SIST EN 12115:2011
(Main)Rubber and thermoplastics hoses and hose assemblies for liquid or gaseous chemicals - Specification
Rubber and thermoplastics hoses and hose assemblies for liquid or gaseous chemicals - Specification
This European Standard 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 European Standard 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 European Standard can be agreed with the manufacturer.
NOTE 4 This European Standard 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 standard does not apply to hose assemblies for:
- aircraft refuelling (EN 1361);
- fuel dispensing (EN 1360);
- oil burners (EN ISO 6806);
- refrigerant circuits;
- fuel truck delivery (EN 1761);
- liquid petroleum gases (LPG) (EN 1762);
- fire fighting (EN ISO 14557);
- oil suction and discharge (EN 1765);
- rotary drilling (ISO 6807);
- fuel dispensing with vapour recovery system (EN 13483).
This European Standard does not apply to multilayer hose assemblies (EN 13765 and EN 13766).
Gummi- und Kunststoffschläuche und -schlauchleitungen für flüssige oder gasförmige Chemikalien - Anforderungen
Diese Europäische Norm legt Anforderungen fest für zwei Typen von Schlauchleitungen (Typ D und Typ SD) und vier Klassen gemäß den elektrischen Eigenschaften 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 bar vorgesehen ).
ANMERKUNG 1 Diese Europäische Norm legt Sicherheitsanforderungen für diese Schlauchlei¬tungen fest, damit Anwender keinen Gefahren durch Brand oder Explosionen ausge¬setzt werden und damit die Umwelt vor Verunreini-gungen 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 dieser Europäischen Norm genannten können mit dem Hersteller vereinbart werden.
ANMERKUNG 4 Diese Europäische Norm gibt auch Hinweise für die Lagerung von Schlauchlei¬tungen (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).
Diese Norm gilt nicht für Schlauchleitungen für:
- Flugzeugbetankung (EN 1361);
- Abgabeeinrichtungen an Tankstellen (EN 1360);
- Ölbrenner (EN ISO 6806);
- Kältemittelkreisläufe;
- Tanklastwagen für Kraftstoffe (EN 1761);
- Flüssiggase (LPG) (EN 1762);
- Feuerwehren (EN ISO 14557);
- Ansaugen und Fördern von Öl (EN 1765);
- Rotary-Bohren (EN ISO 6807);
- Kraftstoffabgabe mit Gasrückführung (EN 13483).
Tuyaux et flexibles en caoutchouc et en matériaux thermoplastiques pour substances chimiques liquides ou gazeuses - Spécification
La présente Norme européenne 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 bar ).
NOTE 1 La présente Norme européenne 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 cette norme peuvent faire l’objet d’un accord avec le fabricant.
NOTE 4 La présente Norme européenne 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.
La présente norme ne s’applique pas aux assemblages flexibles utilisés pour :
- le ravitaillement des avions (EN 1361) ;
- 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) ;
- la lutte contre les incendies (EN ISO 14557) ;
Gumene in plastomerne cevi ter cevni priključki za tekoče in plinaste kemikalije - Specifikacija
Ta evropski standard določa zahteve za dva tipa cevnih priključkov (tip D in SD) in štiri razrede na osnovi električnih lastnosti s cevmi, narejenih iz gume ali plastomerov, in cevnimi fitingi, narejenimi iz kovine, ki prevajajo tekoče ali plinaste kemijske snovi, v nadaljevanju »prenesene kemikalije«.
Cevni priključki se uporabljajo s prenesenimi kemikalijami v temperaturnem razponu med 20 °C in +65 °C pri delovnem tlaku <= 10 bar.
OPOMBA 1: Ta evropski standard postavlja zahteve za te cevne priključke, s katerimi se zagotavlja, da uporabniki niso izpostavljeni nevarnosti požara ali eksplozije in da je okolje zaščiteno pred kontaminacijo ali škodo.
