Rubber and thermoplastics hoses and hose assemblies for liquid or gaseous chemicals - Specification

This document specifies requirements for two types of hose assemblies (Types D and SD) and four grades based on electrical properties with hoses made of rubber or thermoplastics and hose fittings made of metal designed to convey liquid or gaseous chemical substances, hereinafter termed the “chemicals conveyed”.
The hose assemblies are intended for use with chemicals conveyed in the temperature range of –20 °C to +65 °C at a working pressure ≤ 10 bar1).
NOTE 1 This document sets out requirements for these hose assemblies to ensure that users are not exposed to danger from fire or explosion and that the environment is protected against contamination or damage.
NOTE 2 Other temperatures and working pressures than those given above can be agreed with the manufacturer, provided that the marking on the hose (see 14.1) states this and the requirements of Table 5 and all the other requirements are met.
NOTE 3 Other diameters than those given in this document can be agreed with the manufacturer.
NOTE 4 This document also provides guidance on the storage of hose assemblies (Clause 15).
NOTE 5 The attention of users is drawn to Annex F concerning the selection of lining material related to the chemical(s) to be conveyed by the hoses and/or hose assemblies.
This document does not apply to hose assemblies for:
— aircraft refuelling (EN ISO 1825);
— fuel dispensing (EN 1360);
— oil burners (EN ISO 6806);
— refrigerant circuits;
— fuel truck delivery (EN 1761);
— liquid petroleum gases (LPG) (EN 1762, EN 16436-2);
— fire-fighting (EN ISO 14557);
— oil suction and discharge (EN 1765);
— rotary drilling (EN ISO 6807);
— fuel dispensing with vapour recovery systems (EN 13483);
— anhydrous ammonia (EN ISO 5771).
This document does not apply to multilayer hose assemblies (EN 13765 and EN 13766).

Gummi- und Kunststoffschläuche und -schlauchleitungen für flüssige oder gasförmige Chemikalien - Anforderungen

Dieses Dokument legt Anforderungen fest für zwei Typen (Typ D und Typ SD) und, auf Grundlage ihrer elekrischen Eigenschaften, vier Klassen von Schlauchleitungen mit Schläuchen aus Gummi oder Thermoplasten und Schlaucharmaturen aus Metall zum Fördern von flüssigen oder gasförmigen Stoffen; diese werden im Folgenden „geförderte Chemikalien“ genannt.
Die Schlauchleitungen sind für den Einsatz mit den geförderten Chemikalien im Temperaturbereich von −20 °C bis +65 °C bei einem Betriebsdruck von ≤ 10 bar1) vorgesehen.
ANMERKUNG 1 Dieses Dokument legt Sicherheitsanforderungen für diese Schlauchleitungen fest, damit Anwender keinen Gefahren durch Brand oder Explosionen ausgesetzt werden und damit die Umwelt vor Verunreinigungen oder Schäden geschützt ist.
ANMERKUNG 2 Andere Temperaturen und Betriebsdrücke als die oben genannten können mit dem Hersteller vereinbart werden, vorausgesetzt, dass die Kennzeichnung auf dem Schlauch dies angibt (siehe 14.1) und die Anforderungen der Tabelle 5 sowie alle anderen Anforderungen eingehalten werden.
ANMERKUNG 3 Andere Durchmesser als die in diesem Dokument genannten können mit dem Hersteller vereinbart werden.
ANMERKUNG 4 Dieses Dokument gibt auch Hinweise für die Lagerung von Schlauchleitungen (siehe Abschnitt 15).
ANMERKUNG 5 Der Anwender wird auf Anhang F hingewiesen hinsichtlich der Auswahl des Werkstoffes für die Innenschicht, bezogen auf die mit dem Schlauch und/oder der Schlauchleitung zu fördernde(n) Chemikalie(n).
Dieses Dokument gilt nicht für Schlauchleitungen für:
— Flugzeugbetankung (EN ISO 1825);
— Kraftstoffabgabe (EN 1360);
— Ölbrenner (EN ISO 6806);
— Kältemittelkreisläufe;
— Tankwagen für Kraftstoffe (EN 1761);
— Flüssiggase (LPG) (EN 1762, EN 16436-2);
— Feuerwehren (EN ISO 14557);
— Ansaugen und Fördern von Öl (EN 1765);
— Rotary-Bohren (EN ISO 6807);
— Kraftstoffabgabe mit Gasrückführung (EN 13483);
— wasserfreies Ammoniak (EN ISO 5771).
Dieses Dokument gilt nicht für mehrlagige Schlauchleitungen (EN 13765 und EN 13766).

