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1、BRITISH STANDARD BS EN ISO 8434-1:2007 Metallic tube connections for fluid power and general use Part 1: 24 degree cone connectors The European Standard EN ISO 8434-1:2007 has the status of a British Standard ICS 23.100.40 ? Licensed Copy: London South Bank University, London South Bank University,
2、Fri Oct 05 02:28:14 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN ISO 8434-1:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 September 2007 BSI 2007 ISBN 978 0 580 55361 5 National foreword This British Standard is the UK implement
3、ation of EN ISO 8434-1:2007. It supersedes BS EN ISO 8434-1:1998 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee MCE/18, Fluid power systems and components, to Panel MCE/18/-/4, Connectors and associated components. A list of organizations represented
4、 on this 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. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments iss
5、ued since publication Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:28:14 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8434-1 September 2007 ICS 23.100.40Supersedes EN ISO 8434-1:1
6、997 English Version Metallic tube connections for fluid power and general use - Part 1: 24 degree cone connectors (ISO 8434-1:2007) Raccordements de tubes mtalliques pour transmissions hydrauliques et pneumatiques et applications gnrales - Partie 1: Raccords coniques 24 degrs (ISO 8434- 1:2007) Meta
7、llische Rohrverschraubungen fr Fluidtechnik und allgemeine Anwendung - Teil 1: 24 grad- Rohrverschraubungen (ISO/FDIS 8434-1:2007) This European Standard was approved by CEN on 11 August 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions fo
8、r 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 Management Centre or to any CEN member. This European Standard exists in three offici
9、al 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 Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria,
10、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 United Kingdom. EUROPEAN COMMITTEE
11、 FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8434-1:2007: E Licensed Copy: London
12、South Bank University, London South Bank University, Fri Oct 05 02:28:14 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 Foreword This document (EN ISO 8434-1:2007) has been prepared by Technical Committee ISO/TC 131 “Fluid power systems“ in collaboration with Technical Committee ECISS/TC 29 “Steel tub
13、es and fittings for steel tubes“, 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 March 2008, and conflicting national standards shall be withdrawn at the
14、latest by March 2008. This document supersedes EN ISO 8434-1:1997. 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, Cyprus, Czech Republic, Denmark, Estonia, F
15、inland, 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. Endorsement notice The text of ISO 8434-1:2007 has been approved by CEN as a
16、 EN ISO 8434-1:2007 without any modification. EN ISO 8434-1:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:28:14 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Reference number ISO 8434-1:2007(E) INTERNATIONAL STANDARD ISO 8434-1 Second edition 2007-09-01 M
17、etallic tube connections for fluid power and general use Part 1: 24 cone connectors Raccordements de tubes mtalliques pour transmissions hydrauliques et pneumatiques et applications gnrales Partie 1: Raccords coniques 24 EN ISO 8434-1:2007 Licensed Copy: London South Bank University, London South Ba
18、nk University, Fri Oct 05 02:28:14 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ii Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:28:14 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iii Contents Page Foreword iv Introduction v 1 Scope 1 2 Normative references1 3
19、Terms and definitions .3 4 Materials .4 4.1 General4 4.2 Connector bodies 5 4.3 Nuts.5 4.4 Cutting rings.5 4.5 O-rings 5 5 Pressure/temperature requirements5 6 Designation of connectors .10 7 Requirements for tubes 12 8 Across-flats dimensions and tolerances 12 9 Design.12 9.1 Connectors.12 9.2 Dime
20、nsions.12 9.3 Passage tolerances .12 9.4 Angular tolerances 13 9.5 Contour details.13 9.6 Ports and stud ends 13 9.7 Stud end sealing13 10 Screw threads 13 10.1 Cone ends and nuts.13 10.2 Stud ends (connection ends) .13 11 Manufacture13 11.1 Construction.13 11.2 Workmanship.14 11.3 Finish 14 11.4 Co
21、rners .14 12 Assembly instruction 14 13 Procurement information15 14 Marking of components 15 15 Performance and qualification test15 15.1 General15 15.2 Repeated assembly test15 15.3 Proof test 15 15.4 Burst pressure test15 15.5 Cyclic endurance (impulse) test.15 15.6 Vibration test15 15.7 Leakage
22、(gas) test16 15.8 Overtightening test16 16 Identification statement (reference to this part of ISO 8434) .16 Bibliography46 EN ISO 8434-1:2007 Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:28:14 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iv Foreword ISO (th
23、e 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 member body interested in a subject for which a technical committ