OPOMBA 2: O drugih temperaturah in delovnih tlakih, ki niso navedeni zgoraj, se je mogoče dogovoriti s proizvajalcem, če oznaka na cevi (glej 14.1) navaja, da so zahteve iz preglednice 5 in druge zahteve izpolnjene.
OPOMBA 3: O drugih premerih, ki niso navedenih v tem evropskem standardu, se je mogoče dogovoriti s proizvajalcem.
OPOMBA 4: Ta evropski standard podaja tudi vodilo za shranjevanje cevnih priključkov (točka 15).
OPOMBA 5: Uporabniki naj bodo pozorni na dodatek F, ki obravnava izbor materiala za obloge, povezanega s kemikalijami, ki se bodo prenašale po teh ceveh in/ali cevnih priključkih.
Ta standard ne velja za cevne priključke za:
- polnjenje zračnih plovil z gorivom (EN 1361);
- točenje goriva (EN 1360);
- oljne peči (EN ISO 6806);
- krogotoke s hladilnimi sredstvi;
- dostavo goriva s cisterno (EN 1761);
- utekočinjene naftne pline (UNP) (EN 1762);
- gašenje požarov (EN ISO 14557);
- dotok in odtok nafte (EN ISO 1765);
- krožno vrtanje (ISO 6807);
- točenje goriva s sistemom za rekuperacijo hlapov (EN 13483).
Ta evropski standard ne velja za večplastne cevne priključke (EN 13765 in EN 13766).
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.6SHFLILNDFLMDGummi- und Kunststoffschläuche und -schlauchleitungen für flüssige oder gasförmige Chemikalien - AnforderungenTuyaux et flexibles en caoutchouc et en matériaux thermoplastiques pour substances chimiques liquides ou gazeuses - SpécificationRubber and thermoplastics hoses and hose assemblies for liquid or gaseous chemicals - Specification83.140.40Gumene ceviHosesICS:Ta slovenski standard je istoveten z:EN 12115:2011SIST EN 12115:2011en,fr,de01-november-2011SIST EN 12115:2011SLOVENSKI
STANDARDSIST EN 12115:20001DGRPHãþD
SIST EN 12115:2011
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12115
January 2011 ICS 23.040.70 Supersedes EN 12115:1999English Version
Rubber and thermoplastics hoses and hose assemblies for liquid or gaseous chemicals - Specification
Tuyaux et assemblages flexibles en caoutchouc et en matériaux thermoplastiques pour substances chimiques liquides ou gazeuses - Spécifications
Gummi- und Kunststoffschläuche und -schlauchleitungen für flüssige oder gasförmige Chemikalien - AnforderungenThis European Standard was approved by CEN on 30 November 2010.
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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12115:2011: ESIST EN 12115:2011
EN 12115:2011 (E) 2 Contents Page Foreword .4Introduction .51Scope .62Normative references .73Terms and definitions .74Classification .85Couplings and end fittings .86Materials and construction .86.1General .86.2Lining .86.3Cover .86.4Reinforcement .86.5Helical wires .97Dimensions and tolerances, typical masses .97.1Diameters, thickness, vacuum stability, bend radii and resistance to vacuum .97.2Concentricity . 107.3Length of hose assemblies . 108Physical properties of materials used for hoses . 108.1General . 108.2Materials used for the lining . 118.3Material of the helix . 128.4Materials of the end fittings and couplings . 129Performance requirements of hoses and hose assemblies . 1210Electrical properties . 1411Frequency of testing . 1512Type tests . 1513Test report . 1514Marking . 1514.1Hoses . 1514.2Hose fittings . 1614.3Identification of hose assemblies . 1615Storage and admissible storage time . 17Annex A (normative)
Test frequency for type tests and routine tests . 18Annex B (informative)
Production acceptance tests . 19Annex C (informative)
Couplings and fittings . 20Annex D (normative)
Crush recovery test (for SD hoses only) . 21Annex E (normative)
Flammability test . 23E.1Test pieces . 23E.2Apparatus . 23E.3Test method . 23Annex F (informative)
Resistance to chemicals conveyed . 25SIST EN 12115:2011
EN 12115:2011 (E) 3 F.1General . 25F.2Suitability of hose . 25F.3Resistance of end fitting materials . 25F.4Conveyance of chemicals other than those listed in Table F.2 . 26Bibliography . 50
SIST EN 12115:2011