Tuyaux et assemblages flexibles en caoutchouc et en matériaux thermoplastiques pour substances chimiques liquides ou gazeuses - Spécifications

Le présent document spécifie les exigences relatives à deux types d’assemblages flexibles (Types D et SD)
et quatre classes basées sur les propriétés électriques, constitués de tuyaux en caoutchouc ou en
matériaux thermoplastiques et d'embouts métalliques conçus pour véhiculer des substances chimiques
liquides ou gazeuses, ci-après désignés "produits chimiques véhiculés".
Les assemblages flexibles sont destinés à être utilisés avec des produits chimiques véhiculés dans une
plage de température de –20 °C à +65 °C à une pression de service  10 bar1).
NOTE 1 Le présent document établit des exigences pour ces assemblages flexibles afin de s’assurer que les
utilisateurs ne sont pas exposés à des risques dus à un incendie ou à une explosion et que l’environnement est
protégé contre tout dommage ou pollution.
NOTE 2 D’autres températures et pressions de service que celles données ci-dessus peuvent faire l’objet d’un
accord avec le fabricant, à condition que le marquage apposé sur le tuyau (voir 14.1) fasse état de ces informations
et que les exigences du Tableau 5 et toutes les autres exigences soient atteintes.
NOTE 3 D’autres diamètres que ceux donnés dans le présent document peuvent faire l’objet d’un accord avec le
fabricant.
NOTE 4 Le présent document fournit également des indications concernant le stockage des assemblages flexibles
(Article 15).
NOTE 5 L’attention des utilisateurs est attirée sur l’Annexe F concernant le choix du matériau du tube intérieur
en fonction des produits chimiques que les tuyaux et/ou les assemblages flexibles doivent véhiculer.
Le présent document ne s’applique pas aux assemblages flexibles utilisés pour :
— le ravitaillement des avions (EN ISO 1825) ;
— la distribution de carburant (EN 1360) ;
— les brûleurs à huile (EN ISO 6806) ;
— les circuits réfrigérants ;
— la livraison de carburant par camion (EN 1761) ;
— le gaz de pétrole liquéfié (GPL) (EN 1762, EN 16436-2) ;
— la lutte contre les incendies (EN ISO 14557) ;
— le chargement et le déchargement de produits pétroliers (EN 1765) ;
— le forage rotatif (EN ISO 6807) ;
— distribution de carburants avec système de récupération de vapeur (EN 13483) ;
— ammoniac anhydre (EN ISO 5771).
Le présent document ne s'applique pas aux assemblages flexibles multicouches (EN 13765 et EN 13766).

Gumene in plastomerne cevi ter cevni priključki za tekoče in plinaste kemikalije - Specifikacija

General Information

Status
Published
Public Enquiry End Date
30-Nov-2019
Publication Date
31-Jan-2021
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
28-Jan-2021
Due Date
04-Apr-2021
Completion Date
01-Feb-2021

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SLOVENSKI STANDARD
SIST EN 12115:2021
01-marec-2021
Nadomešča:
SIST EN 12115:2011

Gumene in plastomerne cevi ter cevni priključki za tekoče in plinaste kemikalije -

Specifikacija

Rubber and thermoplastics hoses and hose assemblies for liquid or gaseous chemicals -

Specification

Gummi- und Kunststoffschläuche und -schlauchleitungen für flüssige oder gasförmige

Chemikalien - Anforderungen

Tuyaux et assemblages flexibles en caoutchouc et en matériaux thermoplastiques pour

substances chimiques liquides ou gazeuses - Spécifications
Ta slovenski standard je istoveten z: EN 12115:2021
ICS:
83.140.40 Gumene cevi Hoses
SIST EN 12115:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 12115:2021
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SIST EN 12115:2021
EN 12115
EUROPEAN STANDARD
NORME EUROPÉENNE
January 2021
EUROPÄISCHE NORM
ICS 23.040.70 Supersedes EN 12115:2011
English Version
Rubber and thermoplastics hoses and hose assemblies for
liquid or gaseous chemicals - Specification

Tuyaux et assemblages flexibles en caoutchouc et en Gummi- und Kunststoffschläuche und -

matériaux thermoplastiques pour substances schlauchleitungen für flüssige oder gasförmige

chimiques liquides ou gazeuses - Spécifications Chemikalien - Anforderungen
This European Standard was approved by CEN on 13 December 2020.

