1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Metallic tube connections for fluid power and general usePart 1: 24 cone connectors (ISO 8434-1:2018)BS EN ISO 8434-1:2018National forewordThis British Standard is the UK implementation of EN ISO 8434-1:2018. It superse
2、des BS EN ISO 8434-1:2007, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee MCE/18/-/4, Connectors and associated components.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purp
3、ort to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 84336 5ICS 23.100.40Compliance with a British Standard cannot confer immunity from legal obligati
4、ons.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 8434-1:2018EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 84341August 2018I
5、CS 23.100.40 Supersedes EN ISO 8434-1:2007EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN ISO 8434-1:2018: EAll rights of exploitation in any form and by any means
6、reserved worldwide for CEN national MembersMetallic tube connections for fluid power and general use - Part 1: 24 cone connectors (ISO 8434-1:2018)Raccordements de tubes mtalliques pour transmissions hydrauliques et pneumatiques et applications gnrales - Partie 1: Raccords coniques 24 (ISO 8434-1:20
7、18)Metallische Rohrverschraubungen fr Fluidtechnik und allgemeine Anwendung - Teil 1: Verschraubungen mit 24-Konus (ISO 8434-1:2018)This European Standard was approved by CEN on 4 July 2018.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for g
8、iving 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 of
9、ficial 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 o
10、f Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia
11、, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN ISO 8434-1:2018 (E)European forewordThis document (EN ISO 8434-1:2018) has been prepared by Technical Committee ISO/TC 131 “Fluid power systems“ in collaboration with Technical Committee ECISS/TC 110 “Steel tubes, and iron and
12、 steel fittings” the secretariat of which is held by UNI.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 February 2019, and conflicting national standards shall be withdrawn at the latest by Febru
13、ary 2019.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.This document supersedes EN ISO 8434-1:2007.According to the CEN-CENELEC Internal Regulations
14、, the 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, L
15、atvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.Endorsement noticeThe text of ISO 8434-1:2018 has been approved by CEN as EN ISO 8434-1:2018 without any modification.iiBS EN ISO
16、 8434-1:2018ISO 8434-1:2018Foreword vIntroduction vi1 Scope . 12 Normative references 13 Terms and definitions .24 Materials . 34.1 General . 34.2 Connector bodies 44.3 Nuts 44.4 Cutting rings 54.5 O-rings 55 Pressure/temperature requirements 56 Designation of connectors 97 Requirements for tubes .1
17、28 Across-flats dimensions and tolerances .129 Design .129.1 Connectors . 129.2 Dimensions 129.3 Passage tolerances 139.4 Angular tolerances 139.5 Contour details . 139.6 Ports and stud ends . 139.7 Stud end sealing 1310 Screw threads .1310.1 Cone ends and nuts 1310.2 Stud ends (connection ends) . 1
18、311 Manufacture .1311.1 Construction . 1311.2 Workmanship 1411.3 Finish 1411.4 Corners . 1412 Assembly instruction 1413 Procurement information 1414 Marking of components .1515 Performance and qualification test .1515.1 General 1515.2 Repeated assembly test 1515.3 Proof test . 1515.4 Burst pressure
19、test . 1515.5 Cyclic endurance (impulse) test 1515.6 Vibration test . 1515.7 Leakage (gas) test 1515.8 Overtightening test . 1615.8.1 Connectors with cutting rings . 1615.8.2 Connectors with O-ring seal cone (DKO) .1615.9 Vacuum test . 1616 Identification statement (reference to this document) 16 IS
20、O 2018 All rights reserved iiiContents PageBS EN ISO 8434-1:2018ISO 8434-1:2018Annex A (normative) Assembly instructions for 24 cone connectors using cutting ring conforming to ISO 8434-1 45Bibliography .51iv ISO 2018 All rights reservedBS EN ISO 8434-1:2018ISO 8434-1:2018ForewordISO (the Internatio
21、nal 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 member body interested in a subject for which a technical committee has been
22、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 Electrotechnical Commission (IEC) on all matters of electrotechnical standar
23、dization. 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 of ISO documents should be noted. This document was drafted in accordanc
24、e 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 held responsible for identifying any or all such patent rights. Details of
25、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 given for the convenience of users and does not constitute an endorseme
26、nt. For an explanation on the voluntary nature of standards, 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 to Trade (TBT) see the following URL
27、: www.iso.org/iso/foreword.html.This document was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 4, Connectors and similar products and components.This third edition cancels and replaces the second edition (ISO 8434-1:2007), which has been technically revised.A list
28、 of all the parts in the ISO 8434 series, can be found on the ISO website. ISO 2018 All rights reserved vBS EN ISO 8434-1:2018ISO 8434-1:2018IntroductionIn fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under pressure within an enclosed circuit. In general a
29、pplications, a fluid may be conveyed under pressure.Components may be connected through their ports by connections (connectors) and conductors (tubes and hoses). Tubes are rigid conductors; hoses are flexible conductors.vi ISO 2018 All rights reservedBS EN ISO 8434-1:2018Metallic tube connections fo
30、r fluid power and general use Part 1: 24 cone connectors1 ScopeThis document specifies the general and dimensional requirements for 24 cone connectors using cutting ring and O-ring seal cone (referred to as DKO) suitable for use with ferrous and non-ferrous tubes with outside diameters from 4 mm to
31、42 mm inclusive. These connectors are for use in fluid power and general applications within the limits of pressure and temperature specified in this document.They are intended for the connection of plain end tubes and hose fittings to ports in accordance with ISO 6149-1, ISO 1179-1 and ISO 9974-1.