EN 12115:2011 (E) 4 Foreword This document (EN 12115:2011) 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 2011, and conflicting national standards shall be withdrawn at the latest by July 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12115:1999. In comparison with EN 12115:1999 the following changes have been made: a) the test procedure to determine the electrical resistance through the hose wall is given in Annex A (normative); b) a list of hose lining material resistant to specific chemical substances, identified by CAS number, has been added as Annex F (informative); c) the normative references have been updated. 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
SIST EN 12115:2011
EN 12115:2011 (E) 5 Introduction This European Standard 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, has been added as Annex F (informative). This list is for information only. SIST EN 12115:2011
EN 12115:2011 (E) 6 1 Scope This European Standard 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 European Standard 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 European Standard can be agreed with the manufacturer. NOTE 4 This European Standard 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 standard does not apply to hose assemblies for: aircraft refuelling (EN 1361); fuel dispensing (EN 1360); oil burners (EN ISO 6806); refrigerant circuits; fuel truck delivery (EN 1761); liquid petroleum gases (LPG) (EN 1762); fire fighting (EN ISO 14557); oil suction and discharge (EN 1765); rotary drilling (EN ISO 6807); fuel dispensing with vapour recovery system (EN 13483). This European Standard does not apply to multilayer hose assemblies (EN 13765 and EN 13766).
1) 1 bar = 0,1 MPa. SIST EN 12115:2011
EN 12115:2011 (E) 7 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. 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 1402:2009) EN ISO 1746, Rubber or plastics hoses and tubing — Bending tests (ISO 1746:1998, including technical corrigendum 1:1999) 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 4671:2007) EN ISO 4672:1999, Rubber and plastics hoses — Sub-ambient temperature flexibility tests (ISO 4672:1997) EN ISO 7233, Rubber and plastics hoses and hose assemblies — Determination of resistance to vacuum (ISO 7233:2006) EN ISO 7326, Rubber and plastics hoses — Assessment of ozone resistance under static conditions
(ISO 7326:2006) EN ISO 8031:2009, Rubber and plastics hoses and hose assemblies — Determination of electrical resistance and conductivity (ISO 8031:2009) EN ISO 8033, Rubber and plastics hoses — Determination of adhesion between components (ISO 8033:2006) EN ISO 8330:2008, Rubber and plastics hoses and hose assemblies — Vocabulary (ISO 8330:2007) 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 1629, Rubber and latices — Nomenclature ISO 1817, Rubber, vulcanized — Determination of the effect of liquids ISO 4649:2002, Rubber, vulcanized or thermoplastic — Determination of abrasion resistance using a rotating cylindrical drum device ISO 8331, Rubber and plastics hoses and hose assemblies — Guidelines for selection, storage, use and maintenance BS 3592-1:1986, Steel wire for hose reinforcement — Specification for coated round and flat steel wire for rubber hose reinforcement 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 8330:2008 apply. SIST EN 12115:2011
EN 12115:2011 (E) 8 NOTE In this European Standard 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 : electrically conductive; see EN ISO 8031:2009, 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 109 ; Grade /T: electrically conductive and with an electrical resistance through the hose wall not exceeding 109 . 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 Hoses Type D shall consist of a lining, reinforcement and a cover. Hoses Type SD shall consist of a lining, reinforcement and a cover, and in addition incorporate one or more helixes. 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. 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. SIST EN 12115:2011
EN 12115:2011 (E) 9 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 bore Inside diameter mm Tolerance