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 12115:2021 E

worldwide for CEN national Members.
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SIST EN 12115:2021
EN 12115:2021 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 5

1 Scope .................................................................................................................................................................... 6

2 Normative references .................................................................................................................................... 7

3 Terms and definitions ................................................................................................................................... 8

4 Classification ..................................................................................................................................................... 8

5 Couplings and end fittings ........................................................................................................................... 8

6 Materials and construction .......................................................................................................................... 8

6.1 General ................................................................................................................................................................ 8

6.2 Lining ................................................................................................................................................................... 8

6.3 Cover .................................................................................................................................................................... 9

6.4 Reinforcement .................................................................................................................................................. 9

6.5 Helical wires ...................................................................................................................................................... 9

7 Dimensions and tolerances, typical masses .......................................................................................... 9

7.1 Diameters, thickness, vacuum stability, bend radii and resistance to vacuum ........................ 9

7.2 Concentricity .................................................................................................................................................. 10

7.3 Length of hose assemblies ........................................................................................................................ 10

8 Physical properties of materials used for hoses ............................................................................... 10

8.1 General ............................................................................................................................................................. 10

8.2 Materials used for the lining .................................................................................................................... 11

8.3 Material of the helix .................................................................................................................................... 12

8.4 Materials of the end fittings and couplings ......................................................................................... 12

9 Performance requirements of hoses and hose assemblies ........................................................... 12

10 Electrical properties ................................................................................................................................... 13

11 Frequency of testing .................................................................................................................................... 14

12 Type tests ........................................................................................................................................................ 14

13 Test report ...................................................................................................................................................... 14

14 Marking ............................................................................................................................................................ 15

14.1 Hoses ................................................................................................................................................................. 15

14.2 Hose fittings ................................................................................................................................................... 15

14.3 Identification of hose assemblies ........................................................................................................... 15

15 Storage and admissible storage time .................................................................................................... 16

Annex A (normative) Test frequency for type tests and routine tests ................................................... 17

Annex B (informative) Production acceptance tests .................................................................................... 18

Annex C (informative) Couplings and fittings ................................................................................................. 19

Annex D (normative) Crush recovery test (for SD hoses only) ................................................................. 20

Annex E (normative) Flammability test ............................................................................................................ 22

Annex F (informative) Resistance to chemicals conveyed ......................................................................... 24

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SIST EN 12115:2021
EN 12115:2021 (E)

Annex G (informative) Environmental checklist ............................................................................................ 44

Bibliography ................................................................................................................................................................. 46

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SIST EN 12115:2021
EN 12115:2021 (E)
European foreword

This document (EN 12115:2021) has been prepared by Technical Committee CEN/TC 218 “Rubber and

plastics hoses and hose assemblies”, 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 July 2021, and conflicting national standards shall be

withdrawn at the latest by July 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 12115:2011.
In comparison with EN 12115:2011 the following changes have been made:
— the scope now excludes hose assemblies for anhydrous ammonia (EN ISO 5771);
— the normative references have been updated;

— in subclause 14.3, “Identification of hose assemblies”, a permission has been added that bands may

be replaced by permanently adhered labelling bearing the same information, e.g. coloured labels at

the coupling;

— a warning has been added at the beginning of informative Annex F, “Resistance to chemicals

conveyed” to explicitly point out that the Annex has not been changed compared to

EN 12115:2011;
— an environmental checklist (informative Annex G) has been added;
— the document has been editorially revised.

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, 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.
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SIST EN 12115:2021
EN 12115:2021 (E)
Introduction

This document has been prepared to provide minimum acceptable requirements for the satisfactory

performance of flexible rubber and thermoplastics hoses and hose assemblies with unspecified

reinforcement and linings of different types of synthetic rubbers and thermoplastics, for each chemical

substance conveyed.

