1、BSI Standards PublicationBS EN ISO 6808:2014Plastics hoses and hoseassemblies for suction andlow-pressure dischargeof petroleum liquids SpecificationBS EN ISO 6808:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 6808:2014.It supersedes BS EN ISO 6808:20
2、01 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/66, Rubber and plastics tubing, hoses and hoseassemblies.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include
3、 all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 69766 1ICS 75.200; 83.140.40Compliance with a British Standard cannot confer immunity fromlegal obligations.This
4、British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2014.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 6808 July 2014 ICS 83.140.40; 75.200 Supersedes EN ISO 6808:2000English Versi
5、on Plastics hoses and hose assemblies for suction and low-pressure discharge of petroleum liquids - Specification (ISO 6808:2014) Tuyaux et flexibles en plastique pour aspiration et refoulement basse pression des liquides ptroliers - Spcifications (ISO 6808:2014) Kunststoffschluche und Schlauchleitu
6、ngen fr das Ansaugen und Frdern von Flssigkeiten aus Erdl bei niedrigem Druck - Spezifikation (ISO 6808:2014) This European Standard was approved by CEN on 28 May 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European S
7、tandard 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 (Eng
8、lish, 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,
9、 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, Slovakia, Slovenia, Spain, Sweden, Switzerlan
10、d, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Mem
11、bers. Ref. No. EN ISO 6808:2014 EBS EN ISO 6808:2014EN ISO 6808:2014 (E) 3 Foreword This document (EN ISO 6808:2014) has been prepared by Technical Committee ISO/TC 45 “Rubber and rubber products” in collaboration with Technical Committee CEN/TC 218 “Rubber and plastics hoses and hose assemblies” th
12、e 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 January 2015, and conflicting national standards shall be withdrawn at the latest by January 2015. Attention
13、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 ISO 6808:2000. According to the CEN-CENELEC Internal Regulations, th
14、e national standards organizations 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, Latvi
15、a, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 6808:2014 has been approved by CEN as EN ISO 6808:2014 without any modification. BS EN ISO 6808:2014ISO 6
16、808:2014(E) ISO 2014 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 24 Classification Hose types 25 Construction and materials Requirements . 26 Dimensions and tolerances . 26.1 Diameter . 26.2 Length . 37 Physical properties
17、 of finished hoses . 37.1 Hydrostatic requirements at standard laboratory temperature 37.2 Hydrostatic requirements at 45 C 37.3 Change in length (Type 2 only) . 47.4 Suction resistance 47.5 Reinforcement fracture 47.6 Minimum bend test . 57.7 Cold bend test 57.8 Electrical continuity . 58 Physical
18、properties of the flexible thermoplastics material 58.1 Loss in mass on heating 58.2 Tensile strength and elongation at break . 58.3 Fuel resistance . 68.4 Oil resistance 68.5 Resistance to accelerated ageing . 69 Hose assemblies 79.1 Couplings and method of attachment . 79.2 Test for security of co
19、upling 79.3 Electrical bonding. 79.4 Electrical wall resistance 710 Frequency of testing 711 Type tests . 812 Marking 812.1 Hoses . 812.2 Hose assemblies . 8Annex A (normative) Test frequency 9Annex B (informative) Production tests 10Annex C (normative) Reinforcement fracture test 11Annex D (normati
20、ve) Coupling security test .13Bibliography .14BS EN ISO 6808:2014ISO 6808:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
21、ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates
22、 closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval crite
23、ria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of
24、patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name u
25、sed in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical B
26、arriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 45, Rubber and rubber products, Subcommittee SC 1, Rubber and plastics hoses and hose assemblies.This third edition cancels and replaces the second edition (ISO 680
27、8:1999), which has been technically revised with the following changes: Throughout the document: Nominal bore was changed to hose size. Throughout the document: ISO 1817 Oil No. 3 was changed to IRM 903 oil. ISO 471, ISO 1746, and ISO 4672 were replaced by ISO 23529, ISO 10619-1, and ISO 10619-2, re
28、spectively. Terms and definitions clause was added. Type 1 and Type 2 maximum working pressures at 45 C were corrected. Hose construction for electrical bonding was updated. Tables 4 and 5: Note b was added. 7.2 and Table 5: Changed 55 C to 45 C. 9.3: Electrical bonding was redefined. 9.4: Added ele
29、ctrical wall resistance clause. Added frequency of testing clause. Added type tests clause. Added Annex A Test frequency. Added Annex B Production tests.iv ISO 2014 All rights reservedBS EN ISO 6808:2014ISO 6808:2014(E)IntroductionThis International Standard has been prepared to provide minimum acce
30、ptable requirements for the satisfactory performance of polymer-reinforced thermoplastics hoses for suction and discharge applications, conveying kerosene, heating oil, diesel fuel, and lubricating oils. These hoses are neither suitable for conveying automotive or aviation fuel nor suitable for mete
