1、BS EN ISO 7751:2016Rubber and plastics hoses and hose assemblies Ratios of proof and burst pressure to maximum working pressure( I S O 7 7 5 1 : 2 0 1 6 )BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 7751:2016 BRITISH STANDARDNational forewordThis British
2、 Standard is the UK implementation of EN ISO 7751:2016. It supersedes BS EN ISO 7751:1997+A1:2011 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/66, Rubber and plastics tubing, hoses and hose assemblies.A list of organizations represented on this
3、committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 89088 8 ICS 2
4、3.040.70 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STAN
5、DARD NORME EUROPENNE EUROPISCHE NORM EN ISO 7751 November 2016 ICS 23.040.70 Supersedes EN ISO 7751:1997English Version Rubber and plastics hoses and hose assemblies - Ratios of proof and burst pressure to maximum working pressure (ISO 7751:2016) Tuyaux et flexibles en caoutchouc et en plastique - R
6、apports des pressions dpreuve et de rupture la pression maximale de service (ISO 7751:2016) Gummi- und Kunststoffschluche und -schlauchleitungen - Verhltnisse von Prf- und Berstdruck zum Betriebsdruck (ISO 7751:2016) This European Standard was approved by CEN on 9 October 2016. CEN members are bound
7、 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
8、-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 ha
9、s 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, Lu
10、xembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brus
11、sels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 7751:2016 EBS EN ISO 7751:2016EN ISO 7751:2016 (E) 3 European foreword This document (EN ISO 7751:2016) has been prepared by Technical Committee ISO/TC 45 “Rubber and ru
12、bber products “ in collaboration with 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
13、latest by May 2017, and conflicting national standards shall be withdrawn at the latest by May 2017. 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
14、patent rights. This document supersedes EN ISO 7751:1997. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, F
15、inland, 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, Switzerland, Turkey and the United Kingdom. Endorsement notice The text o
16、f ISO 7751:2016 has been approved by CEN as EN ISO 7751:2016 without any modification. BS EN ISO 7751:2016ISO 7751:2016(E)Foreword iv1 Scope . 12 Normative references 13 Terms and definitions . 14 Proof pressure ratio 15 Minimum burst pressure ratio 1Bibliography 3 ISO 2016 All rights reserved iiiCo
17、ntents PageBS EN ISO 7751:2016ISO 7751:2016(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 ISO technical committees. Each memb
18、er body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Ele
19、ctrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types
20、of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be hel
21、d responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information
22、 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 World Trade Organization (WTO) principles in the Technical Barriers
23、to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The 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 7751:1991), which
24、 has been technically revised. It also incorporates the Amendment ISO 7751:1991/Amd.1:2011.The main changes are as follows: the term “design working pressure” has been replaced by “maximum working pressure” throughout the text in accordance with ISO 7751:1991/Amd.1:2011; a new category (hoses for de
25、livery of cement, concrete, plaster and grout) has been added.iv ISO 2016 All rights reservedBS EN ISO 7751:2016INTERNATIONAL STANDARD ISO 7751:2016(E)Rubber and plastics hoses and hose assemblies Ratios of proof and burst pressure to maximum working pressure1 ScopeThis document specifies ratios of
26、proof pressure and minimum burst pressure to maximum working pressure for various categories of hose service.2 Normative referencesThe 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
27、 the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 1402, Rubber and plastics hoses and hose assemblies Hydrostatic testing3 Terms and definitionsFor the purposes of this document, the terms and definitions given in
28、 ISO 8330 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/obp4 Proof pressure ratioThe methods and procedures to perform
29、the proof tests are specified in ISO 1402.The ratio of proof pressure to maximum working pressure shall, unless otherwise specified, in the relevant hose/hose assembly product standard, be in accordance with Table 1, which states the pressures for guidance only. When the hose product standard specif
30、ies different pressures, these pressures shall be used when testing the hoses.5 Minimum burst pressure ratioThe methods and procedures to perform the burst tests are specified in ISO 1402.The ratio of minimum burst pressure to maximum working pressure shall, unless otherwise specified, in the releva
31、nt hose/hose assembly product standard, be in accordance with Table 1. ISO 2016 All rights reserved 1BS EN ISO 7751:2016ISO 7751:2016(E)Table 1 Ratios of proof and minimum burst pressure to maximum working pressureNo.Type of service (for guidance only)Ratio of proof pressure to maximum working pres-
32、sureRatio of minimum burst pressure to maximum working pressure1Water hose, maximum working pressure 1 MPa (10 bar)1,5 3,02Hose for all other liquids, solid materials suspended in liquids or air, and water hose, maximum working pressure more than or equal to 1 MPa (10 bar)2,0 4,03 Hose for compresse
33、d air and other gases 2,0 4,04Hose for liquid media that change into the gaseous state when subjected to a reduction in pressure, i.e. released to atmosphere2,5 5,05 Steam hose 5,0 10,06 Jetting hose 1,5 2,57Hoses for the delivery of cement, concrete, plaster and grout1,5 2,0NOTE The ratios of proof
34、 and minimum burst pressures stated in Table 1 are intended to be used for guidance only, when the hose product standard concerned does not specify these pressures for the various types and classes of hoses and hose assemblies covered by that standard.2 ISO 2016 All rights reservedBS EN ISO 7751:201
35、6ISO 7751:2016(E)BibliographyISO 8330, Rubber and plastics hoses and hose assemblies Vocabulary ISO 2016 All rights reserved 3This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publication
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