Rubber hoses and tubing for fuel circuits for internal combustion engines -- Specification

This document specifies the requirements for rubber tubing and hoses used in diesel fuel circuits for internal combustion engines. The diesel fuels covered include "bio-diesels" which consist of the methyl ester of rape seed oil at levels up to 20 % by volume in conventional diesel fuels. This document can also be applied as a classification system to enable original equipment manufacturers (OEMs) to detail a "line call-out" of tests for specific applications where these are not covered by the main types specified (see example in Annex E). In this case, the hose or tubing would not carry any marking showing the number of this document but can detail the OEM's own identification markings as shown on their part drawings.

Tuyaux de caoutchouc et flexibles pour les circuits de carburant pour les moteurs à combustion interne -- Spécifications

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Status
Published
Publication Date
15-Jul-2019
Current Stage
6060 - International Standard published
Start Date
21-Jun-2019
Completion Date
16-Jul-2019
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ISO 19013-1:2019 - Rubber hoses and tubing for fuel circuits for internal combustion engines -- Specification
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INTERNATIONAL ISO
STANDARD 19013-1
Second edition
2019-07
Rubber hoses and tubing for fuel
circuits for internal combustion
engines — Specification —
Part 1:
Diesel fuels
Tuyaux de caoutchouc et flexibles pour les circuits de carburant pour
les moteurs à combustion interne — Spécifications —
Partie 1: Carburants diesel
Reference number
ISO 19013-1:2019(E)
ISO 2019
---------------------- Page: 1 ----------------------
ISO 19013-1:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

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
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CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 19013-1:2019(E)
Contents Page

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

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

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

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

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

5 Sizes ................................................................................................................................................................................................................................... 3

5.1 Tubing ............................................................................................................................................................................................................. 3

5.2 Hoses ............................................................................................................................................................................................................... 3

6 Performance requirements for hose and tubing ................................................................................................................ 4

7 Frequency of testing .......................................................................................................................................................................................... 6

8 Marking .......................................................................................................................................................................................................................... 6

Annex A (normative) Cleanliness and extractables test................................................................................................................... 7

Annex B (normative) Resistance of tubing to tearing ......................................................................................................................... 9

Annex C (normative) Method for determining the resistance to surface contamination ..........................12

Annex D (normative) Life-cycle test ...................................................................................................................................................................13

Annex E (informative) Example of how a non-standard type of hose or tubing could be

specified by an original equipment manufacturer (OEM) using a matrix .............................................14

Annex F (normative) Type approval tests (as defined in Clause 6) ......................................................................................15

Annex G (normative) Routine tests (as defined in Clause 7) .......................................................................................................16

Annex H (informative) Production acceptance tests ........................................................................................................................17

© ISO 2019 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 19013-1:2019(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 second edition cancels and replaces the first edition (ISO 19013-1:2005), of which it constitutes a

minor revision.
The main changes compared to the previous edition are as follows:
— Normative references have been updated;

— Clause 3 “Terms and definitions” has been introduced to conform to ISO/IEC Directives, Part 2, 2018;

— Editorial changes in Clause 8 “Marking” have been made.
A list of all parts in the ISO 19013 series can be found on the ISO website.

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 2019 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 19013-1:2019(E)
Rubber hoses and tubing for fuel circuits for internal
combustion engines — Specification —
Part 1:
Diesel fuels

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.

1 Scope

This document specifies the requirements for rubber tubing and hoses used in diesel fuel circuits for

internal combustion engines. The diesel fuels covered include “bio-diesels” which consist of the methyl

ester of rape seed oil at levels up to 20 % by volume in conventional diesel fuels.

This document can also be applied as a classification system to enable original equipment manufacturers

(OEMs) to detail a “line call-out” of tests for specific applications where these are not covered by the

main types specified (see example in Annex E). In this case, the hose or tubing would not carry any

marking showing the number of this document but can detail the OEM's own identification markings as

shown on their part drawings.
2 Normative references

The following referenced documents are indispensable for the application 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 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests

ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 1629, Rubber and latices — Nomenclature

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

ISO 3302-1, Rubber — Tolerances for products — Part 1: Dimensional tolerances

ISO 4926, Road vehicles — Hydraulic braking systems — Non-petroleum-base reference fluids

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

hoses and the lengths of hose assemblies

ISO 6133, Rubber and plastics — Analysis of multi-peak traces obtained in determinations of tear strength

and adhesion strength

ISO 7233:2016, 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 2019 – All rights reserved 1
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ISO 19013-1:2019(E)

ISO 10619-1:2017, 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

ISO 23529, Rubber — General procedures for preparing and conditioning test pieces for physical test methods

SAE J2027, Standard for Protective Covers for Gasoline Fuel Line Tubing

SAE J2044: 2009, Quick Connect Coupling Specification for Liquid Fuel and Vapor/Emissions Systems

SAE J2260, Nonmetallic Fuel System Tubing with One or More Layers

EN 14214, Automotive fuels — Fatty acid methyl esters (FAME) for diesel engines — Requirements and

test methods
3  Terms and definitions
No terms and definitions are listed in this document.

