SIST EN 13565-1:2019
(Main)Fixed firefighting systems - Foam systems - Part 1: Requirements and test methods for components
Fixed firefighting systems - Foam systems - Part 1: Requirements and test methods for components
This European Standard specifies requirements for materials, construction, and performance of components intended for use in fixed foam fire fighting systems, and using foam concentrates conforming to EN 1568-1 to EN 1568-4. The components covered are: proportioners, sprayers, semi-subsurface hose units, branchpipes, low/medium expansion foam generators, high expansion foam generators, foam chambers, tanks and pressure vessels. Methods of test are given in Annexes A to K.
Requirements are also given for the provision of the characteristic data needed for correct application of components.
NOTE Unless otherwise stated pressures are gauge pressures expressed in bar.
The requirements of this specification do not cover, except where stated, the use of combinations of components to form part, or the whole, of a fire fighting system.
It should not be assumed that components conforming to this specification are necessarily compatible one with another.
Requirements for pumps, motors and the functioning of mechanical components (i.e. remote control turrets) are outside the scope of this standard.
Ortsfeste Brandbekämpfungsanlagen - Schaumlöschanlagen - Teil 1: Anforderungen und Prüfverfahren für Bauteile
Diese Europäische Norm legt Anforderungen für die Werkstoffe, die Konstruktion und die Leistungsmerkmale von Bauteilen fest, die in ortsfesten Schaumlöschanlagen bei Verwendung von Schaummitteln nach EN 1568-1 bis EN 1568-4 eingesetzt werden. Die behandelten Bauteile sind: Zumischeinrichtungen, Schaumdüsen, Semi-Subsurface-Schlaucheinheiten, Schaumrohre, Schwer- und Mittelschaumerzeuger, Leichtschaumerzeuger, Schaumtöpfe, Behälter und Druckbehälter. Die Prüfverfahren sind in den Anhängen A bis K aufgeführt.
Es werden auch Anforderungen für die Bestimmung der charakteristischen Angaben beschrieben, die für die korrekte Anwendung der Bauteile erforderlich sind.
ANMERKUNG Wenn nicht anders angegeben, sind die Drücke Überdrücke in bar.
Die Anforderungen dieser Norm behandeln nicht die Verwendung kombinierter Bauteile, die zur Bildung von Teilen einer Löschanlage oder einer gesamten Löschanlage benötigt werden, es sei denn, es ist ausdrücklich angegeben.
Es sollte nicht angenommen werden, dass Bauteile, die diesen Festlegungen entsprechen, zwangsläufig miteinander kompatibel sind.
Die Anforderungen an Pumpen, Motoren und die Funktion der mechanischen Bauteile (d. h. ferngesteuerte Drehgestelle) sind nicht in dieser Norm festgelegt.
Installations fixes de lutte contre l'incendie - Systèmes à émulseurs - Partie 1 : Exigences et méthodes d'essais relatives aux composants
La présente Norme européenne spécifie les exigences relatives aux matériaux, à la fabrication et aux performances des composants destinés à être utilisés dans les installations fixes à mousse de lutte contre l’incendie et employant des émulseurs conformes aux EN 1568-1 à EN 1568-4. Les composants concernés sont les suivants : proportionneurs, pulvérisateurs, tuyaux semi-immergés, lances à mousse, générateurs de mousse bas et moyen foisonnement, générateurs de mousse haut foisonnement, chambres à mousse, réservoirs et récipients sous pression. Les méthodes d’essai sont décrites dans les Annexes A à K.
Elle prescrit également des exigences relatives à l’indication des caractéristiques nécessaires pour une utilisation correcte des composants.
NOTE Sauf indication contraire, les pressions sont des pressions relatives, exprimées en bar.
Les exigences de la présente spécification ne concernent pas, sauf si cela est précisé, l’utilisation de combinaisons de composants pour constituer tout ou partie d’une installation de lutte contre l’incendie.
