Rubber hoses and hose assemblies for bulk fuel delivery by truck — Specification

This document specifies the requirements for two groups of rubber hoses and rubber hose assemblies for loading and discharge of liquid hydrocarbon fuels with a maximum working pressure of 1,0 MPa (10 bar). Both groups of hoses are designed for a) use with hydrocarbon fuels having an aromatic-hydrocarbon content not exceeding 50 % by volume and containing up to 15 % of oxygenated compounds, and b) operation within the temperature range of −30 °C to +70 °C, undamaged by climatic conditions of −50 °C to +70 °C when stored in static conditions. NOTE Hoses for use at temperatures lower than −30 °C can be the subject of discussion between manufacturer and end user. This document is not applicable to hoses and hose assemblies for LPG systems, aviation fuel systems, fuel station systems or marine applications.

Tuyaux en caoutchouc et assemblages de tuyaux pour livraison en vrac d'hydrocarbures liquides par camions-citernes — Spécifications

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Published
Publication Date
16-Sep-2021
Current Stage
6060 - International Standard published
Start Date
17-Sep-2021
Completion Date
17-Sep-2021
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INTERNATIONAL ISO
STANDARD 2929
Fifth edition
2021-09
Rubber hoses and hose assemblies
for bulk fuel delivery by truck —
Specification
Tuyaux en caoutchouc et assemblages de tuyaux pour livraison en
vrac d'hydrocarbures liquides par camions-citernes — Spécifications
Reference number
ISO 2929:2021(E)
ISO 2021
---------------------- Page: 1 ----------------------
ISO 2929:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

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 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 2929:2021(E)
Contents Page

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

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

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

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Classification ............................................................................................................................................................................................................ 2

5 Materials and construction ....................................................................................................................................................................... 2

6 Dimensions ................................................................................................................................................................................................................. 3

6.1 Nominal bore, internal diameter, outside diameter and their tolerances, service

reeling diameter and minimum bend radius ................................................................................................................ 3

6.2 Concentricity............................................................................................................................................................................................. 3

6.3 Tolerance on length ............................................................................................................................................................................. 3

6.4 Minimum thickness of lining and cover ............................................................................................................................ 3

7 Physical properties ............................................................................................................................................................................................ 4

7.1 Rubber compounds ............................................................................................................................................................................. 4

7.2 Finished hoses and hose assemblies .................................................................................................................................... 4

8 Electrical resistance .......................................................................................................................................................................................... 5

8.1 General ........................................................................................................................................................................................................... 5

8.2 M-grade ......................................................................................................................................................................................................... 5

8.3 Ω-grade .......................................................................................................................................................................................................... 6

9 Frequency of testing .......................................................................................................................................................................................... 6

10 Marking .......................................................................................................................................................................................................................... 6

10.1 Hoses ............................................................................................................................................................................................................... 6

10.2 Hose assemblies ..................................................................................................................................................................................... 7

Annex A (normative) Method of test for strength of adhesion between components ......................................8

Annex B (normative) Method of test for flexibility at 20 °C .......................................................................................................... 9

Annex C (normative) Method of test for flammability ....................................................................................................................10

Annex D (normative) Test method for security of coupling attachment .....................................................................12

Annex E (normative) Tests to be carried out as part of type and routine testing ...............................................13

Annex F (informative) Recommended tests for production acceptance testing ..................................................14

© ISO 2021 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 2929:2021(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 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 45, Rubber and rubber products,

Subcommittee SC 1, Rubber and plastics hoses and hose assemblies.

This fifth edition cancels and replaces the fourth edition (ISO 2929:2014), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— normative references (Clause 2) updated;
— editorial changes to Clause 9 and Clause 10;
— pressure units changed to MPa (bar).

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 2021 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 2929:2021(E)
Rubber hoses and hose assemblies for bulk fuel delivery by
truck — Specification

WARNING — Persons using this document should be familiar with normal laboratory practice.

