SIST EN ISO 14557:2021

SLOVENSKI STANDARD
01-september-2021
Nadomešča:
SIST EN ISO 14557:2003
SIST EN ISO 14557:2003/A1:2008
Gasilske cevi - Gumene in polimerne sesalne cevi in cevni priključki (ISO
14557:2021)
Fire-fighting hoses - Rubber and plastics suction hoses and hose assemblies (ISO
14557:2021)
Feuerlöschschläuche - Saugschläuche aus Gummi und Kunststoff (ISO 14557:2021)
Tuyaux de lutte contre l'incendie - Tuyaux d'aspiration et flexibles en caoutchouc et en
plastique (ISO 14557:2021)
Ta slovenski standard je istoveten z: EN ISO 14557:2021
ICS:
13.220.10 Gašenje požara Fire-fighting
23.040.70 Gumene cevi in armature Hoses and hose assemblies
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 14557
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2021
EUROPÄISCHE NORM
ICS 13.220.10; 83.140.40 Supersedes EN ISO 14557:2002
English Version
Fire-fighting hoses - Rubber and plastics suction hoses and
hose assemblies (ISO 14557:2021)
Tuyaux de lutte contre l'incendie - Tuyaux d'aspiration Feuerlöschschläuche - Saugschläuche aus Gummi und
et flexibles en caoutchouc et en plastique (ISO Kunststoff (ISO 14557:2021)
14557:2021)
This European Standard was approved by CEN on 4 April 2021.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, 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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 14557:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 14557:2021) has been prepared by Technical Committee ISO/TC 45 "Rubber
and rubber products" in collaboration with Technical Committee CEN/TC 192 “Fire and Rescue Service
Equipment” 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 November 2021, and conflicting national standards
shall be withdrawn at the latest by November 2021.
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 14557:2002.
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, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 14557:2021 has been approved by CEN as EN ISO 14557:2021 without any modification.

INTERNATIONAL ISO
STANDARD 14557
Second edition
2021-04
Fire-fighting hoses — Rubber and
plastics suction hoses and hose
assemblies
Tuyaux de lutte contre l'incendie — Tuyaux d'aspiration et flexibles
en caoutchouc et en plastique
Reference number
ISO 14557:2021(E)
©
ISO 2021
ISO 14557:2021(E)
© ISO 2021
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
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

ISO 14557:2021(E)
Contents Page
Foreword .iv
1 Scope .1
2 Normative references .1
3 Terms and definitions .1
4 Classification . 2
4.1 Type (hose construction) . 2
4.2 Hose ends . . 2
5 Dimensions, tolerances and maximum mass . 2
5.1 Inside diameter and maximum mass. 2
5.2 Length and tolerance on length . 3
6 Performance requirements of finished hose or hose assembly .3
6.1 Visual examination . 3
6.2 Hydrostatic requirements . 3
6.2.1 Deformation under proof pressure . 3
6.2.2 Burst pressure . 4
6.3 Adhesion (type A hoses only) . 4
6.4 Low temperature flexibility . 4
6.5 Ozone resistance (type A hoses only) . 4
6.6 Bending resistance at ambient temperature . 4
6.7 UV resistance (type B hoses only) . 4
6.8 Loss in mass on heating (type B hoses only) . 4
6.9 Vacuum resistance . 4
6.10 Pressure impulse resistance (type B hoses only) . 5
6.11 Reinforcement fracture resistance (type B hoses only) . 5
6.12 Flexibility at ambient temperature . 5
6.13 Vacuum resistance with flexing . 5
7 Frequency of testing .5
8 Marking .6
8.1 Hose marking . 6
8.2 Hose assembly marking . 6
Annex A (normative) Test frequency for type tests and routine tests .7
Annex B (informative) Production acceptance tests .8
Annex C (normative) Pressure impulse test .9
Annex D (normative) Reinforcement fracture resistance test (type B hoses only) .12
Annex E (normative) Test for flexibility at ambient temperature .14
Annex F (normative) Test for vacuum resistance with flexing .16
Annex G (normative) Proof pressure test for hose assemblies .17
Bibliography .18
ISO 14557:2021(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, in collaboration with the European
Committee for Standardization (CEN) Technical Committee CEN/TC 192, Fire and Rescue Service
Equipment, in accordance with the Agreement on technical cooperation between ISO and CEN (Vienna
Agreement).
This second edition cancels and replaces the first edition (ISO 14557:2002), which has been technically
revised. It also incorporates the Amendment ISO 14557:2002/Amd.1:2007.
The main changes compared to the previous edition are as follows:
— pressure units in bar were added throughout the document, as needed;
— Clause 2 (Normative references) was updated;
— UV resistance requirement was added in 6.7;
— Clause 7 on frequency of testing was added and all subsequent clauses were renumbered;
— Annexes A and B were added and all subsequent annexes were renumbered.
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 2021 – All rights reserved

INTERNATIONAL STANDARD ISO 14557:2021(E)
Fire-fighting hoses — Rubber and plastics suction hoses
and hose assemblies
1 Scope
This document establishes the requirements and test methods for rubber and plastics suction hoses
for fire-fighting purposes. These hoses can also be used manually to supply unpressurized water to the
pump or for water discharge.
NOTE All pressures are expressed in megapascals and in bar (1 MPa = 10 bar).
Additional requirements are specified for hose assemblies, that is, hoses with couplings already fitted,
where this is carried out by the hose manufacturer (see Clause 8).
Type A (rubber) hoses are intended for use at a minimum temperature of −20 °C and Type B
(thermoplastics) hoses are intended for use at a minimum temperature of −10 °C.
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 176:2005, Plastics — Determination of loss of plasticizers — Activated carbon method
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 7233, 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 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 10619-2:2017, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness —
Part 2: Bending tests at sub-ambient temperatures
ISO 30013:2011, Rubber and plastics hoses — Methods of exposure to laboratory light sources —
Determination of changes in colour, appearance and other physical properties
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 8330 apply.
ISO 14557:2021(E)
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
4.1 Type (hose construction)
Type A hoses shall consist of:
a) a rubber lining uniform in thickness, reasonably concentric and free from holes, porosity and other
defects;
b) a textile reinforcement applied uniformly by any suitable method;
c) an embedded wire helix or helices evenly and uniformly applied and made from metallic material
that allows the hose to meet the specification requirements;
d) a rubber cover, ozone resistant, uniform in quality and thickness and free from defects.
Type B hoses shall consist of a flexible, thermoplastics material supported in its mass by a helix of rigid
polymeric material. The reinforcement and flexible components of the hose wall shall be fixed and free
from cracks, porosity, foreign inclusions or other defects.
4.2 Hose ends
The hose ends shall be compatible with suction hose couplings conforming to the relevant national
standards.
Where soft ends or wire-free ends are used for type A hoses, they should have an additional rubberized
textile reinforcement applied as a cuff over the wire-free portion and the first turn of the embedded
wire helix.
The hose ends should be capped or sealed to prevent ingress of water.
Specifying the dimensions of the soft or wire-free ends may be the subject of an agreement between the
manufacturer and the purchaser.
5 Dimensions, tolerances and maximum mass
5.1 Inside diameter and maximum mass
The dimensions of the hose and tolerances, when measured in accordance with ISO 4671, shall conform
to the requirements given in Table 1. The mass per metre of length of the hose shall be in accordance
with Table 1.
Table 1 — Inside diameter, tolerances on inside diameter and maximum mass per unit length
Inside diameter Tolerances for inside Maximum mass per unit length
mm diameter kg/m
Type A Type B
mm
45 −0,2 to +1
...