Il convient de ne pas considérer que les composants conformes à la présente spécification sont nécessairement compatibles entre eux.
Les exigences relatives aux pompes, moteurs et au fonctionnement des composants mécaniques (par exemple, les tourelles télécommandées) ne relèvent pas du domaine d'application de la présente norme.
Vgrajeni gasilni sistemi - Sistemi za gašenje s peno - 1. del: Zahteve in preskusne metode za sestavne dele
Ta evropski standard določa zahteve za materiale, konstrukcijo in lastnosti sestavnih delov, namenjenih za uporabo v vgrajenih gasilnih sistemih za gašenje s peno in uporabo penil v skladu s standardi EN 1568-1 do EN 1568-4. Zajeti sestavni deli so: naprave za odmerjanje, sistemi s pršečo vodo, polpodpovršinske cevne enote, generatorji pene z nizko/srednjo ekspanzijo, generatorji pene z veliko ekspanzijo, komore s peno, rezervoarji in tlačne posode. Preskusne metode so navedene v dodatkih A do K.
Podane so tudi zahteve za določila značilnih podatkov, ki so potrebni za pravilno uporabo sestavnih delov.
OPOMBA: Tlaki so tlaki merilnika v barih, če ni navedeno drugače.
Zahteve te specifikacije ne zajemajo, razen če je navedeno drugače, uporabe kombinacij sestavnih delov, ki tvorijo del ali celoten gasilni sistem.
Sestavni deli, ki so skladni s temi specifikacijami, niso nujno medsebojno združljivi.
Zahteve za črpalke, motorje in delovanje mehanskih sestavnih delov (npr. daljinsko vodene naprave za gašenje) niso predmet tega standarda.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 13565-1:2019
01-julij-2019
Nadomešča:
SIST EN 13565-1:2004+A1:2007
Vgrajeni gasilni sistemi - Sistemi za gašenje s peno - 1. del: Zahteve in preskusne
metode za sestavne dele
Fixed firefighting systems - Foam systems - Part 1: Requirements and test methods for
components
Ortsfeste Brandbekämpfungsanlagen - Schaumlöschanlagen - Teil 1: Anforderungen
und Prüfverfahren für Bauteile
Installations fixes de lutte contre l'incendie - Systèmes à émulseurs - Partie 1 :
Exigences et méthodes d'essais relatives aux composants
Ta slovenski standard je istoveten z: EN 13565-1:2019
ICS:
13.220.10 Gašenje požara Fire-fighting
SIST EN 13565-1:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 13565-1:2019
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SIST EN 13565-1:2019
EN 13565-1
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2019
EUROPÄISCHE NORM
ICS 13.220.20 Supersedes EN 13565-1:2003+A1:2007
English Version
Fixed firefighting systems - Foam systems - Part 1:
Requirements and test methods for components
Installations fixes de lutte contre l'incendie - Systèmes Ortsfeste Brandbekämpfungsanlagen -
à émulseurs - Partie 1 : Exigences et méthodes d'essais Schaumlöschanlagen - Teil 1: Anforderungen und
relatives aux composants Prüfverfahren für Bauteile
This European Standard was approved by CEN on 8 February 2019.
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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13565-1:2019 E
worldwide for CEN national Members.
