ISO 5772:2015
(Main)Rubber and plastic hoses and hose assemblies for measured fuel dispensing systems — Specification
Rubber and plastic hoses and hose assemblies for measured fuel dispensing systems — Specification
ISO 5772:2015 specifies minimum requirements for three types of hoses in two categories and two classes of hose assemblies used for measured fuel dispensing, including oxygenated fuels (up to a maximum of 15 % oxygenated compounds). The assemblies are intended for use at ambient temperatures between −30 °C and +55 °C for normal temperature class and −40 °C and +55 °C for low temperature class at a working pressure up to and including 16 bar (1,6 MPa). NOTE 1 bar = 0,1 MPa.
Tuyaux et flexibles en caoutchouc et en plastique pour distribution mesurée de carburants — Spécification
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 5772
Second edition
2015-09-15
Rubber and plastic hoses and hose
assemblies for measured fuel
dispensing systems — Specification
Tuyaux et flexibles en caoutchouc et en plastique pour distribution
mesurée de carburants — Spécification
Reference number
ISO 5772:2015(E)
©
ISO 2015
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ISO 5772:2015(E)
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© ISO 2015, Published in Switzerland
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ii © ISO 2015 – All rights reserved
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ISO 5772:2015(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 Pressure requirements . 2
7 Dimensions and tolerances . 3
7.1 Internal diameters and bend radii . 3
7.2 Minimum thickness of lining and cover . 3
7.3 Concentricity. 3
7.4 Tolerance on cut lengths . 3
8 Physical properties . 3
8.1 Compounds . 3
8.2 Finished hose . 4
8.3 Hose assembly . 6
9 End fittings . 6
10 Frequency of testing . 6
11 Type tests . 7
12 Marking . 7
12.1 Hoses . 7
12.2 End fittings . 7
12.3 Hose assemblies . 7
Annex A (normative) Test method for determination of low temperature resistance at
-30 °C (for normal temperature class) and -40 °C (for low temperature class) .8
Annex B (normative) Method for the determination of adhesion between components after
fuel ageing .10
Annex C (normative) Test method for the determination of low temperature flexibility on a
sample of finished hose .11
Annex D (normative) Test method for the determination of fuel permeation .13
Annex E (normative) Test method for flammability .15
Annex F (normative) End-fitting pull-off test .17
Annex G (normative) Test method for fatigue strength under reversed bending stress (flex test) 18
Annex H (normative) Test method for the determination of leakage (leak test) .20
Annex I (normative) Test frequency for type tests and routine tests .21
Annex J (informative) Test frequency for production acceptance tests .22
Bibliography .23
© ISO 2015 – All rights reserved iii
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ISO 5772:2015(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 meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.
The committee responsible for this document is 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 5772:1998), which has been technically
revised to include the following changes:
— working pressure is 16 bar (1,6 MPa) instead of 12 bar (1,2 MPa) but proof pressure and burst
pressure remain the same;
— minimum tensile strength of lining and cover has been increased from 7 MPa to 9 MPa;
— extraction of the lining for low temp hoses has been added and the Low Temperature Bending test
is to be done at 25 °C with the force to bend specified;
— hose fuel permeation, flammability, assembly flex test, and assembly leak test have been added.
All the annexes form an integral part of this International Standard.
iv © ISO 2015 – All rights reserved
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INTERNATIONAL STANDARD ISO 5772:2015(E)
Rubber and plastic hoses and hose assemblies for
measured fuel dispensing systems — Specification
WARNING — Persons using this International Standard should be familiar with normal
laboratory practice. This International Standard 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 ensure compliance with any national regulatory
conditions.
1 Scope
This International Standard specifies minimum requirements for three types of hoses in two categories
and two classes of hose assemblies used for measured fuel dispensing, including oxygenated fuels (up
to a maximum of 15 % oxygenated compounds).
The assemblies are intended for use at ambient temperatures between −30 °C and +55 °C for normal
temperature class and −40 °C and +55 °C for low temperature class at a working pressure up to and
including 16 bar (1,6 MPa).