24、ee 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 Electrotechnical Commission (IEC) on all matters of electrotechn
25、ical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member
26、bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. 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
27、any or all such patent rights. ISO 8434-1 was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 4, Connectors and similar products and components. This second edition of ISO 8434-1 cancels and replaces ISO 8434-1:1994 and ISO 8434-4:1995, of which it constitutes a tech
28、nical revision. ISO 8434 consists of the following parts, under the general title Metallic tube connections for fluid power and general use: Part 1: 24 cone connectors Part 2: 37 flared connectors Part 3: O-ring face seal connectors Part 6: 60 cone connectors with or without O-ring EN ISO 8434-1:200
29、7 Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:28:14 GMT+00:00 2007, Uncontrolled Copy, (c) BSI v Introduction In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under pressure within an enclosed circuit. In general
30、 applications, 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. EN ISO 8434-1:2007 Licensed Copy: London South Bank University, London South
31、 Bank University, Fri Oct 05 02:28:14 GMT+00:00 2007, Uncontrolled Copy, (c) BSI blank Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:28:14 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 1 Metallic tube connections for fluid power and general use Part 1: 24 cone
32、 connectors 1 Scope This part of ISO 8434 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 42 mm inclusive. These connectors a
33、re for use in fluid power and general applications within the limits of pressure and temperature specified in this part of ISO 8434. 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. (See ISO 12151-2 for relat
34、ed 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 to be understood as guaranteed minimums
35、. For every application, sufficient testing will need 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. Where the requirements of the appl
36、ication 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 part of ISO 8434 also specifies a perfo
37、rmance and qualification test for these connectors. 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
38、 any amendments) applies. ISO 48, Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD) ISO 228-1:2000, Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation ISO 261, ISO general purpose met
39、ric screw threads General plan ISO 965-1:1998, ISO general-purpose metric screw threads Tolerances Part 1: Principles and basic data ISO 1127, Stainless steel tubes Dimensions, tolerances and conventional masses per unit length EN ISO 8434-1:2007 Licensed Copy: London South Bank University, London S
40、outh Bank University, Fri Oct 05 02:28:14 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 2 ISO 1179-1, 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 ports ISO 1179-2, Connections for general use and flui
41、d power Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing Part 2: Heavy-duty (S series) and light-duty (L series) stud ends with elastomeric sealing (type E) ISO 1179-4, Connections for general use and fluid power Ports and stud ends with ISO 228-1 threads with el
42、astomeric 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 delivery ISO 3305, Plain end welded precision steel tubes Technical conditions for delivery ISO 3601-3:2005, Flu
43、id power systems O-rings Part 3: Quality acceptance criteria ISO 4759-1:2000, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C ISO 5598:1985, Fluid power systems and components Vocabulary ISO 6149-1, Connections for hydraulic fluid power and general use Ports
44、and stud ends with ISO 261 metric threads and O-ring sealing Part 1: Ports with truncated housing for O-ring seal ISO 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 requirem
45、ents for heavy- duty (5 series) stud ends ISO 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 ends ISO 9227, Corrosion tests in ar
46、tificial atmospheres Salt spray tests ISO 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 ports ISO 9974-2, Connections for general use and fluid power Ports and stud ends with ISO 261 threads wi
47、th elastomeric 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 12151-2,
48、 Connections for hydraulic fluid power and general use Hose fittings Part 2: Hose fittings with ISO 8434-1 and ISO 8434-4 24 cone connector ends with O-rings ISO 19879:2005, Metallic tube connections for fluid power and general use Test methods for hydraulic fluid power connections EN ISO 8434-1:200
49、7 Licensed Copy: London South Bank University, London South Bank University, Fri Oct 05 02:28:14 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 5598 and the following apply. 3.1 connector connection leak-proof device used to connect pipelines (conductors) to one another or to equipment NOTE Adapted from ISO 55