This document does not purport to address all of the safety problems, if any, associated with its

use. It is the responsibility of the user to establish appropriate safety and health practices and to

determine the applicability of any other restrictions.
1 Scope

This document specifies the requirements for two groups of rubber hoses and rubber hose assemblies

for loading and discharge of liquid hydrocarbon fuels with a maximum working pressure of

1,0 MPa (10 bar).
Both groups of hoses are designed for

a) use with hydrocarbon fuels having an aromatic-hydrocarbon content not exceeding 50 % by volume

and containing up to 15 % of oxygenated compounds, and

b) operation within the temperature range of −30 °C to +70 °C, undamaged by climatic conditions of

−50 °C to +70 °C when stored in static conditions.

NOTE Hoses for use at temperatures lower than −30 °C can be the subject of discussion between

manufacturer and end user.

This document is not applicable to hoses and hose assemblies for LPG systems, aviation fuel systems,

fuel station systems or marine applications.
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 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties

ISO 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests

ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing

ISO 1817:2015, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids

ISO 4649:2017, Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using a

rotating cylindrical drum device

ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of

hoses and the lengths of hose assemblies

ISO 7233, Rubber and plastics hoses and hose assemblies — Determination of resistance to vacuum

ISO 7326:2016, Rubber and plastics hoses — Assessment of ozone resistance under static conditions

ISO 8031, Rubber and plastics hoses and hose assemblies — Determination of electrical resistance and

conductivity

ISO 8033, Rubber and plastics hoses — Determination of adhesion between components

© ISO 2021 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO 2929:2021(E)
ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary

ISO 10619-1, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 1:

Bending tests at ambient temperature

ISO 10619-2, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 2:

Bending tests at sub-ambient temperatures
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 8330 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/
4 Classification
Hoses are designated as belonging to one of the following groups.

a) Group D: delivery hose, or, with certain restrictions, for use in low-vacuum applications (see

footnote to Table 3).
b) Group SD: suction and delivery hose, helix-reinforced.
Both of these groups can be

— electrically bonded, in which case the hose is designated and marked M-grade, or

— electrically conductive, using a conductive rubber layer, in which case the hose is designated and

marked Ω-grade.
5 Materials and construction
If the hose is mandrel-built, particulate-type release agents shall not be used.

The hose shall be uniform in quality and free from porosity, air-holes, foreign inclusions and other

defects.
The hose shall consist of the following:
a) a lining of rubber resistant to hydrocarbon fuels;

b) a reinforcement of layers of woven, braided or spirally wound textile material;

c) an embedded helix reinforcement (group SD only);
d) two or more low-resistance electrical bonding wires (M-grade only);

e) an outer cover of rubber, resistant to abrasion, outdoor exposure and hydrocarbon fuels.

2 © ISO 2021 – All rights reserved
---------------------- Page: 6 ----------------------
ISO 2929:2021(E)
6 Dimensions

6.1 Nominal bore, internal diameter, outside diameter and their tolerances, service

reeling diameter and minimum bend radius

When measured in accordance with ISO 4671, the internal diameter and outside diameter and their

tolerances shall conform to the values specified in Table 1.

When determined in accordance with ISO 10619-1, the value of the minimum bend radius shall conform

to the values specified in Table 1.
Table 1 — Dimensions
Tolerance
Tolerance Minimum external
Internal on Outside Minimum bend
on outside diameter of reeling
diameter internal diameter radius
Nominal
diameter drum used in service
diameter
bore
mm mm mm mm mm mm
Group D Group SD Group D Group SD
19 19,0 31,0 125 100 250 250
25 25,0 37,0 150 125 300 300
±0,5 ±1,0
32 32,0 44,0 200 150 400 350
38 38,0 51,0 250 175 500 400
50 50,0 66,0 300 225 600 500
±0,7
51 51,0 67,0 300 225 600 500
63 63,0 79,0 ±1,2 400 275 800 600
75 75,0 91,0 450 350 900 750
76 76,0 ±0,8 92,0 450 350 900 750
100 100,0 116,0 600 450 N.A. N.A.
±1,6
101 101,5 118,0 600 450 N.A. N.A.
150 150,0 ±1,6 170,0 ±2,0 900 750 N
...