31、red delivery of any liquid.The list of hose sizes given in Tables 1 and 2 is not intended to be restrictive and will not preclude the manufacture of sizes outside the preferred-number range (the basis of the tables) and which might be the subject of individual national standards. ISO 2014 All rights
32、 reserved vBS EN ISO 6808:2014BS EN ISO 6808:2014Plastics hoses and hose assemblies for suction and low-pressure discharge of petroleum liquids SpecificationWARNING Persons using this International Standard should be familiar with normal laboratory practice. This International Standard does not purp
33、ort to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any national regulatory conditions.1 ScopeThis International Standard specifies the requirements for two
34、 types of polymer-reinforced thermoplastics hose and hose assembly for suction and discharge applications with kerosene, heating oil, diesel fuel, and lubricating oils in the temperature range 10 C to +45 C.NOTE The hoses can be stored in a static condition at 30 C to +65 C without damage by climati
35、c conditions.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (includi
36、ng any amendments) applies.ISO 176:2005, Plastics Determination of loss of plasticizers Activated carbon methodISO 188, Rubber, vulcanized or thermoplastic Accelerated ageing and heat resistance testsISO 527-3, Plastics Determination of tensile properties Part 3: Test conditions for films and sheets
37、ISO 868, Plastics and ebonite Determination of indentation hardness by means of a durometer (Shore hardness)ISO 1307, Rubber and plastics hoses Hose sizes, minimum and maximum inside diameters, and tolerances on cut-to-length hosesISO 1402, Rubber and plastics hoses and hose assemblies Hydrostatic t
38、estingISO 1817, Rubber, vulcanized or thermoplastic Determination of the effect of liquidsISO 7233, Rubber and plastics hoses and hose assemblies Determination of resistance to vacuumISO 7751, Rubber and plastics hoses and hose assemblies Ratios of proof and burst pressure to maximum working pressur
39、eISO 8031, Rubber and plastics hoses and hose assemblies Determination of electrical resistance and conductivityISO 8330, Rubber and plastics hoses and hose assemblies VocabularyISO 10619-1, Rubber and plastics hoses and tubing Measurement of flexibility and stiffness Part 1: Bending tests at ambien
40、t temperatureISO 10619-2:2011, Rubber and plastics hoses and tubing Measurement of flexibility and stiffness Part 2: Bending tests at sub-ambient temperaturesISO 23529, Rubber General procedures for preparing and conditioning test pieces for physical test methodsINTERNATIONAL STANDARD ISO 6808:2014(
41、E) ISO 2014 All rights reserved 1BS EN ISO 6808:2014ISO 6808:2014(E)3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 8330 apply.4 Classification Hose typesTwo types of hose are specified, differentiated by the maximum working pressure as follows: Type
42、1: for light service, having a maximum working pressure of 0,3 MPa (3 bar) at 23 C 2 C and 0,07 MPa (0,7 bar) at 45 C 2 C; Type 2: for normal service, having a maximum working pressure of 0,55 MPa (5,5 bar) through hose size 25 and 0,4 MPa (4 bar) above hose size 25 through hose size 50 at 23 C 2 C.
43、 All sizes have a maximum working pressure of 0,15 MPa (1,5 bar) at 45 C 2 C.5 Construction and materials RequirementsThe hoses shall be as uniform as commercially practicable in colour, opacity, and other physical properties. Flexible thermoplastics materials shall be supported inside the material
44、by a helix of polymeric material of a similar molecular structure. The reinforcing and flexible components of the wall shall be fused and free from visible cracks, porosity, foreign inclusions, or other defects causing the hose to be unserviceable. Hose assemblies shall be electrically bonded betwee
45、n couplings. The hose construction shall include at least two flexible metallic bonding wires (with or without a metallic helix) incorporated in the hose between the cover and the lining and shall be bonded to the metal couplings. Refer to 9.3 for testing and requirements for electrical bonding.The
46、method of ensuring initial electrical continuity shall be the responsibility of the manufacturer and shall be carried out to the satisfaction of the user.6 Dimensions and tolerances6.1 DiameterThe hose size and the internal diameter and tolerances shall be in accordance with the values given in Tabl
47、es 1 and 2, which are in accordance with ISO 1307.Table 1 Diameters and tolerances (Type 1 hoses)Hose sizeInside diameter mmTolerance mm12,5 12,5 0,7516 16 0,7519 19 0,7525 25 1,2531,5 31,5 1,2538 38 1,2550 50 1,563 63 280 80 2100 100 2125 125 2NOTE For smaller or larger diameters, it is recommended
48、 that values be chosen from ISO 1307.2 ISO 2014 All rights reservedBS EN ISO 6808:2014ISO 6808:2014(E)Table 2 Diameters and tolerances (Type 2 hoses)Hose sizeInside diameter mmTolerance mm12,5 12,5 0,7516 16 0,7519 19 0,7525 25 1,2531,5 31,5 1,2538 38 1,2550 50 1,5NOTE For smaller or larger diameter
49、s, it is recommended that values be chosen from ISO 1307.6.2 LengthThe tolerances on cut lengths of hose shall be as given in Table 3.Table 3 Tolerances on cut lengthsHose sizeTolerance on cut length %Up to and including 38 1Over 38 27 Physical properties of finished hoses7.1 Hydrostatic requirements at standard laboratory temperatureWhen tested at standard laboratory temperature as specified in ISO 23529 by the method specified in ISO 14
