Rubber hoses and hose assemblies for aircraft ground fuelling and defuelling - Specification (ISO 1825:2017)

ISO 1825:2017 specifies the dimensions and construction of, and requirements for, four types of hose and hose assembly for use in all operations associated with the ground fuelling and defuelling of aircraft.
All four types are designed for:
a)   use with petroleum fuels having an aromatic-hydrocarbon content not exceeding 30 % by volume;
b)   operation within the temperature range of −30 °C to +65 °C and such that they will be undamaged by climatic conditions of −40 °C to +70 °C when stored in static conditions;
c)   operation at up to 2,0 MPa (20 bar) maximum working pressure, including surges of pressure which the hose can be subjected to in service.
NOTE 1    Type C hoses are intended for general pressure applications on all vehicles used for plane fuelling. They can also be used for vehicle/rail car loading and discharge where excessive vacuum does not occur.
NOTE 2    Type F hoses can be used for plane delivery applications on vehicles that are also used for defuelling at high flow rates where type C hoses are not suitable.
NOTE 3    Type E and F hoses can also be used for vehicle/rail car loading and discharge, for trailer to fueller transfer and for elevation platform supply (riser) to provide greater kink resistance.

Gummischläuche und -schlauchleitungen für die Bodenbetankung und Entleerung von Flugzeugen -Anforderungen (ISO 1825:2017)

Dieses Dokumentlegt die Maße, den Aufbau und die Anforderungen an vier Typen von Schläuchen und Schlauchleitungen fest, die bei allen Arbeiten in Zusammenhang mit der Bodenbetankung und Entleerung von Flugzeugen verwendet werden.
Alle vier Typen sind bestimmt für:
a)   die Verwendung mit Kraftstoffen auf Mineralöl-Basis mit einem Volumenanteil an aromatischen Kohlenwasserstoffen, der 30 % nicht übersteigt;
b)   den Betrieb im Temperaturbereich von −30 °C bis +65 °C, so dass sie bei ruhiger Lagerung bei Klimabedingungen von −40 °C bis +70 °C unbeschädigt bleiben;
c)   den Betrieb bei einem maximalen Betriebsdruck bis 2,0 MPa (20 bar) einschließlich Druckspitzen, denen der Schlauch während des Einsatzes ausgesetzt sein kann.
ANMERKUNG 1   Schläuche vom Typ C sind für die Anwendung bei üblichem Druck an allen Fahrzeugen zur Flugzeugbetankung vorgesehen. Sie können auch zum Füllen und Entleeren von Fahrzeugen/Eisenbahnwagen verwendet werden, wenn kein übermäßiges Vakuum auftritt.
ANMERKUNG 2   Schläuche vom Typ F können zur Flugzeugbetankung durch Fahrzeuge verwendet werden, die auch zur Entleerung bei hohen Fließgeschwindigkeiten dienen, wofür Schläuche vom Typ C nicht geeignet sind.
ANMERKUNG 3   Schläuche vom Typ E und Typ F können auch zum Füllen und Entleeren von Fahrzeugen/Eisenbahnwagen, zur Übergabe vom Anhänger zum Zugfahrzeug und zur Versorgung von Hebebühnen (Steigleitungen) verwendet werden, um einen größeren Knickwiderstand zu haben.

Tuyaux et flexibles en caoutchouc pour le ravitaillement carburant et la vidange des avions au sol - Spécifications (ISO 1825:2017)

