ISO/AWI TR 7470

Gas cylinders — List of provisions

Bouteilles à gaz — Inventaire des dispositions

General Information

• Status: Published
• ICS: 23.020.30 - Pressure vessels, gas cylinders
• ICS: 23.020.35 - Gas cylinders
• Technical Committee: ISO/TC 58/SC 2 - Cylinder fittings
• Drafting Committee: ISO/TC 58/SC 2/WG 11 - Allocations of valve outlets
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 18-Jan-2023
• Completion Date: 18-Jan-2023

Relations

• Revises: ISO/TR 7470:1988 - Valve outlets for gas cylinders — List of provisions which are either standardized or in use
• Effective Date: 04-Nov-2015

Standards Content (Sample)

FINAL
TECHNICAL ISO/DTR
DRAFT
REPORT 7470
ISO/TC 58/SC 2
Gas cylinders — List of provisions
Secretariat: AFNOR
Voting begins on:
2023-01-18
Voting terminates on:
2023-03-15
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/DTR 7470:2023(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/DTR 7470:2023(E)
FINAL
TECHNICAL ISO/DTR
DRAFT
REPORT 7470
ISO/TC 58/SC 2
Gas cylinders — List of provisions
Secretariat: AFNOR
Voting begins on:
Voting terminates on:
COPYRIGHT PROTECTED DOCUMENT
© 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.
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: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/DTR 7470:2022(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
© ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2022
---------------------- Page: 2 ----------------------
ISO/DTR 7470:2022(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ..................................................................................................................................................................................... 1

3 Terms and definitions .................................................................................................................................................................................... 1

4 Valve outlets by countries and by threads ............................................................................................................................... 1

iii
© ISO 2022 – All rights reserved
---------------------- Page: 3 ----------------------
ISO/DTR 7470:2022(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).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of

any patent rights identified during the development of the document will be in the Introduction and/or

on the ISO list of patent declarations received (see www.iso.org/patents).

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 58, Gas cylinders, Subcommittee SC 2,

Cylinder fittings.

This third edition cancels and replaces the second edition (ISO/TR 7470:1988), which has been

technically revised.
The main changes are as follows:
— the tables have been provided in a spreadsheet available at:
https://standards.iso.org/iso/tr/7470/ed­1/en

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
© ISO 2022 – All rights reserved
---------------------- Page: 4 ----------------------
TECHNICAL REPORT ISO/DTR 7470:2022(E)
Gas cylinders — List of provisions
1 Scope
This document lists gas cylinders valve outlets in use.
This document provides details of thread types and sizes.

NOTE Complete descriptions of particular valve outlets are given in national standards.

2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document.

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/
4 Valve outlets by countries and by threads

Table 1 lists the gas and the corresponding tabs in the spreadsheet available at: https:// standards .iso

.org/ iso/ tr/ 7470/ ed ­1/ en, where the nominal dimensions, designations and references of valve outlets

found in national standards are presented by country and by thread type. All of the pressures are given

in bar. In case of doubt, refer to the applicable valve outlet standard.

NOTE The pressure ratings are taken from the standards. The pressure rating for compressed gas normally

corresponds to the working pressure of the gas cylinder and for liquefied gases to the test pressure of the gas

cylinder.
Table 1 — List of gas with the corresponding tabs
Gas UN number Valve outlets Valve outlets
by countries by threads
1,1 ­ DIFLUOROETHANE 1030 Table 1 Table 2
1,1,1,2­TETRAFLUOROETHANE (R134a) 3159 Table 3 Table 4
1,1,1­TRICHLOROTRIFLUOROETHANE Table 5 Table 6
1,1,2­TRICHLOROTRIFLUOROETHANE (R113) Table 7 Table 8
1, 1­DICHLOROTETRAFLUOROETHANE (R114a) Table 9 Table 10
1,1­DIFLUOROETHYLENE 1959 Table 11 Table 12
1, 2­DIBROMOTETRAFLUOROETHANE (R114B2) Table 13 Table 14
1,2­DICHLORODIFLUOROETHYLENE Table 15 Table 16
1,2­DICHLOROETHYLENE (R1130) 1150 Table 17 Table 18
1, 2­DICHLOROHEXAFLUOROCYCLOBUTANE (RC316) Table 19 Table 20
1,3­BUTADIENE­1,3 1010 Table 21 Table 22
1.1.1TRIFLUOROETHANE OR R143A 2035 Table 23 Table 24
© ISO 2022 – All rights reserved
---------------------- Page: 5 ----------------------
ISO/DTR 7470:2022(E)
TTabablele 1 1 ((ccoonnttiinnueuedd))
Gas UN number Valve outlets Valve outlets
by countries by threads
1­CHLORO 1,1­DIFLUORETHANE 2517 Table 25 Table 26
1­CHLORO­1, 2, 2, 2­TETRAFLUOROETHANE (R124) Table 27 Table 28
1­CHLORO­2, 2, 2­TRIFLUOROETHANE (R133a) Table 29 Table 30
2,3,3,3,-TETRAFLUORO-1-PROPENE (R1234yf) Table 31 Table 32
2­METHYLPROPENE 1055 Table 33 Table 34
3­METHYL 1­BUTENE 2561
...

© ISO 2022 – All rights reserved
ISO/DTR 7470:2022(E)
ISO/TC 58/SC 2/WG 11
Secretariat: AFNOR
Valve outlets for gasDate: 2022-12-23
Gas cylinders – — List of provisions
Sorties de robinets des bouteilles à gaz – Inventaire des dispositions
WDFDIS stage
Warning for WDs and CDs

This document is not an ISO International Standard. It is distributed for review and comment. It is subject to

change without notice and may not be referred to as an International Standard.

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.
© ISO 2022 – All rights reserved
---------------------- Page: 1 ----------------------
ISO/DTR 7470:2022(E)
© ISO 2022, Published in Switzerland

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 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. Phone: + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
www.iso.org
ii © ISO 2022 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/DTR 7470:2022(E)
Contents

Foreword ............................................................................................................................................................................................ iv

1 Scope ....................................................................................................................................................................................... 1

2 Normative references ....................................................................................................................................................... 1

3 Terms and definitions ...................................................................................................................................................... 1

4 Valve outlets by countries and by threads .............................................................................................................. 1

© ISO 2022 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/DTR 7470:2022(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).

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any

patent rights identified during the development of the document will be in the Introduction and/or on

the ISO list of patent declarations received (see www.iso.org/patents).

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation onof 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.htmlthe following URL: .

This document was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 2,

Cylinder fittings.

This third edition cancels and replaces the second edition (ISO/TR 7470:1988), which has been

technically revised.
The main changes are as follows:
— the tables have been provided in a spreadsheet available at:
https://standards.iso.org/iso/tr/7470/ed-1/en

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 2022 – All rights reserved
---------------------- Page: 4 ----------------------
ISO/DTR 7470:2022(:(E)
Valve outlet for gas
© ISO 2022 – All rights reserved v
---------------------- Page: 5 ----------------------
ISO/DTR 7470:(E)
Gas cylinders – — List of provisions
1 Scope
This document lists gas cylinders valve outlets in use.
This document provides details of thread types and sizes.

NOTE Complete descriptions of particular valve outlets are given in national standards.

2 Normative references
There are no normative references in this document.
3 Terms and definitions
No terms and definitions are listed in this document.

ISO and IEC maintain terminologicalterminology 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/
4 Valve outlets by countries and by threads

Table 1The nominal dimensions, designations and references in national standards of valve outlets are

provided in the following tables. For each gas, there are a table presented valve outlets by countries and

a table presented valve outlet by threads. All of the pressures are given in bar. In case of doubt, refer to

the applicable valve outlet standard.

The Table below lists the gas and the corresponding tabs in the spreadsheet available at:

https://standards.iso.org/iso/tr/7470/ed-1/enExcel file, where the nominal dimensions, designations

and references of valve outlets found in national standards are presented by country and by thread type.

All of the pressures are given in bar. In case of doubt, refer to the applicable valve outlet standard.

NOTE The pressure ratings in the table are taken from the standards.

NOTE Pressure The pressure rating for compressed gas normally corresponds to the working pressure of the

gas cylinder and for liquefied gases to the test pressure of the gas cylinder.
Table 1 – — List of gas with the corresponding tabs
Gas UN number Valve outlets Valve outlets
by countries by threads
1030 Table 1Table Table 2
1,1 - DIFLUOROETHANE
1,1,1,2-TETRAFLUOROETHANE (R134a) 3159 Table 3 Table 4
1,1,1-TRICHLOROTRIFLUOROETHANE Table 5 Table 6
1,1,2-TRICHLOROTRIFLUOROETHANE (R113) Table 7 Table 8
1, 1-DICHLOROTETRAFLUOROETHANE (R114a) Table 9 Table 10
1,1-DIFLUOROETHYLENE 1959 Table 11 Table 12
1, 2-DIBROMOTETRAFLUOROETHANE (R114B2) Table 13 Table 14
1,2-DICHLORODIFLUOROETHYLENE Table 15 Table 16
1,2-DICHLOROETHYLENE (R1130) 1150 Table 17 Table 18
1, 2-DICHLOROHEXAFLUOROCYCLOBUTANE (RC316) Table 19 Table 20
© ISO 2022 – All rights reserved 1
---------------------- Page: 6 ----------------------
ISO/DTR 7470:(E)
Gas UN number Valve outlets Valve outlets
by countries by threads
1,3-BUTADIENE-1,3 1010 Table 21 Table 22
1.1.1TRIFLUOROETHANE OR R143A 2035 Table 23 Table 24
1-CHLORO 1,1-DIFLUORETHANE 2517 Table 25 Table 26
1-CHLORO-1, 2, 2, 2-TETRAFLUOROETHANE (R124) Table 27 Table 28
1-CHLORO-2, 2, 2-TRIFLUOROETHANE (R133a) Table 29 Table 30
2,3,3,3,-TETRAFLUORO-1-PROPENE (R1234yf) Table 31 Table 32
2-METHYLPROPENE 1055 Table 33 Table 34
3-METHYL 1-BUTENE 2561 Table 35 Table 36
ACETYLENE 1001 Table 37 T
...