NOTE 1 bar = 0,1 MPa.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. 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, vulcanised or thermoplastic — Determination of tensile stress-strain properties
ISO 188, Rubber, vulcanized or thermoplastic — Accelerated ageing and heat resistance tests
ISO 1307, Rubber and plastics hoses — Hose sizes, minimum and maximum inside diameters, and tolerances
on cut-to-length hoses
ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 1817, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
ISO 4649, 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 6801, Rubber or plastics hoses — Determination of volumetric expansion
ISO 7326, Rubber and plastics hoses — Assessment of ozone resistance under static conditions
ISO 8031:2009, Rubber and plastics hoses and hose assemblies — Determination of electrical resistance
and conductivity
ISO 8033, Rubber and plastics hose — Determination of adhesion between components
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 2015 – All rights reserved 1
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ISO 5772:2015(E)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 8330 apply.
4 Classification
Hoses for this application shall be divided into the following three types:
a) type 1: textile reinforced;
b) type 2: textile and helical wire reinforced;
c) type 3: fine wire reinforced.
Each type of hose shall be divided into the following two temperature classes:
a) normal temperature class with an ambient working temperature of −30 °C to +55 °C;
b) low temperature class (LT) with an ambient working temperature of −40 °C to +55 °C.
Each type of hose for this application shall be divided into the following two categories:
a) category M: electrically bonded;
b) category Ω: electrically conductive.
Hoses for this application shall be divided into the following two temperature classes:
a) normal temperature class with an ambient working temperature of −30 °C to +55 °C;
b) low temperature class (LT) with an ambient working temperature of −40 °C to +55 °C.
5 Materials and construction
The hose shall consist of the following:
— smooth, fuel resistant lining of rubber or thermoplastic elastomer (TPE);
— suitable reinforcement; related to type;
— non-corrugated, fuel and weather-resistant rubber or TPE cover.
Hose assemblies shall be capable of conducting an electrical charge from coupling to coupling.
When this capability is provided by means of metallic bonding wires, not less than two (metallic)
bonding wires shall be embedded in the hose and the metal used shall have a high resistance to fatigue
and corrosion.
Hoses with metallic wires for electrical conductivity shall be designated “M” and those using conductive
compounds shall be designated “Ω”, the relevant mark being branded on the hose (see Clause 12).
6 Pressure requirements
For all types of hoses, the following shall apply:
a) maximum working pressure: 16 bar (1,6 MPa);
b) proof pressure: 24 bar (2,4 MPa);
c) minimum bursting pressure: 48 bar (4,8 MPa).
2 © ISO 2015 – All rights reserved
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ISO 5772:2015(E)
7 Dimensions and tolerances
7.1 Internal diameters and bend radii
When measured in accordance with ISO 4671, the internal diameter of the hose shall comply with the
values given in Table 1.
When measured in accordance with ISO 10619–1, the minimum bend radii for each diameter of hose
shall comply with the values given in Table 1.
Table 1 — Nominal bore, internal diameter, tolerance, and bend radii
Internal diameter Tolerance Bend radius
Nominal bore
mm mm mm
12 12 60
16 16 ±0,8 80
19 19 100
21 21,0 130
25 25,0 150
32 32,0 175
35 35,0 ±1,25 200
38 38,0 225
40 40,0 225
50 50,0 275
7.2 Minimum thickness of lining and cover
When measured in accordance with ISO 4671, the thickness of the lining shall not be less than 1,6 mm.
The thickness of the cover shall not be less than 1,0 mm.
7.3 Concentricity
When determined in accordance with ISO 4671, the concentricity, based on a total indicator reading
between the internal diameter and the outside surface of the cover, shall not exceed 1,0 mm.
7.4 Tolerance on cut lengths
For cut lengths, the tolerances on length shall be according to ISO 1307. The length of a hose assembly
shall be measured from sealing face to sealing face of the end fittings with a tolerance from the nominal
length of ±1 %.