32、(See ISO 12151-2 for a related hose fitting specification.)These connectors provide full-flow connections in hydraulic systems operating to the working pressures shown in Table 1. Because many factors influence the pressure at which a system performs satisfactorily, these values are not intended to
33、be understood as guaranteed minimums. For every application, sufficient testing is meant to be conducted and reviewed by both the user and manufacturer to ensure that required performance levels are met.NOTE 1 For new designs in hydraulic fluid power applications, see the requirements given in 9.6.
34、Where the requirements of the application allow for the use of elastomeric seals, connector designs that conform to International Standards and incorporate elastomeric sealing are preferred.NOTE 2 For use under conditions outside the pressure and/or temperature limits specified, see 5.4.This documen
35、t also specifies a performance and qualification test for these connectors.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 the edition cited applies. For un
36、dated references, the latest edition of the referenced document (including any amendments) applies.ISO 48, Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD)ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads Part 1: Dime
37、nsions, tolerances and designationISO 724, ISO general-purpose metric screw threads Basic dimensionsISO 965-1, ISO general purpose metric screw threads Tolerances Part 1: Principles and basic dataISO 1127, Stainless steel tubes Dimensions, tolerances and conventional masses per unit lengthISO 1179-1
38、, Connections for general use and fluid power Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing Part 1: Threaded portsISO 1179-2, Connections for general use and fluid power Ports and stud ends with ISO 228 -1 threads with elastomeric or metal-to-metal sealing Par
39、t 2: Heavy-duty (S series) and light-duty (L series) stud ends with elastomeric sealing (type E)INTERNATIONAL STANDARD ISO 8434-1:2018 ISO 2018 All rights reserved 1BS EN ISO 8434-1:2018ISO 8434-1:2018ISO 1179-4, Connections for general use and fluid power Ports and stud ends with ISO 228-1 threads
40、with elastomeric or metal-to-metal sealing Part 4: Stud ends for general use only with metal-to-metal sealing (type B)ISO 3304, Plain end seamless precision steel tubes Technical conditions for deliveryISO 3305, Plain end welded precision steel tubes Technical conditions for deliveryISO 3601-3, Flui
41、d power systems O-rings Part 3: Quality acceptance criteriaISO 4759-1:2000, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and CISO 5598:2008, Fluid power systems and components VocabularyISO 6149-1, Connections for hydraulic fluid power and general use Ports and
42、stud ends with ISO 261 metric threads and O-ring sealing Part 1: Ports with truncated housing for O-ring sealISO 6149-2, Connections for hydraulic fluid power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Part 2: Dimensions, design, test methods and requirements
43、for heavy-duty (S series) stud endsISO 6149-3, Connections for hydraulic fluid power and general use Ports and stud ends with ISO 261 metric threads and O-ring sealing Part 3: Dimensions, design, test methods and requirements for light-duty (L series) stud endsISO 9227, Corrosion tests in artificial
44、 atmospheres Salt spray testsISO 9974-1, Connections for general use and fluid power Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing Part 1: Threaded portsISO 9974-2, Connections for general use and fluid power Ports and stud ends with ISO 261 threads with elastom
45、eric or metal-to-metal sealing Part 2: Stud ends with elastomeric sealing (type E)ISO 9974-3, Connections for general use and fluid power Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing Part 3: Stud ends with metal-to-metal sealing (type B)ISO 19879, Metallic tube
46、 connections for fluid power and general use Test methods for hydraulic fluid power connections3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 5598 and the following apply.ISO and IEC maintain terminological databases for use in standardization at the
47、 following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp3.1connectordevice that connects tubes, hoses or pipes to each other or to componentsSOURCE: ISO 5598:2008, 3.2.1223.2connectionassembly of parts belonging
48、 to piping2 ISO 2018 All rights reservedBS EN ISO 8434-1:2018ISO 8434-1:20183.3fastening threadterminal thread of a complete connector3.4runtwo principal, axially aligned outlets of a tee connector or cross connectorSOURCE: ISO 5598:2008, 3.2.6323.5branchside outlet(s) of a tee connector or cross co
49、nnectorSOURCE: ISO 5598:2008, 3.2.813.6chamferremoval of a conical portion at the entrance of a thread, used to assist assembly and prevent damage to the start of the thread3.7face-to-face dimensiondistance between the two parallel faces of axially aligned outlets of a connector3.8face-to-centre dimensiondistance from the face of an outlet to the central axis of an angularly disposed outlet3.9assembly torquetorque required to achieve a satisfactory final connectionSOURCE:
