FprEN ISO 1825
(Main)Rubber hoses and hose assemblies for aircraft ground fuelling and defuelling - Specification (ISO/FDIS 1825:2025)
Rubber hoses and hose assemblies for aircraft ground fuelling and defuelling - Specification (ISO/FDIS 1825:2025)
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/FDIS 1825:2025)
Dieses Dokument legt die Maße, den Aufbau und die Anforderungen für 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 unbewegter Lagerung bei Klimabedingungen von −40 °C bis +70 °C unbeschädigt bleiben. Für Tieftemperaturschläuche gilt ein Temperaturbereich von −40 °C bis +65 °C, so dass sie bei unbewegter Lagerung bei Klimabedingungen von −48 °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.
Tuyaux et flexibles en caoutchouc pour le ravitaillement carburant et la vidange des avions au sol - Spécifications (ISO/FDIS 1825:2025)
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/FDIS 1825:2025)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN ISO 1825:2025
01-april-2025
Gumene cevi in cevni priključki za pretakanje in praznjenje goriv letal na tleh -
Specifikacija (ISO/DIS 1825:2025)
Rubber hoses and hose assemblies for aircraft ground fuelling and defuelling -
Specification (ISO/DIS 1825:2025)
Gummischläuche und -schlauchleitungen für die Bodenbetankung und Entleerung von
Flugzeugen - Anforderungen (ISO/DIS 1825:2025)
Tuyaux et flexibles en caoutchouc pour le ravitaillement carburant et la vidange des
avions au sol - Spécifications (ISO/DIS 1825:2025)
Ta slovenski standard je istoveten z: prEN ISO 1825
ICS:
49.100 Oprema za servis in Ground service and
vzdrževanje na tleh maintenance equipment
83.140.40 Gumene cevi Hoses
oSIST prEN ISO 1825:2025 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN ISO 1825:2025
oSIST prEN ISO 1825:2025
DRAFT
International
Standard
ISO/DIS 1825
ISO/TC 45/SC 1
Rubber hoses and hose assemblies
Secretariat: DIN
for aircraft ground fuelling and
Voting begins on:
defuelling — Specification
2025-01-28
Tuyaux et flexibles en caoutchouc pour le ravitaillement
Voting terminates on:
carburant et la vidange des avions au sol — Spécifications
2025-04-22
ICS: 49.100; 83.140.40
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
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POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
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.
Reference number
ISO/DIS 1825:2025(en)
oSIST prEN ISO 1825:2025
DRAFT
ISO/DIS 1825:2025(en)
International
Standard
ISO/DIS 1825
ISO/TC 45/SC 1
Rubber hoses and hose assemblies
Secretariat: DIN
for aircraft ground fuelling and
Voting begins on:
defuelling — Specification
Tuyaux et flexibles en caoutchouc pour le ravitaillement
Voting terminates on:
carburant et la vidange des avions au sol — Spécifications
ICS: 49.100; 83.140.40
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2025
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
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NOTIFICATION OF ANY RELEVANT PATENT
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Published in Switzerland Reference number
ISO/DIS 1825:2025(en)
ii
oSIST prEN ISO 1825:2025
ISO/DIS 1825:2025(en)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Classification . 2
5 Service reeling diameter . 3
6 Material and construction . 3
6.1 Hoses .3
6.2 Hose assemblies .4
7 Dimensions and tolerances . 4
7.1 Inside diameters.4
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 .6
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) .8
10 Frequency of testing . . 8
10.1 Hoses .8
10.2 Hose assemblies .8
11 Marking . . 8
11.1 Hoses .8
11.2 Hose assemblies .9
12 Test certificate or test report . 9
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 low temperature flexibility at −30 °C (for normal
temperature class) and -40 °C (for low temperature class) .15
Annex G (normative) Method of test for crush recovery .16
Annex H (normative) Method for determination of cyclic kinking resistance .18
Annex I (normative) Flammability test . 19
Annex J (normative) Hydrostatic test .21
Annex K (normative) Method of test for vacuum resistance .22
Annex L (normative) Method of test for security of attachment of couplings .23
iii
oSIST prEN ISO 1825:2025
ISO/DIS 1825:2025(en)
Annex M (normative) Type test and routine test .24
Annex N (informative) Recommendations practice for hose flushing and handling .25
Bibliography .27
iv
oSIST prEN ISO 1825:2025
ISO/DIS 1825:2025(en)
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 fifth edition cancels and replaces the fourth edition (ISO 1825:2017), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— the normative references have been updated;
— 2 temperatures classes have been added (to bring the document in line with EI 1529)
— nominal sizes 51 and 75 have been added
— the possibility to deliver hose to assembler has been added (surplus of the bonding wires for Types E and F)
— working pressure test has been removed (Table 5 and Annexe J to bring the document in line with
EI 1529)
— the ozone testing has been modified at 1 ppm instead of 0,5 ppm to align with EI1529
— frequency testings recommended tests for production acceptance test have been removed
— Annexes F and G (to bring the document in line with EI 1529) have been rewritted
— fuel discoloration test has been added to bring the document in line with EI 1529.