INTERNATIONAL ISO
STANDARD 2929
Fifth edition
Rubber hoses and hose assemblies
for bulk fuel delivery by truck —
Specification
Tuyaux en caoutchouc et assemblages de tuyaux pour livraison en
vrac d'hydrocarbures liquides par camions-citernes — Spécifications
PROOF/ÉPREUVE
Reference number
ISO 2929:2021(E)
ISO 2021
---------------------- Page: 1 ----------------------
ISO 2929:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

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 PROOF/ÉPREUVE © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 2929:2021(E)
Contents Page

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

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

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

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Classification ............................................................................................................................................................................................................ 2

5 Materials and construction ....................................................................................................................................................................... 2

6 Dimensions ................................................................................................................................................................................................................. 3

6.1 Nominal bore, internal diameter, outside diameter and their tolerances, service

reeling diameter and minimum bend radius ................................................................................................................ 3

6.2 Concentricity............................................................................................................................................................................................. 3

6.3 Tolerance on length ............................................................................................................................................................................. 3

6.4 Minimum thickness of lining and cover ............................................................................................................................ 3

7 Physical properties ............................................................................................................................................................................................ 4

7.1 Rubber compounds ............................................................................................................................................................................. 4

7.2 Finished hoses and hose assemblies .................................................................................................................................... 4

8 Electrical resistance .......................................................................................................................................................................................... 5

8.1 General ........................................................................................................................................................................................................... 5

8.2 M-grade ......................................................................................................................................................................................................... 5

8.3 Ω-grade .......................................................................................................................................................................................................... 6

9 Frequency of testing .......................................................................................................................................................................................... 6

10 Marking .......................................................................................................................................................................................................................... 6

10.1 Hoses ............................................................................................................................................................................................................... 6

10.2 Hose assemblies ..................................................................................................................................................................................... 7

Annex A (normative) Method of test for strength of adhesion between components ......................................8

Annex B (normative) Method of test for flexibility at 20 °C .......................................................................................................... 9

Annex C (normative) Method of test for flammability ....................................................................................................................10

Annex D (normative) Test method for security of coupling attachment .....................................................................12

Annex E (normative) Tests to be carried out as part of type and routine testing ...............................................13

Annex F (informative) Recommended tests for production acceptance testing ..................................................14

© ISO 2021 – All rights reserved PROOF/ÉPREUVE iii
---------------------- Page: 3 ----------------------
ISO 2929:2021(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 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 45, Rubber and rubber products,

Subcommittee SC 1, Rubber and plastics hoses and hose assemblies.

This fifth edition cancels and replaces the fourth edition (ISO 2929:2014), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— normative references (Clause 2) updated;
— editorial changes to Clause 9 and Clause 10;
— pressure units changed to MPa (bar).

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 PROOF/ÉPREUVE © ISO 2021 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 2929:2021(E)
Rubber hoses and hose assemblies for bulk fuel delivery by
truck — Specification

WARNING — Persons using this document should be familiar with normal laboratory practice.

This document does not purport to address all of the safety problems, if any, associated with its

use. It is the responsibility of the user to establish appropriate safety and health practices and to

determine the applicability of any other restrictions.
1 Scope

This document specifies the requirements for two groups of rubber hoses and rubber hose assemblies

for loading and discharge of liquid hydrocarbon fuels with a maximum working pressure of

1,0 MPa (10 bar).
Both groups of hoses are designed for

a) use with hydrocarbon fuels having an aromatic-hydrocarbon content not exceeding 50 % by volume

and containing up to 15 % of oxygenated compounds and

b) operation within the temperature range of −30 °C to +70 °C, undamaged by climatic conditions of

−50 °C to +70 °C when stored in static conditions.