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SIST EN 13565-1:2019
EN 13565-1:2019 (E)
Contents Page
European foreword . 5
1 Scope. 7
2 Normative references . 7
3 Terms and definitions . 8
4 General construction requirements . 11
4.1 Connections . 11
4.2 Parts intended for removal during routine field maintenance . 11
4.3 Hydrostatic strength . 12
4.4 Castings . 12
4.5 Corrosion resistance of metal parts . 12
4.6 Elastomers . 13
4.7 Plastics and reinforced resin materials . 13
4.8 Heat and fire resistance . 14
4.9 Components for low expansion foam systems . 14
4.10 Components for medium and high expansion foam systems . 15
4.11 Tanks and pressure vessels for foam concentrates or solutions. 16
5 Performance Characteristics of Foam Components . 17
5.1 Discharge coefficients and characteristics of branchpipes, sprayers and low and
high back pressure foam generators . 17
5.2 Quality of foam from aspirating components . 17
5.3 Accuracy of proportioning components . 17
6 Documentation . 18
6.1 Preparation and maintenance . 18
6.2 Installation and user documentation . 18
6.3 Design documentation . 18
2
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EN 13565-1:2019 (E)
7 Marking . 18
8 Evaluation of conformity - Initial type testing . 19
8.1 Conformity . 19
8.2 Modification . 19
8.3 Prior testing . 19
8.4 Grouping . 19
8.5 Related components . 19
8.6 Normal production . 20
8.7 Reference samples . 20
8.8 Test sequence . 20
Annex A (normative) Hydrostatic test . 21
A.1 General . 21
A.2 Leak test . 21
A.3 Mechanical strength . 21
Annex B (normative) Ageing test for plastics, thermoplastics or thermosets; and reinforced
resin materials . 22
B.1 General . 22
B.2 Tensile strength and elongation test . 22
B.3 Impact test . 22
Annex C (normative) Liquid exposure test . 23
Annex D (normative) Heat and fire resistance test for foam generators . 24
Annex E (normative) Flow tests . 25
E.1 General . 25
E.2 Discharge coefficient . 25
E.3 Discharge characteristic . 25
Annex F (normative) Quality of foam from aspirating components . 26
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SIST EN 13565-1:2019
EN 13565-1:2019 (E)
F.1 General . 26
F.2 Low expansion foams . 26
F.3 Medium expansion foams . 26
Annex G (normative) High expansion foam generator test . 27
Annex H (normative) Range tests for branchpipes . 28
Annex I (normative) Area coverage test for foam sprayers and nozzles . 29
Annex J (normative) Maximum flow and back pressure. 31
J.1 General . 31
J.2 Flow . 31
J.3 Back pressure . 31
J.4 Vapour seals . 31
J.4.1 Vapour seal – upstream (foam inlet side) . 31
J.4.2 Vapour seal – downstream (tank side) . 32
Annex K (normative) Insertion and deployment of semi-subsurface hose . 33
Annex L (normative) Salt spray corrosion test . 34
Annex M (normative) Stress corrosion test . 35
Annex N (normative) Internal corrosion test . 36
4
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SIST EN 13565-1:2019
EN 13565-1:2019 (E)
European foreword
This document (EN 13565-1:2019) has been prepared by Technical Committee CEN/TC 191, “Fixed
firefighting systems” 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 2019, and conflicting national
standards shall be withdrawn at the latest by November 2019.
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 will supersede EN 13565-1:2003+A1:2007.
Compared to the previous edition, the following changes have been made:
1) the foreword has been updated;
2) normative references have been updated;
3) 4.1 revised;
4) 4.4 revised;
5) 4.5 revised;
6) 4.6 revised;
7) 4.9 replaces Clause 8;
8) 4.10 replaces Clause 9;
9) 4.11 replaces Clause 10;
10) Clause 5 changed to ‘performance characteristics of foam components’;
11) Clause 6, new clause ‘documentation’;
12) Clause 7 replaces Clause 11;
13) Clause 8 replaces Clause 12;
14) Annex A revised;
15) Annex E requirements clause reference added;
16) Annex F requirements clause reference added.
17) Annex G revised;
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SIST EN 13565-1:2019
EN 13565-1:2019 (E)
18) Annex H revised;
19) Annex I revised;
20) Annex J revised;
21) Annexes K, L, M, N added.
EN 13565, Fixed firefighting systems — Foam systems, is currently composed with the following
parts:
— Part 1: Requirements and test methods for components;
— Part 2: Design, construction and maintenance.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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.
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SIST EN 13565-1:2019
EN 13565-1:2019 (E)
1 Scope
The requirements of this document set out the materials, construction, and performance of
components intended for use in fixed foam fire fighting systems, and using foam concentrates
conforming to EN 1568-1 to EN 1568-4. The components covered are: proportioners, sprayers,
semi-subsurface hose units, branchpipes, low/medium expansion foam generators, high expansion
foam generators, foam chambers, tanks and pressure vessels. Methods of test are given in Annex A
to Annex K.
Requirements are also given for the provision of the characteristic data needed for correct
application of components.
NOTE 1 Unless otherwise stated pressures are gauge pressures expressed in bar.
The requirements of this document do not cover, except where stated, the use of combinations of
components to form part, or the whole, of a fire fighting system.
NOTE 2 Components conforming to this document are not necessarily compatible one with another.
Requirements for pumps, motors and the functioning of mechanical components (i.e. remote
control turrets) are outside the scope of this document.
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.
EN 1568-1:2018, Fire extinguishing media — Foam concentrates — Part 1: Specification for medium
expansion foam concentrates for surface application to water-immiscible liquids
EN 1568-2:2018, Fire extinguishing media — Foam concentrates — Part 2: Specification for high
expansion foam concentrates for surface application to water-immiscible liquids
EN 1568-3:2018, Fire extinguishing media — Foam concentrates — Part 3 Specification for low
expansion foam concentrates for surface application to water-immiscible liquids
EN 1568-4:2018, Fire extinguishing media — Foam concentrates — Part 4: Specification for low
expansion foam concentrates for surface application to water-miscible liquids
EN 12259-1:1999+A1:2001, Fixed fire fighting systems — Components for sprinkler and water spray
systems — Part 1: Sprinklers
EN 1092-1, Flanges and their joints — Circular flanges for pipes, valves, fittings and accessories, PN
designated — Part 1: Steel flanges
EN 12542, LPG equipment and accessories — Static welded steel cylindrical tanks, serially produced
3
for the storage of Liquefied Petroleum Gas (LPG) having a volume not greater than 13 m — Design
and manufacture
7
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SIST EN 13565-1:2019
EN 13565-1:2019 (E)
EN ISO 225, Fasteners — Bolts, screws, studs and nuts — Symbols, designations and dimensions (ISO
225)
EN ISO 175, Plastics — Methods of test for the determination of the effects of immersion in liquid
chemicals (ISO 175)
EN ISO 179-1, Plastics — Determination of Charpy impact properties — Part 1: Non-instrumented
impact test (ISO 179-1)
EN ISO 180, Plastics — Determination of Izod impact strength (ISO 180)
EN ISO 527-1, Plastics — Determination of tensile properties — Part 1: General principles (ISO 527-1)
EN ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 1: Bolts,
screws and studs with specified property classes — Coarse thread and fine pitch thread (ISO 898-1)
EN ISO 898-2, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2: Nuts
with specified property classes — Coarse thread and fine pitch thread (ISO 898-2)
ISO 7-1, Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions,
tolerances and designation
ISO 888, Fasteners — Bolts, screws and studs — Nominal lengths and thread lengths
ISO 4633, Rubber seals — Joint rings for water supply, drainage and sewerage pipelines —
Specification for materials
ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests
Nordtest method NT Fire 042 Foam Concentrate Proportioner Performance Test
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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 http://www.iso.org/obp
3.1
component
item or piece of equipment intended for use in a fixed foam fire extinguishing system
3.2
aspirating component
component within which air and foam solution are mixed to make foam
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EN 13565-1:2019 (E)
3.3
non-aspirating component
components which discharge a spray of foam solution so that mixing with air and formation of foam
takes place outside the component
3.4
proportioning component
component which controls the mixing of foam concentrate into a water flow, at a predetermined
ratio, to produce a foam solution
Note 1 to entry: Proportioning components are variously described as inline, bypass and round the pump
inductors, injectors, eductors, proportioners, venturis, constant and variable flow valves, orifice plates, water
powered foam pumps and displacement proportioners.