v
oSIST prEN ISO 1825:2025
oSIST prEN ISO 1825:2025
DRAFT International Standard ISO/DIS 1825:2025(en)
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; For LT hose, the temperature
range of −40 °C to +65 °C and such that they will be undamaged by climatic conditions of −48 °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 1817:2024, 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 6246, Petroleum products — Gum content of fuels — Jet evaporation method
ISO 7326, Rubber and plastics hoses — Assessment of ozone resistance under static conditions
oSIST prEN ISO 1825:2025
ISO/DIS 1825:2025(en)
ISO 7989-1, Steel wire and wire products — Non-ferrous metallic coatings on steel wire — Part 1: General
principles
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 10619-1:2017, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 1:
Bending tests at ambient temperature
ISO 10619-2:2021, 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 https:// 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. Each type of hose shall be divided into two temperature classes :
— Normal temperature class with an ambient working temperature of -30 °C to + 65 °C
— Low temperature class (LT) with an ambient working temperature of -40 °C to + 65 °C
oSIST prEN ISO 1825:2025
ISO/DIS 1825:2025(en)
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.
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 outside diameter of
Nominal size
reeling drum used in service
of hose
mm
19 225
25 300
31,5 375
38 450
50 550
51 550
63 600
75 600
76 600
100 900
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.
oSIST prEN ISO 1825:2025
ISO/DIS 1825:2025(en)
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 Inside diameters
The diameters of the hoses shall be measured in accordance with the most appropriate method in ISO 4671.
The inside diameter shall lie within the tolerance limits specified in Table 2.
Table 2 — Nominal size, inside diameters and tolerances
Inside diameter Tolerance limits
Nominal size
mm mm
19 19,0 ±0,8
25 25,0 ±0,8
31,5 31,5 ±0,8
38 38,0 ±0,8
50 50,0 ±1,2
51 51,0 ±1,2
63 63,0 ±1,2
76 76,0 ±1,2
100 100,0 ±1,6
NOTE : Other diameters than listed in the table, can be agreed with the customer
7.2 Thickness
The thickness of the lining shall be measured in accordance with the most appropriate method in ISO 4671.
The thickness of the lining shall be not less than 1,6 mm.
The thickness of the cover shall be 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 size less than 50 and not less
than 2,0 mm for hoses of nominal size 50 and greater.
7.3 Concentricity
The concentricity of the hose shall be determined in accordance with ISO 4671. The concentricity, based on a
total indicator reading between the inside diameter 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 of hose or hose assembly shall be ±1 %.
7.5 Mass per unit length of hose
The maximum mass per unit length shall be as given in Table 3.
oSIST prEN ISO 1825:2025
ISO/DIS 1825:2025(en)
Table 3 — Mass per unit length of hose
Maximum mass per unit length of hose
Nominal size
Types B and C Types E and F
kg/m kg/m
19 0,9 1,1
25 1,1 1,5
31,5 1,4 1,9
38 1,7 2,2
50 2,7 3,0
51 2,7 3,0
63 3,5 4,0
75 4,0 4,7
76 4,0 4,7
100 6,5 7,5
101,5 6,5 7,5
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 1817:2024, method B
(48 h at 40 °C in liquid B)
Fuel-soluble matter, max. % Annex A
Normal temperature class 4,0 Not
applicable
Low temperature class 6,0
Cold embrittlement No cracking No cracking Annex B
Abrasion resistance, max. mm 140 ISO 4649:2017, Method A
Not
Normal temperature class 200
applicable
Low temperature class
Ageing ISO 188 (7 days at 70 °C)
(air-oven method)
Tensile strength change. from the origi- % ±30 ±30 ISO 37 (see above)
nal value
Elongation at break change from the % ±30 ±30 ISO 37 (see above)
original value
oSIST prEN ISO 1825:2025
ISO/DIS 1825:2025(en)
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
Inside diameter See Table 2 ISO 4671
Lining thickness, min. 1,6 mm ISO 4671
Cover thickness, min. 1,6 mm (inside diameter < 50) ISO 4671
2,0 mm (inside diameter ≥ 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.
After contact with fuel, min.
2,0 N/mm
Fuel contamination, R , max. 10 mg/100 ml Annex D
e
Fuel discolouration Not less than +15 Saybolt for normal temper- Annex D
ature class
Not less than +10 Saybolt for low temperature
class
Ozone resistance No crackin
...
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