ISO 1825:2017 spécifie les dimensions, et la construction de, et les exigences pour, quatre types de tuyaux et de flexibles destinés à être utilisés pour toutes les opérations de ravitaillement et de déchargement de carburant des avions au sol.
Les quatre types sont conçus pour:
a)    être utilisés avec des carburants à base de pétrole dont la teneur en hydrocarbures aromatiques ne dépasse pas 30 % en volume;
b)    fonctionner dans une plage de température de ?30 °C à +65 °C et être ne pas être endommagés dans des conditions climatiques de ?40 °C à +70 °C lorsqu'ils sont stockés en condition statique;
c)    fonctionner jusqu'à une pression maximale de service de 2,0 MPa (20 bar), y compris les surpressions subies en service.
NOTE 1    Les tuyaux de type C sont destinés aux applications générales pour tout véhicule utilisé pour le ravitaillement en carburant des avions. Ils peuvent aussi être utilisés pour le remplissage et le déchargement de citerne/wagon lorsqu'il n'y a pas de vide excessif.
NOTE 2    Les tuyaux de type F peuvent être utilisés pour la livraison de carburant aux avions sur des véhicules utilisés aussi pour le déchargement à haut débit lorsque les types C ne conviennent pas.
NOTE 3    Les tuyaux de type E et F peuvent aussi être utilisés pour le remplissage et le déchargement de citerne/wagon, pour les remorques à transfert de carburant et pour les plates formes élévatrices afin d'avoir une meilleure résistance au coquage.

Gumene cevi in cevni priključki za pretakanje in praznjenje goriv letal na tleh - Specifikacija (ISO 1825:2017)

Ta dokument določa dimenzije, konstrukcijo in zahteve štirih vrst
cevi in cevnih priključkov, ki se uporabljajo pri vseh dejavnostih, povezanih s pretakanjem in praznjenjem goriv letal na tleh.
Vse štiri vrste so zasnovane za:
a) uporabo z naftnimi gorivi, katerih vsebnost aromatskega ogljikovodika ne presega 30 % glede na prostornino;
b) uporabo v temperaturnem razponu od –30 °C do 65 °C, pri čemer se ne poškodujejo
v okoljskih pogojih pri temperaturah od –40 °C do 70 °C, ko so shranjeni v statičnih pogojih;
c) uporabo pri delovnem tlaku do 2,0 MPa (20 barov), vključno s povišanji tlaka, ki jim je cev lahko izpostavljena med uporabo.
OPOMBA 1: Cevi vrste C so namenjene splošni uporabi v tlačnih sistemih na vseh vozilih, ki se uporabljajo za pretakanje goriva letal.
Uporabljajo se lahko tudi za polnjenje in praznjenje vozil/vagonov z gorivom, če ne pride do prevelikega vakuuma.
OPOMBA 2: Cevi vrste F se lahko uporabljajo za sisteme polnjenja letal na vozilih, ki se uporabljajo tudi za praznjenje pri nizkem pretoku, ko cevi vrste C niso primerne za uporabo.
OPOMBA 3: Cevi vrste E in F se lahko uporabljajo za polnjenje in praznjenje vozil/vagonov z gorivom, za prenos goriva iz priklopnika v vozilo za polnjenje goriva ter za polnjenje dvižnih ploščadi za zagotavljanje boljše stabilnosti.

General Information

Status
Published
Publication Date
19-Dec-2017
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
20-Dec-2017
Completion Date
20-Dec-2017

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SLOVENSKI STANDARD
SIST EN ISO 1825:2018
01-marec-2018
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SIST EN ISO 1825:2012

*XPHQHFHYLLQFHYQLSULNOMXþNL]DSUHWDNDQMHLQSUD]QMHQMHJRULYOHWDOQDWOHK

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Rubber hoses and hose assemblies for aircraft ground fuelling and defuelling -
Specification (ISO 1825:2017)
Gummischläuche und -schlauchleitungen für die Bodenbetankung und Entleerung von
Flugzeugen - Anforderungen (ISO 1825:2017)

Tuyaux et flexibles en caoutchouc pour le ravitaillement carburant et la vidange des

avions au sol - Spécifications (ISO 1825:2017)
Ta slovenski standard je istoveten z: EN ISO 1825:2017
ICS:
49.100 Oprema za servis in Ground service and
vzdrževanje na tleh maintenance equipment
83.140.40 Gumene cevi Hoses
SIST EN ISO 1825:2018 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 1825:2018
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SIST EN ISO 1825:2018
EN ISO 1825
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2017
EUROPÄISCHE NORM
ICS 23.040.70; 49.100 Supersedes EN ISO 1825:2011
English Version
Rubber hoses and hose assemblies for aircraft ground
fuelling and defuelling - Specification (ISO 1825:2017)