3.5
single orifice component
component in which liquid flows through a single flow controlling orifice
3.6
multiple orifice component
component in which liquid flows simultaneously through more than one flow controlling orifice
3.7
branchpipe
component which projects foam in the form of a jet or spray
3.8
foam chamber
component that incorporates a vapour seal, a foam expansion chamber, and which delivers foam
into a flammable or combustible liquid storage tank
Note 1 to entry: A foam generator can be connected to the foam chamber inlet.
3.9
foam generator
component which introduces air into the foam solution stream for delivery against a low back
pressure, i.e. discharging against atmospheric pressure
3.10
high back pressure foam generator
component which introduces air into the foam solution stream for delivery against a high back
pressure, for example, as is found in tank sub-surface injection
3.11
monitor
component consisting of a branchpipe or jet/fog nozzle and turret
Note 1 to entry: This standard is considering the mechanical properties and foam discharge performance
only. Different types of operation (electrically, hydraulically, water motor oscillating) are not subject of this
standard.
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EN 13565-1:2019 (E)
3.12
foam pourer (foam discharge outlet)
component which discharges foam gently and indirectly onto the fuel surface
Note 1 to entry: Some pourers are designed to discharge the foam tangentially in order to create a circular
motion, and thus promote foam distribution.
3.13
semi-subsurface hose unit
component which delivers foam below the surface of a flammable liquid so that it rises to the liquid
surface within a flexible hose and spreads over the liquid surface
3.14
turret
device on which a foam branchpipe is mounted to allow rotation and elevation
Note 1 to entry: The requirements for the testing of turrets are outside the scope of this standard.
3.15
vapour seal
frangible component designed to prevent tank contents vapours entering the foam pipework
system while allowing foam to flow into the tank during system operation
3.16
sprayer
open nozzle which discharges a spray of foam or foam solution
Note 1 to entry: The terms sprayer and nozzle are regarded as interchangeable.
3.17
low expansion foam
foam which has an expansion ratio not greater than 20
[SOURCE: EN 1568-4:2018, 3.3]
3.18
medium expansion foam
foam which has an expansion ratio greater than 20 but not greater than 200
[SOURCE: EN 1568-4:2018, 3.4]
3.19
high expansion foam
foam which has an expansion ratio greater than 200
[SOURCE: EN 1568-4:2018, 3.5]
3.20
working pressure
pressure at which the component is used in the system
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EN 13565-1:2019 (E)
3.21
discharge characteristic
pressure vs. flow relationship for components
3.22
discharge coefficient (K factor)
K factor for the formula Q = K dP where Q is the flow rate through the component in l/min and
dP is the inlet pressure in bar
3.23
expansion ratio
ratio of the volume of foam to the volume of foam solution from which it is made
4 General construction requirements
4.1 Connections
4.1.1 Permanent connections and joints
Permanent joints on components for connection to pipework or other components shall conform to
ISO 7-1, or EN 1092-1. Other technical specifications valid in the place of use of the component may
be acceptable.
4.1.2 Bolting of pressure retaining parts
Bolts, nuts and/or studs used to fasten pressure retaining parts shall conform to EN ISO 898-1 and
EN ISO 898-2.
The calculated load on any bolt or stud excluding the force required to compress the gasket shall
not exceed the minimum tensile strength specified in EN 225, ISO 888 or EN ISO 898-1 when the
component is pressurized to four times the rated working pressure.
The area of the application of pressure shall be calculated using the following assumptions:
— If a full-face gasket is used, the assumed area of pressure application extends out to the centre
line of the bolts.
— If an 'O' ring seal or ring gasket is used, the assumed area of pressure application extends out to
the centre of the 'O' ring or gasket.