NOTE Hoses for use at temperatures lower than −30 °C can be the subject of discussion between

manufacturer and end user.

This document is not applicable to hoses and hose assemblies for LPG systems, aviation fuel systems,

fuel station systems or marine applications.
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 37, Rubber, vulcanized or thermoplastic — Determination of tensile stress-strain properties

ISO 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests

ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing

ISO 1817:2015, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids

ISO 4649:2017, Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using a

rotating cylindrical drum device

ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of

hoses and the lengths of hose assemblies

ISO 7233, Rubber and plastics hoses and hose assemblies — Determination of resistance to vacuum

ISO 7326:2016, Rubber and plastics hoses — Assessment of ozone resistance under static conditions

ISO 8031, Rubber and plastics hoses and hose assemblies — Determination of electrical resistance and

conductivity

ISO 8033, Rubber and plastics hoses — Determination of adhesion between components

© ISO 2021 – All rights reserved PROOF/ÉPREUVE 1
---------------------- Page: 5 ----------------------
ISO 2929:2021(E)
ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary

ISO 10619-1, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 1:

Bending tests at ambient temperature

ISO 10619-2, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 2:

Bending tests at sub-ambient temperatures
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 8330 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/
4 Classification
Hoses are designated as belonging to one of the following groups.

a) Group D: delivery hose, or, with certain restrictions, for use in low-vacuum applications (see

footnote to Table 3).
b) Group SD: suction and delivery hose, helix-reinforced.
Both of these groups can be

— electrically bonded, in which case the hose is designated and marked M-grade or

— electrically conductive, using a conductive rubber layer, in which case the hose is designated and

marked Ω-grade.
5 Materials and construction
If the hose is mandrel-built, particulate-type release agents shall not be used.

The hose shall be uniform in quality and free from porosity, air-holes, foreign inclusions and other

defects.
The hose shall consist of the following:
a) a lining of rubber resistant to hydrocarbon fuels;

b) a reinforcement of layers of woven, braided or spirally wound textile material;

c) an embedded helix reinforcement (group SD only);
d) two or more low-resistance electrical bonding wires (M-grade only);

e) an outer cover of rubber, resistant to abrasion, outdoor exposure and hydrocarbon fuels.

2 PROOF/ÉPREUVE © ISO 2021 – All rights reserved
---------------------- Page: 6 ----------------------
ISO 2929:2021(E)
6 Dimensions

6.1 Nominal bore, internal diameter, outside diameter and their tolerances, service

reeling diameter and minimum bend radius

When measured in accordance with ISO 4671, the internal diameter and outside diameter and their

tolerances shall conform to the values specified in Table 1.

When determined in accordance with ISO 10619-1, the value of the minimum bend radius shall conform

to the values specified in Table 1.
Table 1 — Dimensions
Tolerance
Tolerance Minimum external
Internal on Outside Minimum bend
on outside diameter of reeling
diameter internal diameter radius
Nominal
diameter drum used in service
diameter
bore
mm mm mm mm mm mm
Group D Group SD Group D Group SD
19 19,0 31,0 125 100 250 250
25 25,0 37,0 150 125 300 300
±0,5 ±1,0
32 32,0 44,0 200 150 400 350
38 38,0 51,0 250 175 500 400
50 50,0 66,0 300 225 600 500
±0,7
51 51,0 67,0 300 225 600 500
63 63,0 79,0 ±1,2 400 275 800 600
75 75,0 91,0 450 350 900 750
76 76,0 ±0,8 92,0 450 350 900 750
100 100,0 116,0 600 450 N.A. N.A.
±1,6
101 101,5 118,0 600 450 N.A. N.A.
150 150,0 ±1,6 170,0 ±2,0 900 750 N.A. N.A.
N.A. = not applicable.
6.2 Concentricity
...

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