A list of hose lining material resistant to specific chemical substances, identified by CAS number, is

given as Annex F (informative). This list is for informational purposes only.
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SIST EN 12115:2021
EN 12115:2021 (E)
1 Scope

This document specifies requirements for two types of hose assemblies (Types D and SD) and four

grades based on electrical properties with hoses made of rubber or thermoplastics and hose fittings

made of metal designed to convey liquid or gaseous chemical substances, hereinafter termed the

“chemicals conveyed”.

The hose assemblies are intended for use with chemicals conveyed in the temperature range of –20 °C

to +65 °C at a working pressure ≤ 10 bar .

NOTE 1 This document sets out requirements for these hose assemblies to ensure that users are not exposed to

danger from fire or explosion and that the environment is protected against contamination or damage.

NOTE 2 Other temperatures and working pressures than those given above can be agreed with the

manufacturer, provided that the marking on the hose (see 14.1) states this and the requirements of Table 5 and all

the other requirements are met.

NOTE 3 Other diameters than those given in this document can be agreed with the manufacturer.

NOTE 4 This document also provides guidance on the storage of hose assemblies (Clause 15).

NOTE 5 The attention of users is drawn to Annex F concerning the selection of lining material related to the

chemical(s) to be conveyed by the hoses and/or hose assemblies.
This document does not apply to hose assemblies for:
— aircraft refuelling (EN ISO 1825);
— fuel dispensing (EN 1360);
— oil burners (EN ISO 6806);
— refrigerant circuits;
— fuel truck delivery (EN 1761);
— liquid petroleum gases (LPG) (EN 1762, EN 16436-2);
— fire-fighting (EN ISO 14557);
— oil suction and discharge (EN 1765);
— rotary drilling (EN ISO 6807);
— fuel dispensing with vapour recovery systems (EN 13483);
— anhydrous ammonia (EN ISO 5771).

This document does not apply to multilayer hose assemblies (EN 13765 and EN 13766).

1 bar = 0,1 MPa.
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SIST EN 12115:2021
EN 12115:2021 (E)
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 10244-2, Steel wire and wire products - Non-ferrous metallic coatings on steel wire - Part 2: Zinc or

zinc alloy coatings

EN 10270-1, Steel wire for mechanical springs - Part 1: Patented cold drawn unalloyed spring steel wire

EN 10270-2, Steel wire for mechanical springs - Part 2: Oil hardened and tempered spring steel wire

EN ISO 1402, Rubber and plastics hoses and hose assemblies - Hydrostatic testing (ISO 1402)

EN 10088-3:2014, Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars,

rods, wire, sections and bright products of corrosion resisting steels for general purposes

EN ISO 4671, Rubber and plastics hoses and hose assemblies - Methods of measurement of the dimensions

of hoses and the lengths of hose assemblies (ISO 4671)

EN ISO 7233, Rubber and plastics hoses and hose assemblies - Determination of resistance to vacuum (ISO

7233)

EN ISO 7326, Rubber and plastics hoses - Assessment of ozone resistance under static conditions (ISO

7326)

EN ISO 8031:2020, Rubber and plastics hoses and hose assemblies - Determination of electrical resistance

and conductivity (ISO 8031:2020)

EN ISO 8033, Rubber and plastics hoses - Determination of adhesion between components (ISO 8033)

EN ISO 8330:2014, Rubber and plastics hoses and hose assemblies - Vocabulary (ISO 8330:2014)

EN ISO 10619-1, Rubber and plastics hoses and tubing - Measurement of flexibility and stiffness - Part 1:

Bending tests at ambient temperature (ISO 10619-1)

EN ISO 10619-2:2018, Rubber and plastics hoses and tubing - Measurement of flexibility and stiffness -

Part 2: Bending tests at sub-ambient temperatures (ISO 10619-2:2017)

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 1817, 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

BS 3592-1:1986, Steel wire for hose reinforcement - Specification for coated round and flat steel wire for

rubber hose reinforcement
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SIST EN 12115:2021
EN 12115:2021 (E)
3 Terms and definitions

For the purposes of this document, the terms and definitions given in EN ISO 8330:2014 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 https://www.iso.org/obp

NOTE In this document the word “fitting” has been used; this is, in some cases, interchangeable with the

word “coupling”.
4 Classification

Hoses and hose assemblies for this application shall be divided into two types, according to their duty

requirements:
— Type D: hoses and hose assemblies for delivery duty only;
— Type SD: hoses and hose assemblies for suction and delivery duty.