8 Physical properties
8.1 Compounds
When tested in accordance with the methods in Table 2, the physical properties of the compounds used
for the lining and cover shall comply with the values given in Table 2. Tests shall be carried out either on
samples taken from the hose or from moulded vulcanised sheets at a thickness of 2 mm or moulded test
pieces, vulcanised to the same cured state as the production hoses.
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ISO 5772:2015(E)
Table 2 — Physical properties of compounds
Requirement
a
Property Unit Test piece Test method
Rubber TPE
Tensile strength
MPa 9 12
Lining and cover, min.
ISO 37
Elongation at break
% 250 350
Lining and cover, min.
Accelerated ageing
— Tensile strength change,
% 20 10
max.
ISO 188
Lining and cover
(air oven method)
14 days at (70 ± 1) °C
— Elongation at break
change, max.
% −35 −20
Lining and cover
Resistance to liquids ISO 1817
70 h at 40 °C in
Test piece cut from
+70 oxygenated fuel
hose or from test
type 3
sheet
Lining swell max.
ISO 1817
+25
70 h at 100 °C in oil
No 3
Lining extracted matter
%
ISO 1817
+10
Normal temperature class
70 h at 40 °C in
max.
oxygenated fuel
Lining extracted matter
type 3 then dry 24 h
+15
at 100 °C
Low temperature class max.
ISO 1817
Cover swell max. +100
70 h at 23 °C in
Liquid B
Low temperature resistance
No cracks under ×10
to lining and cover at −30 °C — Annex A
magnification
(or −40 °C if required)
Test piece from
Abrasion resistance ISO 4649
3
mm 500 moulded test sheet
Cover compound max. Method A
of cover compound
a
It is necessary that the test report indicated the source of the test piece.
8.2 Finished hose
When tested in accordance with the methods in Table 3, the physical properties of the finished hose
shall comply with the values given in Table 3.
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ISO 5772:2015(E)
Table 3 — Physical properties of hoses
Property Unit Requirement Test piece Test method
No leakage or
ISO 1402
other signs of
Proof pressure at 24 bar — Full length of hose
weakness nor
Proof test pressure
abrupt twisting
ISO 1402
Short length cut from
Burst pressure, min. bar 48
hose
Burst pressure
Volumetric expansion, max. 2
ISO 6801
At least 1 m cut from
— Type 1 and Type 2 %
hose
1 Test pressure 3 bar
— Type 3
Adhesion between components 2,4
on
N/mm ISO 8033/Annex B
— Un-aged hose, min.
1,8
— Aged hose, min.
T ≥ 0,8 D
Short length cut from
D hose
ISO 10619–1
No kinking or
Ambient temperature bending — Nominal diameter
deformation
greater than 20 % C = 10 × nominal bore
of the outside
diameter
No cracks or
Annex C, Reference
breaks
Low temperature flexibility hose with nominal Annex C
Maximum bend-
bore 16, 19 or 21
ing force 180 N
Change in length at proof
% 0 to +5 Full length of hose ISO 1402
pressure
ISO 7326 168 h at
No cracks under Short length cut from 40 °C, 50 pphm, relative
Ozone resistance of cover —
×2 magnification hose humidity (55 ± 10) %
and elongation 20 %
2 m test piece cut
Fuel permeation of hose max.
ml/ 12 from hose Reference
Annex D
Normal temperature class
(m⋅day) 18 hose with nominal
Low temperature class
bore 16, 19 or 21
Electrical resistance max.
ISO 8031:2009, Method
Equivalent to the
6
1 × 10
4.5, 4.6, or 4.7
Ω length of hose
Category Ω
assembly
2
Category M 1 × 10 ISO 8031:2009
a) Burning with
a naked flame to
cease within 20 s
of removal of the
burner;
b) no further Length of assembly to
Flammability — Annex E
glowing suit test rig
visible 2 min after
removal of t
...
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