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 http: //www .electropedia .org/
4  Classification

The product shall consist of extruded rubber materials with or without an integral reinforcement

which may or may not be pre-formed before final vulcanization. The product may also have a rubber

or thermoplastic barrier layer, either as an internal layer or forming the inner liner, to impart improved

fluid resistance and/or reduced fuel vapour permeability.
Seven hoses and tubings for specific applications are specified, as follows:
— Type 1

— Class A = Pressurized [0,7 MPa (7 bar) working pressure] feed and return lines from the fuel

tank to the engine compartment (−40 °C to +80 °C continuous)

— Class B = Pressurized [0,2 MPa (2 bar) working pressure] feed and return lines from the fuel

tank to the engine compartment (−40 °C to +80 °C continuous)
— Type 2

— Class A = Pressurized [0,7 MPa (7 bar) working pressure] feed and return lines in the engine

compartment (−40 °C to +100 °C continuous)

— Class B = Pressurized [0,2 MPa (2 bar) working pressure] feed and return lines in the engine

compartment (−40 °C to +100 °C continuous)
— Type 3

— Class A = Pressurized [0,7 MPa (7 bar) working pressure] feed and return lines in the engine

compartment (−40 °C to +125 °C continuous)

— Class B = Pressurized [0,2 MPa (2 bar) working pressure] feed and return lines in the engine

compartment (−40 °C to +125 °C continuous)

— Type 4 Low pressure [0,12 MPa (1,2 bar) working pressure] fuel filler, vent and vapour handling

(−40 °C to +80 °C continuous)
2 © ISO 2019 – All rights reserved
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ISO 19013-1:2019(E)
5 Sizes
5.1 Tubing

When determined by the methods described in ISO 4671, inside diameters and wall thicknesses shall

be as specified in Table 1.

Tolerances shall be selected from the appropriate categories specified in ISO 3302-1: M3 for moulded

hoses: E2 for extrusions.

The thickness of the barrier layer, where applicable, shall be included in the total nominal wall thickness

shown in Table 1.
Table 1 — Tubing inside diameters and wall thicknesses
Inside diameter Wall thickness
mm mm
3,5 3,5
4 3,5
5 4
7 4,5
9 4,5
11 4,5
13 4,5

NOTE For information, the unions on which the tubing is fitted have the following diameters: 4 mm, 4,5 mm,

6 mm or 6,35 mm, 8 mm, 10 mm, 12 mm and 14 mm.
5.2 Hoses

When determined by the methods described in ISO 4671, the dimensions and concentricity of hoses

shall be in accordance with Tables 2 and 3.

The thickness of the barrier layer, where applicable, shall be included in the total nominal wall thickness

shown in Table 2.
© ISO 2019 – All rights reserved 3
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ISO 19013-1:2019(E)
Table 2 — Hose dimensions
Dimensions in millimetres
Inside diameter Tolerance Wall thickness Outside diameter Tolerance
3,5 ±0,3 3 9,5 ±0,4
4 ±0,3 3 10 ±0,4
5 ±0,3 3 11 ±0,4
6 ±0,3 3 12 ±0,4
7 ±0,3 3 13 ±0,4
7,5 ±0,3 3 13,5 ±0,4
8 ±0,3 3 14 ±0,4
9 ±0,3 3 15 ±0,4
11 ±0,3 3,5 18 ±0,4
12 ±0,3 3,5 19 ±0,4
13 ±0,4 3,5 20 ±0,6
16 ±0,4 4 24 ±0,6
21 ±0,4 4 29 ±0,6
+05,
31,5 4,25 40 ±1
+05,
40 5 50 ±1
Table 3 — Hose concentricity
Maximum variation from
Inside diameter
concentricity
mm mm
Up to and including 3,5 0,4
Over 3,5 0,8
6 Performance requirements for hose and tubing

Tests shall be selected from the following list for each application of hose or tubing, based on the

performance requirements for the finished product. Type approval tests (as defined in Clause 7) for

each hose or tubing group given in Annex F shall be used.

a) Burst pressure: When determined in accordance with ISO 1402, the minimum burst pressure for

Types 1, 2 and 3, Class A, shall be 3,0 MPa gauge (30 bar) and for Class B shall be 1,2 MPa gauge

(12 bar). Type 4 shall be 0,5 MPa gauge (5 bar). Additionally, after fuel resistance testing [test m)],

hoses and tubing shall not have a burst pressure of less than 75 % of the original burst pressure.

b) Adhesion (for all constructions with two or more bonded layers only): When determined by the

appropriate procedure in ISO 8033, the adhesion between each pair of bonded layers shall not be

less than 1,5 kN/m.

c) Low-temperature flexibility: When tested in accordance with ISO 10619-2:2017, Method B, a

length of
...

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