Hoses and hose assemblies for this application shall be divided into four grades:

— Grade M: electrically bonded;

— Grade Ω: electrically conductive; see EN ISO 8031:2020, Annex A for new recommended marking to

indicate conductive lining, conductive cover or conductive lining and cover;

— Grade M/T: electrically bonded and with an electrical resistance through the hose wall not

exceeding 10 Ω;

— Grade Ω/T: electrically conductive and with an electrical resistance through the hose wall not

exceeding 10 Ω.
5 Couplings and end fittings

Hoses shall be fitted with end fittings and couplings to form hose assemblies. Examples are given in

Annex C.
6 Materials and construction
6.1 General
Hose Type D shall consist of a lining, reinforcement and a cover.

Hose Type SD shall consist of a lining, reinforcement and a cover, and in addition incorporate one or

more helixes.
An environmental checklist is given in Annex G.
6.2 Lining

The lining shall be resistant to the chemical substances conveyed. The lining shall be uniform in quality

and thickness and shall be free from porosity, air holes, foreign inclusions and other defects which

could impair the expected use.
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SIST EN 12115:2021
EN 12115:2021 (E)
6.3 Cover

The cover shall be resistant to mechanical damage, wear and environmental effects due to weather and

short-term chemical exposure.
6.4 Reinforcement

The reinforcement shall consist of a textile material which is resistant to the medium conveyed.

6.5 Helical wires

The helix or helixes shall be fully embedded into the hose wall so that contact with the medium

conveyed is avoided.
7 Dimensions and tolerances, typical masses
7.1 Diameters, thickness, vacuum stability, bend radii and resistance to vacuum

The inside and outside diameters of the hoses, the minimum thickness of lining and cover and the

minimum bend radius shall conform to the values given in Table 1 or Table 2 (depending on the type).

The Type D hoses shall be able to withstand an internal vacuum as specified in Table 1 (vacuum

stability) without collapse or changes in diameter and length in excess of the values specified in Table 5.

Table 1 — Dimension requirements, Type D hoses
Nominal Inside Tolerance Outside Tolerance Minimum thickness Min. bend Vacuum
bore diameter diameter radius stability
mm mm mm
mm mm mm bar
lining cover
13 13,0 23,0 90
–0,5
19 19,0 31,0 125
25 25,0 ±0,5 37,0 ±1,0 2,0 1,6 150
32 32,0 44,0 175 –0,4
38 38,0 51,0 225
50 50,0 66,0 275
±0,7 –0,3
51 51,0 67,0 275
63 63,0 79,0 ±1,2 300
75 75,0 91,0 2,0 2,0 350
76 76,0 ±0,8 92,0 350 —
100 100,0 116,0 450
±1,6
101,5 101,5 118,0 450

The dimensions for the minimum lining thickness do not apply to hoses made from materials PE-X/UPE and fluoro-plastics.

The thickness for these materials shall be 0,4 mm.

The bend radii specified do not apply to hoses made from PE-X/UPE and fluoro-plastics where the value shall be 1,5 × the

values shown above.
Only applies to operation at not less than 1 bar, otherwise the hose will kink.

The Type SD hoses shall be able to withstand an internal vacuum as specified in Table 2 (resistance to

vacuum) and shall conform to the requirements specified in Table 5.
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SIST EN 12115:2021
EN 12115:2021 (E)
Table 2 — Dimension requirements, Type SD hoses
Nominal Inside Tolerance Outside Tolerance Minimum Min. bend Resistance
bore diameter diameter thickness radius to vacuum
mm mm
mm mm mm mm bar
lining cover
19 19,0 31,0 125
25 25,0 37,0 150
±0,5 ±1,0 1,6 1,6
32 32,0 44,0 175
38 38,0 51,0 225
50 50,0 66,0 275
±0,7 ±1,2 1,7 1,7
51 51,0 67,0 275 –0,8
63 63,0 79,0 300
75 75,0 91,0 ±1,2 1,7 350
76 76,0 ±0,8 92,0 1,8 350
100 100,0 116,0 450
±1,6 2,0
101,5 101,5 118,0 450

The dimensions for the minimum lining thickness do not apply to hoses made from materials PE-X/UPE and

fluoro-plastics. The thickness for these materials shall be 0,4 mm.