mm Outside diameter
mm Tolerance mm Minimum thickness mm Bend radius mm min b Vacuumstability
bar lining a cover 13 13,0
±0,5 23,0
±1,0
2,0
1,6 90 -0,5 19 19,0 31,0 125 25 25,0 37,0 150
-0,4 32 32,0 44,0 175 38 38,0 51,0 225 50 50,0
±0,7 66,0
±1,2
2,0
2,0 275
-0,3 51 51,0 67,0 275 63 63,0
±0,8 79,0 300
— 75 75,0 91,0 350c
76 76,0 92,0 350c 100 100,0 116,0
±1,6 450c 101,5 101,5 118,0 450c a 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. b The bend radii specified do not apply to hoses made from PE-X/UPE and fluoro-plastics where the value shall be 1,5 x the values shown above. c 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. SIST EN 12115:2011
EN 12115:2011 (E) 10 Table 2 — Dimension requirements, Type SD hoses Nominal bore Inside diameter
mm Tolerance
mm Outside diameter
mm Tolerance
mm Minimum thicknessmm Bend radius
mm
min b Resistance to vacuum
bar lining a cover 19 19,0
±0,5 31,0
±1,0
1,6
1,6 125
-0,8
25 25,0 37,0 150 32 32,0 44,0 175 38 38,0 51,0 225 50 50,0
±0,7 66,0
±1,2
1,7
1,7 275 51 51,0 67,0 275 63 63,0
±0,8 79,0
±1,2
1,8
1,7 300 75 75,0 91,0 350 76 76,0 92,0 350 100 100,0 116,0
±1,6
2,0 450 101,5 101,5 118,0 450 a 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. b The bend radii stated do not apply to hoses made from PE-X/UPE and fluoro-plastics where the value shall be 1,5 x 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. For hose assembly lengths ≤ 1 000 mm the tolerance shall be (+15/−10) mm. For hose assembly lengths > 1 000 mm the tolerance shall be (+1,5/−1,0) %. 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). SIST EN 12115:2011
EN 12115:2011 (E) 11 NOTE 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. Table 3 — Physical properties of materials Property Unit Requirement Test method Lining Cover Tensile strength
min. MPa 8,0 8,0 ISO 37 (dumbbell test pieces) Elongation at break Fluoro-rubber (FKM)
min. Other materials, see Table 4
min. %
150 250
150 250
ISO 37 (dumbbell test pieces) Ageing Tensile strength change
max. Elongation at break change
max. % from the un-aged value
— —
15 20
ISO 188 (air-oven method) 7 days at (70 ± 1) °C Abrasion resistance black filled compound
max. non-black filled compound, coloured
mm³
— —
200 350
ISO 4649:2002 Method A
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 type of polymer, ratio of mixture and vulcanization method. SIST EN 12115:2011
EN 12115:2011 (E) 12 Table 4 — Materials groups for hose lining Polymer a reference Material for hose lining and typical applications Recommended colour coding on hose cover NBR 1 Acrylonitrile butadiene rubbers Hoses for mineral oil products of all types less than 50 % aromatic Yellow NBR 2 Hoses for aromatic and chlorinated hydrocarbons and solvents Blue 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 EPDM Terpolymers made from ethylene, propylene and a diene with an unsaturated part portion of the diene in the side chain CSM Chlorosulfonated polyethylene Green FKM Rubbers with fluoro, fluoroalkyl or fluoroalkoxy groups on the polymer chain (fluoro-rubber) Green and white PE-X/UPE Cross-linked polyethylene/ultra-high molecular polyethylene Blue and white b Fluoro-plastics (e.g. PTFE, PFA, FEP…) Blue and white and a third colour a For alphabetic abbreviations see ISO 1629. b 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 European Standard shall be met. 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 10088-3:2005, 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, either metal or plastics, 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. SIST EN 12115:2011
EN 12115:2011 (E) 13 Table 5 — Performance requirements of hoses and hose assemblies Property Unit Requirement Test method Proof test pressure
— No leakage or other signs of weakness 1,5 × the working pressure EN ISO 1402 Change in length
at proof test pressure
at -0,8 respectively -0,9 bar vacuum % maximum allowed Type D
0 to +8 Type SD
0 to +10 Type SD
-2 % EN ISO 1402 Twist at proof test pressure
.