Tuyaux et flexibles en caoutchouc pour le Gummischläuche und -schlauchleitungen für die

ravitaillement carburant et la vidange des avions au sol Bodenbetankung und Entleerung von Flugzeugen -

- Spécifications (ISO 1825:2017) Anforderungen (ISO 1825:2017)
This European Standard was approved by CEN on 17 November 2017.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this

European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references

concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN

member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by

translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management

Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,

Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2017 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 1825:2017 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 1825:2018
EN ISO 1825:2017 (E)
Contents Page

European foreword ....................................................................................................................................................... 3

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SIST EN ISO 1825:2018
EN ISO 1825:2017 (E)
European foreword

This document (EN ISO 1825:2017) has been prepared by Technical Committee ISO/TC 45 “Rubber and

rubber products" in collaboration with Technical Committee CEN/TC 218 “Rubber and plastics hoses

and hose assemblies” the secretariat of which is held by BSI.

This European Standard shall be given the status of a national standard, either by publication of an

identical text or by endorsement, at the latest by June 2018 and conflicting national standards shall be

withdrawn at the latest by June 2018.

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

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 1825:2011.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the

following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,

Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,

France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,

Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
Endorsement notice

The text of ISO 1825:2017 has been approved by CEN as EN ISO 1825:2017 without any modification.

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SIST EN ISO 1825:2018
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SIST EN ISO 1825:2018
INTERNATIONAL ISO
STANDARD 1825
Fourth edition
2017-11
Rubber hoses and hose assemblies
for aircraft ground fuelling and
defuelling — Specification
Tuyaux et flexibles en caoutchouc pour le ravitaillement carburant et
la vidange des avions au sol — Spécifications
Reference number
ISO 1825:2017(E)
ISO 2017
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SIST EN ISO 1825:2018
ISO 1825:2017(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland

All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved
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SIST EN ISO 1825:2018
ISO 1825:2017(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

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

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

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

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

5 Service reeling diameter .............................................................................................................................................................................. 2

6 Material and construction .......................................................................................................................................................................... 3

6.1 Hoses ............................................................................................................................................................................................................... 3

6.2 Hose assemblies ..................................................................................................................................................................................... 3

7 Dimensions and tolerances ....................................................................................................................................................................... 3

7.1 Internal diameters ............................................................................................................................................................................... 3

7.2 Thickness ..................................................................................................................................................................................................... 4

7.3 Concentricity............................................................................................................................................................................................. 4

7.4 Tolerances on length .......................................................................................................................................................................... 4

7.5 Mass per unit length of hose ....................................................................................................................................................... 4

8 Physical properties ............................................................................................................................................................................................ 5

8.1 Rubber compounds ............................................................................................................................................................................. 5

8.2 Finished hoses and hose assemblies .................................................................................................................................... 5

9 Electrical properties ......................................................................................................................................................................................... 7

9.1 Type B and type E (electrically bonded) ........................................................................................................................... 7

9.2 Type C and type F (electrically conductive incorporating a semi-conductive

cover compound) .................................................................................................................................................................................. 7

10 Frequency of testing .......................................................................................................................................................................................... 7

11 Marking .......................................................................................................................................................................................................................... 8

11.1 Hoses ............................................................................................................................................................................................................... 8

11.2 Hose assemblies ..................................................................................................................................................................................... 8

12  Test certificate or test report ................................................................................................................................................................... 8

13 Cleanliness .................................................................................................................................................................................................................. 9

14 Protection for dispatch and storage ................................................................................................................................................. 9

Annex A (normative) Method for determination of fuel-soluble matter .....................................................................10

Annex B (normative) Method of test for cold embrittlement ..................................................................................................11

Annex C (normative) Method for determination of adhesion between components .....................................12

Annex D (normative) Method for determination of resistance to fuel contamination .................................13

Annex E (normative) Method of test for flexibility at 20 °C .......................................................................................................14