The bend radii specified do not apply to hoses made from PE-X/UPE and fluoro-plastics where the value shall

be 1,5 × the values shown above.
7.2 Concentricity

When determined in accordance with EN ISO 4671, the concentricity, based on a total indicator reading

between the internal diameter and the outside surface of the cover, shall be ≤ 1,0 mm for hoses ≤ 51

nominal bore and ≤ 1,5 mm for hoses > 51 nominal bore.
7.3 Length of hose assemblies

The length of the hose assembly shall be the intended installed length measured from sealing surfaces

of the end fittings.
+15
For hose assembly lengths ≤ 1 000 mm the tolerance shall be mm.
−10
+1,5
For hose assembly lengths > 1 000 mm the tolerance shall be %.
−10,
8 Physical properties of materials used for hoses
8.1 General

The physical properties of the materials used for the lining and cover shall conform to the values given

in Table 3, when tested in accordance with the methods listed in Table 3. Tests shall be carried out

either on samples taken from the hose or from separately vulcanized sheets (to the same degree as the

hose).

The cover is not intended to be in contact with the chemical conveyed. Whenever such contact occurs

the cover of the hose should be examined for harmful effects.
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SIST EN 12115:2021
EN 12115:2021 (E)
Table 3 — Physical properties of materials
Item Property Unit Requirement Test method
lining cover
ISO 37
1 Tensile strength min. MPa 8,0 8,0
(dumbbell test pieces)
2 Elongation at break
2.1 Fluro-rubber (FKM) 150 150
ISO 37
min. %
(dumbbell test pieces)
2.2 Other materials, see Table 4 250 250
3 Ageing
3.1 Tensile strength change — 15
% from the ISO 188 (air oven method)
max.
un-aged value 7 days at (70 ± 1) °C
3.2 Elongation at break change — 20
4 Abrasion resistance
4.1 black filled compound — 200
ISO 4649:2017
max.
mm
non-black filled compound,
Method A
4.2 — 350
coloured
8.2 Materials used for the lining
The lining shall be made from the range of materials given in Table 4.

NOTE The characteristics within a material group can vary, e.g. dependent upon the type of polymer, ratio of

the mixture and vulcanization method.
Table 4 — Material groups for hose lining

Polymer Material for hose lining and typical applications Recommended colour coding on

reference hose cover
Hoses for mineral oil products of all
NBR 1 Yellow
types less than 50 % aromatic
Acrylonitrile butadiene
Hoses for aromatic and chlorinated
NBR 2 rubbers Blue
hydrocarbons and solvents
NBR 3 Hoses for oily foodstuffs White

NR Isoprene rubber (natural rubber), e.g. for potable alcohol No recommended colour

IIR Isobutene/Isoprene rubber (butyl rubber)
Lilac
Terpolymers made from ethylene, propylene and a diene with an
EPDM
unsaturated part portion of the diene in the side chain
CSM Chlorosulfonated polyethylene Green
Rubbers with fluoro, fluoroalkyl or fluoroalkoxy groups on the polymer
FKM Green and white
chain (fluoro-rubber)

PE-X/UPE Cross-linked polyethylene/ultra-high molecular polyethylene Blue and white

Fluoro-plastics (e.g. PTFE, PFA, FEP…) Blue and white and a third colour
For alphabetic abbreviations, see ISO 1629.

No reference is given. Details of materials and their resistance against the chemical conveyed shall be agreed from

manufacturer's information, see Annex F.

Other materials may be agreed between the manufacturers and user, but all requirements of this

document shall be met.
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SIST EN 12115:2021
EN 12115:2021 (E)
8.3 Material of the helix

The helix or helixes shall consist of galvanized hard or mild steel wire, in accordance with EN 10270-1

or EN 10270-2 (galvanized to EN 10244-2), or to BS 3592-1:1986. Alternatively, the helix or helixes

may, when required, consist of stainless steel wire, in accordance with EN 10088-3:2014, steel numbers

1.4306, 1.4401, 1.4404 or 1.4436.
8.4 Materials of the end fittings and couplings

The material of end fittings and couplings shall be chemically resistant to the substance conveyed.