°/m maximum 8 EN ISO 1402 Resistance to vacuum,
Vacuum according to Table 2
for 10 min — No failure, no collapse, no blisters or delamination of lining (Type SD) EN ISO 7233 Vacuum stability
Vacuum according to Table 1 for 10 minutes % No changes in diameter and/or length > -2 % (Type D) EN ISO 7233 Burst pressure
bar minimum four times the working pressure EN ISO 1402 Adhesion between
components,
dry N/mm minimum 2,4 EN ISO 8033 Crush recovery,
. Type SD only (peak compressive strength test) % maximum 3 Annex D Ozone resistance — No cracking observed under
× 2 magnification EN ISO 7326 relative humidity (55 ± 10) %,
ozone concentration (50 ± 5) pphm,
elongation 20 % Test duration: (7202−) h. Test temperature: (40 ± 2) °C Flammability test — a) Burning with a naked flame to cease within 20 s of removal of the burner; b) No further glowing visible 2 min after removal of the burner; c) Hose shall show no sign of leakage. Annex E Electrical properties
10²/ assembly-M-grade 106 / assembly--grade 109/ hose wall-T-grade
EN ISO 8031:2009, Clause 4 EN ISO 8031:2009, 4.9
SIST EN 12115:2011
EN 12115:2011 (E) 14 Table 5 (continued) Property Unit Requirement Test method Bending test
at min. bending radius with, for Type D
only, an internal pressure of 0,7 bar,
deformation of the external hose
diameter % 10 EN ISO 1746 Flexibility
At -20 °C — No permanent deformation or visible structural damage EN ISO 4672:1999 Method B
10 Electrical properties 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 minimum 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 102 Ω per length. When obtaining electrical continuity by this method the hose shall be marked with the symbol “M”. 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, or 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 106 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 109
these hoses shall be marked with an additional symbol "/T", e.g. "M/T" or "Ω/T". Such hose assemblies are required in situations where dissipation of electrostatic charges are a safety requirement (i.e. in explosive environments). The test procedure to determine the electrical resistance through the hose wall is given in
EN ISO 8031:2009, 4.9. This test will only give representative results when it is conducted on a hose assembly of identical construction and materials, with the same type of fittings and materials as the production hose which is intended for this service. During and after subjection to the hydrostatic tests as given in EN ISO 1402, electrical continuity of each hose shall be maintained from end to end and electrical continuity of each hose assembly shall be maintained from one fitting to the other. Electrical conductivity in Type SD shall not be obtained by only connecting the fittings to the helixes. The property required in c) shall be verified for each design during type testing only. SIST EN 12115:2011
EN 12115:2011 (E) 15 11 Frequency of testing The minimum frequency of testing shall conform to the schedule given in Annex A. Type tests are tests to verify that the hose or hose assembly conforms to all requirements of this European Standard. Routine tests are tests on each length of finished hose or hose assembly. Production acceptance tests are those tests carried out per batch or 10 batches, see schedule given in
Annex B; this is for guidance only. 12 Type tests Type tests shall be carried out in order to confirm that all the material, construction and test requirements of this European Standard have been met by the method of manufacture and hose design. Type tests shall be repeated at a minimum of every five years or whenever there is a change in design, method of manufacture or materials. Type tests shall be performed on at least a reference diameter of a hose e.g. 50 mm I.D. of each design in the manufacturer's range for each type. 13 Test report When requested by the purchaser, the manufacturer or supplier shall provide a test report with each length or batch of hoses or hose assemblies supplied to the purchaser. In this
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.