Annex F (normative) Method of test for flexibility at −30 °C ....................................................................................................15

Annex G (normative) Method of test for crush recovery ..............................................................................................................16

Annex H (normative) Method for determination of cyclic kinking resistance ......................................................17

Annex I (normative) Flammability test...........................................................................................................................................................18

Annex J (normative) Hydrostatic test ...............................................................................................................................................................20

Annex K (normative) Method of test for vacuum resistance ....................................................................................................21

Annex L (normative) Method of test for security of attachment of couplings ........................................................22

Annex M (normative) Type test and routine test ..................................................................................................................................23

© ISO 2017 – All rights reserved iii
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SIST EN ISO 1825:2018
ISO 1825:2017(E)

Annex N (informative) Recommended tests for production acceptance test ..........................................................24

Annex O (informative) Recommendations practice for hose flushing and handling ......................................25

Bibliography .............................................................................................................................................................................................................................27

iv © ISO 2017 – All rights reserved
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SIST EN ISO 1825:2018
ISO 1825:2017(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 on 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 the following

URL: 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 fourth edition cancels and replaces the third edition (ISO 1825:2010), which has been technically

revised.
The main changes compared to the previous edition are as follows:
— the normative references have been updated;

— fuel discoloration test has been added to bring the document in line with EI 1529.

© ISO 2017 – All rights reserved v
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SIST EN ISO 1825:2018
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SIST EN ISO 1825:2018
INTERNATIONAL STANDARD ISO 1825:2017(E)
Rubber hoses and hose assemblies for aircraft ground
fuelling and defuelling — Specification
1 Scope

This document specifies the dimensions and construction of, and requirements for, four types of

hose and hose assembly for use in all operations associated with the ground fuelling and defuelling of

aircraft.
All four types are designed for:

a) use with petroleum fuels having an aromatic-hydrocarbon content not exceeding 30 % by volume;

b) operation within the temperature range of −30 °C to +65 °C and such that they will be undamaged

by climatic conditions of −40 °C to +70 °C when stored in static conditions;

c) operation at up to 2,0 MPa (20 bar) maximum working pressure, including surges of pressure which

the hose can be subjected to in service.

NOTE 1 Type C hoses are intended for general pressure applications on all vehicles used for plane fuelling.

They can also be used for vehicle/rail car loading and discharge where excessive vacuum does not occur.

NOTE 2 Type F hoses can be used for plane delivery applications on vehicles that are also used for defuelling at

high flow rates where type C hoses are not suitable.

NOTE 3 Type E and F hoses can also be used for vehicle/rail car loading and discharge, for trailer to fueller

transfer and for elevation platform supply (riser) to provide greater kink resistance.

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 1382, Rubber — Vocabulary
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 4649:2010, 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 6246, Petroleum products — Gum content of fuels — Jet evaporation method

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

ISO 7989-1, Steel wire and wire products — Non-ferrous metallic coatings on steel wire — Part 1: General

principles
© ISO 2017 – All rights reserved 1
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SIST EN ISO 1825:2018
ISO 1825:2017(E)

ISO 7989-2, Steel wire and wire products — Non-ferrous metallic coatings on steel wire — Part 2: Zinc or

zinc-alloy coating

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 8330, Rubber and plastics hoses and hose assemblies — Vocabulary

ISO 10619-2:2011, 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 1382 and ISO 8330 and the

following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1
hose assembly
hose with either permanent or reusable end fittings attached
3.2
electrically bonded hose/hose assembly

hose/hose assembly (3.1) that uses a metallic wire connection to conduct static electricity

3.3
electrically conductive hose/hose assembly

hose/hose assembly (3.1) that is capable of conducting static electrical charges, using a conductive

rubber layer, without the use of a metallic wire
4  Classification

Hoses for this application are classified into four types and two grades according to their construction

and electrical properties.
Type Grade Construction

B M Electrically bonded, incorporating at least two low-resistance electrically conductive

wires and a conductive cover compound
C Ω Electrically conductive, incorporating a conductive cover compound