Information concerning suitability of various metals is given in Annex F.
9 Performance requirements of hoses and hose assemblies

The physical properties of the finished hose and hose assemblies shall conform to the values given in

Table 5, when tested in accordance with the appropriate methods given in Table 5.

Table 5 — Performance requirements of hoses and hose assemblies
Property Unit Requirement Test method
No leakage or other signs
Proof test pressure — of weakness at 1,5 × the EN ISO 1402
working pressure
Change in length
maximum allowed:
— at proof test pressure Type D 0 to +8
% EN ISO 1402
Type SD 0 to +10
— at −0,8 respectively −0,9 bar
Type SD −2 %
vacuum
Twist at proof test pressure °/m maximum 8 EN ISO 1402
Resistance to vacuum; No failure, no collapse, no
Vacuum according to Table 2 — blisters or delamination of EN ISO 7233
for 10 min lining (Type SD)
Vacuum stability; No changes in diameter
Vacuum according to Table 1 for % and/or length > –2 % EN ISO 7233
10 min (Type D)
Burst pressure minimum four times the
bar EN ISO 1402
working pressure
Adhesion between components,
N/mm minimum 2,4 EN ISO 8033
dry
Crush recovery, Type SD only
% maximum 3 Annex D
(peak compressive strength test)
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SIST EN 12115:2021
EN 12115:2021 (E)
Property Unit Requirement Test method
EN ISO 7326, with
relative humidity
(55 ± 10) %,
ozone concentration
No cracking observed
(50 ± 5) pphm ,
Ozone resistance —
under × 2 magnification
elongation 20 %.
Test duration: ( 72 ) h.
Test temperature:
(40 ± 2) °C
a) Burning with a naked
flame to cease within
20 s of removal of the
burner;
Flammability test — b) No further glowing Annex E
visible 2 min after
removal of the burner;
c) Hose shall show no
sign of leakage.
10 /assembly-M-grade
EN ISO 8031:2020,
6 Clause 4
10 /assembly-Ω-grade
Electrical properties Ω
EN ISO 8031:2020, 4.9
10 /hose wall-T-grade
Deformation of the external hose
diameter during bending test (at
min. bending radius with, for % 10 EN ISO 10619-1
Type D only, an internal pressure
of 0,7 bar)
No permanent
EN ISO 10619-2:2018,
Flexibility at –20 °C — deformation or visible
Method B
structural damage

The rubber industry expresses ozone concentration as parts per hundred million parts of air (pphm), a

dimensionless quantity equivalent to 1× 10 % .
10 Electrical properties

The electrical resistance of hoses and hose assemblies can be obtained by two methods:

a) Incorporating two low resistance bonding wires into the hose construction. These shall be spirally

applied and shall be positioned in such a way to cross uniformly.

When attaching fittings to these hoses, the bonding wires shall be folded into the hose bore,

securely positioned between the lining and the fitting tail, and extended a minimum of one third of

the length of the fitting tail into the bore.

When tested in accordance with EN ISO 8031, the resistance along the bonding wires, in the case of

hoses, or the resistance between fittings, in the case of hose assemblies, shall not exceed 10 Ω per

length. When obtaining electrical continuity by this method the hose shall be marked with the

symbol “M”.
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SIST EN 12115:2021
EN 12115:2021 (E)

b) Incorporating electrically conducting materials in the hose construction. When attaching fittings to

these hoses, an adequate connection between the end-fittings and the conductive layer shall be

made. Conductive layers can be either lining, cover or both lining and cover.

When tested in accordance with EN ISO 8031, the resistance along the conductive layer in the case

of hoses, or the resistance between the fittings in the case of hose assemblies, shall not exceed

10 Ω per length. When obtaining electrical resistance by this method the hose shall be marked

with the symbol “Ω “.

c) When there is a need for hose assemblies of a) or b) with an electrical resistance through the hose

wall of not more than 10 Ω these hoses shall be marked with an additional symbol “

...

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