation,
Subcommittee SC 10, Process plant documentation.
This third edition cancels and replaces the second edition (ISO 14617-1:2005), which has been technically
revised.
The main changes are as follows:
— — Term: “Application examples” renamed to “Symbol examples”;
— Clause 3 terms and definitions were changed;
— ”GSD” was added in front of registration numbers defined in a previous version of ISO 14617 series;
— — Clause 3 terms and definition was changed;
— — The symbols using letter codes, which were defined in the previous ISO 14617 Part -6, are not
included in this newthe revised ISO 14617 series because the definition of letter codes moved to ISO
15519-2:2015. See Annex C;Annex C;
— — The structuring of presentation of graphical symbols has been changed in order to improve
user’s access to navigate and find symbols;
v
— — Annexesannexes have reconstructed.
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.
vi © ISO 2024 – All rights reserved
vi
Introduction
0.1 0.1General
ISO/TC 10/SC 10 prepares standards for diagrams including graphical symbols, which together with
standardsInternational Standards prepared by other ISO committees and IEC constitute the basis for the
preparation of diagrams.
The interrelations between these standards International Standards are illustrated in Figure 1.Figure 1.
Standards in bold are ISO/TC 10/SC 10 standards.
NOTE Standards in bold are ISO/TC10/SC10 standards. Standards marked * are collective application standards (See
explanation in below Clause 0.2 Collective application standards)
The linked image cannot be displayed. The file may have been moved, renamed, or deleted. Verify that the link points to the correct file and location.
Figure 1 — Interrelations between ISO and IEC standards for diagrams
vii
0.2 0.2Collective application standards
Technical committees, requiring a field specific standard, are allowedcan, in co-operation with ISO/TC 10, to
develop their own collective application standard for the preparation of diagrams and graphical symbols in
accordance withas per the rulesrequirements given in ISO 15519-1 and/or ISO 14617, or both. Collective
application standards shouldare not to be contradictory with respect to the source standard(s).
a
Collective application standards are marked * in Figure 1.Figure 1.
—
viii © ISO 2024 – All rights reserved
viii
DRAFT INTERNATIONAL STANDARD ISO/DIS 14617-1:2023(E)
Graphical symbols for diagrams — —
Part 1:
General rules
1 Scope
This document specifies general rules for and gives guidance on the preparation and presentation of graphical
symbols for diagrams, which are related to physical industrial components, products and processing.
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 81714-1, Design of graphical symbols for use in the technical documentation of products — Part 1: Basic
rules
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/obphttps://www.iso.org/obp
— — IEC Electropedia: available at https://www.electropedia.org/https://www.electropedia.org/
3.1 3.1
graphical symbol
visually perceptible figure with a particular meaning used to transmit information independently of language
Note 1 to entry: The graphical symbol can represent objects of interest, such as products, functions or requirements for
manufacturing, quality control, etc.
Note 2 to entry: A graphical symbol is not to be confused with the simplified representation of products which are
normally drawn to scale and which can look like a graphical symbol.
Note 3 to entry: The graphical symbol means the same as the technical product documentation symbol (TPD-symbol).
[SOURCE: ISO 81714-1:2010, 3.1, modified — Note 3 to entry added.]
3.2 3.2
basic symbol
symbol which can be used direct in diagrams or combined with supplementary symbols (3.3)(3.3) to form
symbol examples (3.5)(3.5)
ISO/DISFDIS 14617-1:2023(E2024(en)
3.3 3.3
supplementary symbol
symbol which can be combined with a basic symbol (3.2)(3.2) to form a symbol example (3.5)(3.5)
3.4 3.4
application rule
information on how to design composite symbols and how to apply the gra
...
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