ISO 4642-1:2009
(Main)Rubber and plastics hoses, non-collapsible, for fire-fighting service — Part 1: Semi-rigid hoses for fixed systems
Rubber and plastics hoses, non-collapsible, for fire-fighting service — Part 1: Semi-rigid hoses for fixed systems
ISO 4642-1:2009 specifies the requirements and test methods for semi-rigid reel hoses for fire-fighting purposes for use with fixed systems. The hoses are intended for use at a maximum working pressure of 1,2 MPa for hoses of 19 mm and 25 mm inside diameter and 0,7 MPa for hoses of 33 mm inside diameter. Hoses conforming to ISO 4642-1:2009 are intended for applications where long intervals can occur between the occasions of use, for example on fixed fire hose reels in buildings and other construction works. ISO 4642-1:2009 applies exclusively to hoses for fire-fighting purposes intended for use at ambient conditions in non-aggressive or non-corrosive atmospheres within the temperature range minus 20 °C to plus 60 °C.
Tuyaux en caoutchouc et en plastique, non aplatissables, pour la lutte contre l'incendie — Partie 1: Tuyaux semi-rigides pour systèmes fixes
General Information
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 4642-1
First edition
2009-02-15
Rubber and plastics hoses,
non-collapsible, for fire-fighting
service —
Part 1:
Semi-rigid hoses for fixed systems
Tuyaux en caoutchouc et en plastique, non aplatissables, pour la lutte
contre l'incendie —
Partie 1: Tuyaux semi-rigides pour systèmes fixes
Reference number
ISO 4642-1:2009(E)
©
ISO 2009
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ISO 4642-1:2009(E)
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ii © ISO 2009 – All rights reserved
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ISO 4642-1:2009(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 Classification. 2
4.1 General. 2
4.2 Classification by types (hose construction) . 2
4.3 Classification by class (materials for lining and cover) . 2
5 Dimensions, tolerances and maximum mass. 3
5.1 Inside diameter and maximum mass. 3
5.2 Length and tolerances on length . 3
6 Performance requirements of finished hose . 3
6.1 Hydrostatic requirements . 3
6.2 Adhesion. 4
6.3 Accelerated ageing. 4
6.4 Low temperature flexibility . 4
6.5 Hot surface resistance . 4
6.6 Ozone resistance . 4
6.7 Bending and crush resistance . 5
6.8 UV resistance (xenon arc lamp) . 5
6.9 Loss in mass on heating. 5
7 Frequency of testing. 5
8 Type tests . 5
9 Test report . 5
10 Recommendation for packaging and storage . 5
11 Marking . 5
Annex A (normative) Kink pressure test. 7
Annex B (normative) Accelerated ageing test . 8
Annex C (normative) Hot surface resistance test. 9
Annex D (normative) Bending and crush resistance test . 14
Annex E (normative) Type test and routine test . 16
Annex F (informative) Production test . 17
Bibliography . 18
© ISO 2009 – All rights reserved iii
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ISO 4642-1:2009(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 4642-1 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee
SC 1, Hoses (rubber and plastics).
This first edition, together with ISO 4642-2, cancels and replaces ISO 4642:1978 which has been technically
revised.
ISO 4642 consists of the following parts, under the general title Rubber and plastics hoses, non-collapsible,
for fire-fighting service:
⎯ Part 1: Semi-rigid hoses for fixed systems
⎯ Part 2: Semi-rigid hoses (and hose assemblies) for pumps and vehicles
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ISO 4642-1:2009(E)
Introduction
A fixed system is a manually operated unit installed in a building in order to make it possible for the occupants
to control and extinguish a small fire. The system consists of fixed units mounted on walls or in cabinets
permanently connected to a water supply. The fixed units are composed of a coupling, a valve, a semi-rigid
water-filled hose with its support and a nozzle.
© ISO 2009 – All rights reserved v
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INTERNATIONAL STANDARD ISO 4642-1:2009(E)
Rubber and plastics hoses, non-collapsible, for fire-fighting
service —
Part 1:
Semi-rigid hoses for fixed systems
1 Scope
This part of ISO 4642 specifies the requirements and test methods for semi-rigid reel hoses for fire-fighting
purposes for use with fixed systems. The hoses are intended for use at a maximum working pressure of
1,2 MPa for hoses of 19 mm and 25 mm inside diameter and 0,7 MPa for hoses of 33 mm inside diameter.
Hoses conforming to this part of ISO 4642 are intended for applications where long intervals can occur
between the occasions of use, for example on fixed fire hose reels in buildings and other construction works.