4.2 Parts intended for removal during routine field maintenance
4.2.1 Removal
Parts intended for removal during routine field maintenance shall be accessible, removable, and
replaceable without damage using appropriate tools normally used by the trade, or special tools
recommended by the component manufacturer.
4.2.2 Re-assembly
The design and construction of any part intended for removal during routine field maintenance
shall be such that it cannot be re-assembled so as to cause malfunction of the component, without
an external visible indication.
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EN 13565-1:2019 (E)
4.3 Hydrostatic strength
4.3.1 Leak test
The pressure retaining parts of components (including the connection joints), except atmospheric
storage tanks and pressure vessels, shall withstand for 10 min without leakage an internal
+1
hydrostatic pressure of 1,5 times the working pressure specified by the manufacturer bar, when
0
tested in accordance with Annex A.
4.3.2 Mechanical strength
The component housing shall withstand for 10 min without rupture a pressure of three times the
+1
design working pressure bar without rupture when tested in accordance with Annex A.
0
4.4 Castings
Castings shall not be plugged or filled.
Castings should be free from adhering sand and scale.
4.5 Corrosion resistance of metal parts
4.5.1 Salt spray corrosion resistance of metal parts
All mechanical components shall conform to the following after being tested in accordance with
Annex L:
a) shall function in accordance with the manufacturer’s performance parameters;
b) any corrosion resistant coating (such as paint) shall remain intact and shall adhere to the
surface so as not to be removable (when removal exposes a material subject to corrosion) by
such action as washing or rubbing with a fingernail;
c) dissimilar metals in contact or close proximity with one another shall show no signs of galvanic
corrosion;
d) the sample shall show no destruction of metal surfaces having no protective coating or paint.
Equipment constructed of metallic materials other than brass, bronze or ferrous metals shall
conform to the requirements specified in 4.5.1 except that the salt spray exposure shall be 720 hrs.
4.5.2 Copper alloy components stress corrosion test
If copper alloy components are used the components shall conform to the following after being
tested in accordance with Annex M:
a) shall function in accordance with the manufacturer’s performance parameters;
b) shall show no signs of cracking when examined under 25 × magnification;
c) comply with the hydrostatic strength test under 4.3.1.
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EN 13565-1:2019 (E)
For large non-moving parts and non-pressure components the test may be carried out using
representative material samples e.g. where the large component comprises a cast and machined
component the test piece shall be similarly cast and machined. Sub-assemblies of moving parts may
be tested.
4.5.3 Internal corrosion
Other than the exception below, those parts of components which are exposed to foam concentrate,
foam solution, other specific liquids, or to unusual atmospheric conditions shall be resistant to that
exposure when tested in accordance with Annex N.
The test may be carried out either using the complete component or a sub-assembly comprising the
complete water/foam passageways.
At the conclusion of the test, check that the mechanical operation of all working parts is unimpaired
and that there are no significant corrosion effects inside or outside. Significant corrosion defects are
pits, cracks and blisters.
The foam concentrate manufacturer should always be consulted on the suitability of containers and
their linings and external paint finish, valves, fittings and pipework, for long-term storage of
concentrate or solution.
This requirement does not apply to components that are exposed to the corrosive media (i.e. foam
concentrate or foam solution) during the limited period of foam discharge.
4.6 Elastomers
Elastomeric joint rings shall conform to the requirements of Type #W of ISO 4633. Manufacturer’s
shall provide evidence that any elastomers used are compatible with the media in which they are in
contact.
4.7 Plastics and reinforced resin materials
4.7.1 General
Plastics, thermoplastics or thermosets; or reinforced resin components, which are essential to the
operation or safety of the product, shall meet the relevant requirements of 4.7.2 and 4.7.3.
4.7.2 Resistance to ageing
After ageing in accordance with Annex B, specimens of plastics and reinforced resin materials
(other
...
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