E M Electrically bonded, incorporating at least one metallic wire helix, at least two

low-resistance electrically conductive wires and a conductive cover compound. Has

an enhanced defuelling capability

F Ω Electrically conductive, incorporating at least one non-electrically conductive

non-metallic helix and a conductive cover compound
5 Service reeling diameter

Hoses shall be designed for operation on equipment fitted with hose reels of the diameters given in

Table 1.
2 © ISO 2017 – All rights reserved
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SIST EN ISO 1825:2018
ISO 1825:2017(E)

These hoses remain substantially circular in cross-section when reeled on drums and should not be

confused with hoses of the collapsible type that are intended to be reeled flat.
Table 1 — Service reeling diameters
Minimum external diameter of
Nominal internal diameter
reeling drum used in service
of hose
19,0 225
25,0 300
31,5 375
38,0 450
50,0 550
63,0 600
76,0 600
100,0 900
101,5 900
6 Material and construction
6.1 Hoses

If the hose is mandrel-built and vulcanized on a mandrel, particulate-type release agents shall not be

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

other defects when inspected visually.
The hose shall comprise the following components:
— a lining of synthetic rubber resistant to petroleum fuel;

— a reinforcement consisting of layers of woven, braided or spirally wound textile material;

— an outer cover made of synthetic rubber which shall be conductive and resistant to abrasion, outdoor

exposure and petroleum fuel.

For types E and F hoses only, an embedded helix reinforcement shall be included in the construction.

For type E hoses, the wire reinforcement used shall be a hard steel and shall have a galvanized finish in

accordance with ISO 7989-1 and ISO 7989-2.

Types B and E shall also incorporate low-resistance electrically conductive wires to ensure that the

hoses are electrically conductive.
The cover may have a shallow cloth-marked finish.
6.2 Hose assemblies

In order to produce the required electrical properties, the method of attachment of the couplings shall

be in accordance with Clause 9.
7 Dimensions and tolerances
7.1 Internal diameters

When measured in accordance with the most appropriate method in ISO 4671, the internal diameter

shall lie within the tolerance limits specified in Table 2.
© ISO 2017 – All rights reserved 3
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SIST EN ISO 1825:2018
ISO 1825:2017(E)
Table 2 — Internal diameters and tolerances
Internal diameter Tolerance limits
mm mm
19,0 ±0,8
25,0 ±0,8
31,5 ±0,8
38,0 ±0,8
50,0 ±1,2
63,0 ±1,2
76,0 ±1,2
100,0 ±1,6
101,5 ±1,6
7.2 Thickness

When measured in accordance with the most appropriate method in ISO 4671, the thickness of the

lining shall be not less than 1,6 mm.

When measured in accordance with the most appropriate method in ISO 4671, the thickness of the

cover shall be not less than 1,6 mm for hoses of nominal bore less than 50 and not less than 2,0 mm for

hoses of nominal bore 50 and greater.
7.3 Concentricity

When determined in accordance with the most appropriate method in ISO 4671, the concentricity,

based on a total indicator reading between the bore and the outside surface of the cover, shall be no

greater than 1,0 mm.
7.4 Tolerances on length
The tolerances on the measured length shall be ±1 % of the specified length.
7.5 Mass per unit length of hose
The maximum mass per unit length shall be as given in Table 3.
Table 3 — Mass per unit length of hose
Maximum mass per unit length of hose
Nominal internal
Types B and C Types E and F
diameter
kg/m kg/m
19,0 0,9 1,1
25,0 1,1 1,5
31,5 1,4 1,9
38,0 1,7 2,2
50,0 2,7 3,0
63,0 3,5 4,0
76,0 4,0 4,7
100,0 6,5 7,5
101,5 6,5 7,5
4 © ISO 2017 – All rights reserved
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SIST EN ISO 1825:2018
ISO 1825:2017(E)
8 Physical properties
8.1 Rubber compounds