This part of ISO 4642 applies exclusively to hoses for fire-fighting purposes intended for use at ambient
conditions in non-aggressive or non-corrosive atmospheres within the temperature range −20 °C to +60 °C.
NOTE 1 Hoses for use at temperatures lower than −20 °C can be supplied at the request of the purchaser.
NOTE 2 All pressures are expressed in megapascals where 1 MPa = 10 bar.
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 176:2005, Plastics — Determination of loss of plasticizers — Activated carbon method
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 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of the dimensions of
hoses and the lengths of hose assemblies
ISO 4672:1997, Rubber and plastics hoses — Sub-ambient temperature flexibility tests
ISO 7326:2006, Rubber and plastics hoses — Assessment of ozone resistance under static conditions
ISO 8033, Rubber and plastics hose — Determination of adhesion between components
ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary
ISO 8331, Rubber and plastics hoses and hose assemblies — Guidelines for selection, storage, use and
maintenance
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ISO 4642-1:2009(E)
3 Terms and definitions
For the purposes of this document, the definitions given in ISO 8330 and the following apply.
3.1
semi-rigid hose
hose that maintains its round cross-section even when unpressurized
4 Classification
4.1 General
All types and classes of hose shall be so flexible that they can be rolled and kept on a drum of minimum
diameter 200 mm for 19 mm inside diameter and 25 mm inside diameter hose and of minimum diameter
280 mm for 33 mm inside diameter hose.
Hoses shall be one of two types distinguished by their construction. Each hose type shall be further divided
into classes distinguished by the materials used for lining and cover.
4.2 Classification by types (hose construction)
4.2.1 Type A hoses shall consist of:
a) a seamless rubber or plastics lining;
b) a textile reinforcement with or without a rigid spiral helix;
c) a rubber or plastics cover.
4.2.2 Type B hoses shall consist of:
a) a seamless rubber or plastics lining;
b) a circular woven textile reinforcement with a rigid spiral helix;
c) an uncovered or rubber or plastics cover.
4.3 Classification by class (materials for lining and cover)
The hose types shall be further subdivided into six classes dependent on the materials used in their
construction, in accordance with Table 1.
Table 1 — Classes and materials
Class Lining material Cover material
1 rubber rubber
2 plastics plastics
3 rubber plastics
4 plastics rubber
5 rubber no cover
6 plastics no cover
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ISO 4642-1:2009(E)
5 Dimensions, tolerances and maximum mass
5.1 Inside diameter and maximum mass
The inside diameter of the hose, when measured in accordance with ISO 4671, shall conform to the
requirements given in Table 2. The mass per metre length of the hose shall be in accordance with Table 2.
Table 2 — Inside diameter, tolerances on inside diameter and maximum mass per unit length
Inside diameter Tolerances for inside diameter Mass per unit length
mm mm kg/m
Type A Type B
max. max.
19 −0,5 to +1,0 0,75 0,25
25 ± 1,0 0,90 0,35
33 −1,0 to +1,5 1,00 0,50
5.2 Length and tolerances on length
The total length of hose supplied shall be in accordance with the purchaser’s requirements and shall be stated
in metres. Tolerance on length shall be in accordance with ISO 1307.
6 Performance requirements of finished hose
6.1 Hydrostatic requirements
6.1.1 Deformation under maximum working pressure
The dimensional stability of the hose, when tested in accordance with ISO 1402, shall conform to the
requirements given in Table 3. The length of the test piece shall be 1 m.
For 19 mm and 25 mm inside diameter hoses, the initial test pressure shall be 0,07 MPa and the final test
pressure shall be 1,2 MPa. For 33 mm inside diameter hose, the initial test pressure shall be 0,07 MPa and
the final test pressure shall be 0,7 MPa.
–1 –1
The twist shall be no greater than 30° m for type A. For type B, the twist may be greater than 30° m but in
this case it shall only be in a direction which closes the coupling and shall be stated in the test report.
Table 3 — Change in length and external diameter
Tolerances for type A Tolerances for type B
% %
Change in length 0 to +7,5 0 to +5,0
Change in external diameter 0 to +7,5 0 to +5,0
6.1.2 Deformation under proof pressure
A proof pressure hold test shall be carried out on three hose lengths each of 1 m in accordance with ISO 1402.
The proof pressure shall be as given in Table 4 and, on examination during the test, the test pieces shall not
show any evidence of leakage, cracking, abrupt distortion or other signs of failure.
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ISO 4642-1:2009(E)
Table 4 — Maximum working pressure, proof pressure and minimum burst pressure
Maximum working Minimum burst
Proof pressure
pressure pressure
Inside diameter
MPa MPa MPa
19 mm and 25 mm 1,2 2,4 4,2
...
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