The physical properties of the rubber compounds used for the lining and cover shall comply with the

values given in Table 4, when tested by the methods listed in Table 4. Tests shall be carried out on test

pieces or test samples taken either from the hose or from separately vulcanized sheets, except for the

cold embrittlement and abrasion resistance tests which shall be carried out on moulded test pieces

vulcanized to the same state as the hose. The tests which shall be carried out for type testing and

routine testing are given in Annex M. The tests recommended for production acceptance testing are

given in Annex N.
Table 4 — Requirements for rubber compounds
Requirement
Property Unit Method of test
Lining Cover
Tensile strength, min. MPa 7,0 7,0 ISO 37
(dumb-bell test pieces)
Elongation at break, min. % 250 300 ISO 37
(dumb-bell test pieces)
Change in volume (swelling) in fuel, max. % 50 75 ISO 1817:2015, 8.3
(48 h at 40 °C in liquid B)
Fuel-soluble matter, max. % 4,0 Not Annex A
applicable
Cold embrittlement No cracking No cracking Annex B
Abrasion resistance, max. mm Not 140 ISO 4649:2010, Method A
applicable
Ageing ISO 188 (7 days at 70 °C)
(air-oven method)
Tensile strength change, max. % ±30 ±30 ISO 37 (see above)
Elongation at break change, max. % ±30 ±30 ISO 37 (see above)
8.2 Finished hoses and hose assemblies

Finished hoses and hose assemblies shall meet the requirements specified in Table 5.

Table 5 — Requirements for finished hoses and hose assemblies
Property Requirement Method of test
Hose dimensions
Internal diameter See Table 2 ISO 4671
Lining thickness, min. 1,6 mm ISO 4671
Cover thickness, min. 1,6 mm (nominal bore < 50) ISO 4671
2,0 mm (nominal bore ≥ 50)
Concentricity, max. 1,0 mm ISO 4671
Length tolerances ±1 % ISO 4671
Mass per unit length, max. See Table 3
Hose tests
Adhesion between components 3,0 N/mm Annex C
(dry), min.
2,0 N/mm
After contact with fuel, min.
Fuel contamination, R , max. 10 mg/100 ml Annex D
© ISO 2017 – All rights reserved 5
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SIST EN ISO 1825:2018
ISO 1825:2017(E)
Table 5 (continued)
Property Requirement Method of test
Fuel discolouration Not less than +15 Saybolt for normal hose Annex D
Ozone resistance No cracking observed under ×2 ISO 7326 (40 °C)
magnification

Flexibility at ambient and low No permanent deformation or visible Annex E (20 °C)

temperature structural damage, no increase in
Annex F (−30 °C)
electrical resistance outside the specified
limits, no impairment of electrical
continuity and shall comply with the
proof-pressure requirements in Annex J
at (20 ± 5) °C
Crush recovery (type F only) Annex G
After 1 min Regains 90 % of original diameter
After 10 min Regains 95 % of original diameter
Shall comply with the proof-pressure
requirement in Annex J at (20 ± 5) °C

Cyclic kinking (types B and C No leakage at proof pressure at (20 ± 5) °C Annex H

only)
No increase in electrical resistance or
impairment of electrical continuity
Any adhesion between components to be
less than 2,0 N/mm
Flammability Hose shall cease burning immediately on Annex I
removal of flame and there shall be no
glowing visible after 2 min.
Change in length at working Types B and C: 0 to +7 % Annex J
pressure, max.
Types E and F: 0 to +12 %
Proof pressure At 4,0 MPa (40 bar): Annex J
No leakage or damage
No increase in electrical continuity or
resistance beyond the specified limits
Burst pressure, min. 8,0 MPa (80 bar) Annex J
Vacuum test Types B and C at 15 kPa (0,15 bar) absolute: Annex K
no visible structural damage
Types B and C at 85 kPa (0,85 bar) absolute:
loss of circularity not to exceed 20 % of
internal diameter
Type E at 15 kPa (0,15 bar) absolute: ball
shall pass and no visible structural damage
Type F at 35 kPa (0,35 bar) absolute: ball
shall pass and no visible structural damage
Electrical properties The electrical properties of the hose shall 9.1, 9.2
be such that the electrical req
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