1、BRITISH STANDARDBS EN ISO 8434-1:2007Metallic tube connections for fluid power and general use Part 1: 24 degree cone connectorsICS 23.100.40g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g6
2、0g3g38g50g51g60g53g44g42g43g55g3g47g36g58IncorporatingcorrigendumApril 2009National forewordThis British Standard is the UK implementation of EN ISO 8434-1:2007, incorporating corrigendum April 2009. It is identical to ISO 8434-1:2007. It supersedes BS EN ISO 8434-1:1998 and BS EN ISO 8434-4:2000 wh
3、ich are withdrawn.The UK participation in its preparation was entrusted by Technical Committee MCE/18, Fluid power systems and components, to Subcommittee MCE/18/-/4, Connectors and associated components.A list of organizations represented on this subcommittee can be obtained on request to its secre
4、tary.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.BS EN ISO 8434-1:2007This British Standard was published under the authorit
5、y of the Standards Policy and Strategy Committee on 28 September 2007 BSI 2010Amendments/corrigenda issued since publicationDateComments 28 February 2010 Implementation of CEN corrigendum April 2009; Supersession text in National and EN foreword amendedISBN 978 0 580 68060 1EUROPEAN STANDARDNORME EU
6、ROPENNEEUROPISCHE NORMEN ISO 8434-1September 2007ICS 23.100.40 Supersedes EN ISO 8434-1:1997 English VersionMetallic tube connections for fluid power and general use - Part1: 24 degree cone connectors (ISO 8434-1:2007)Raccordements de tubes mtalliques pour transmissionshydrauliques et pneumatiques e
7、t applications gnrales -Partie 1: Raccords coniques 24 degrs (ISO 8434-1:2007)Metallische Rohrverschraubungen fr Fluidtechnik undallgemeine 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 comp
8、ly with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Managemen
9、t 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theoffi
10、cial versions.CEN members are the national standards bodies of 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, Slove
11、nia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN natio
12、nal Members.Ref. No. EN ISO 8434-1:2007: EIncorporating corrigendum April 20093 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 tubes and fittings for steel tubes“, the
13、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 latest by March 2008. This document su
14、persedes EN ISO 8434-1:1997 and EN ISO 8434-4:2000. 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,
15、 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 EN ISO 8434-1:
16、2007 without any modification. EN ISO 8434-1:2007BS EN ISO 8434-1:2007Reference numberISO 8434-1:2007(E)INTERNATIONAL STANDARD ISO8434-1Second edition2007-09-01Metallic tube connections for fluid power and general use Part 1: 24 cone connectors Raccordements de tubes mtalliques pour transmissions hy
17、drauliques et pneumatiques et applications gnrales Partie 1: Raccords coniques 24 EN ISO 8434-1:2007BS EN ISO 8434-1:2007ii iiiContents Page Foreword iv Introduction v 1 Scope 1 2 Normative references 1 3 Terms and definitions .3 4 Materials .4 4.1 General4 4.2 Connector bodies 5 4.3 Nuts .5 4.4 Cut
18、ting 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 Dimensions.12 9.3 Passage tolerances .12 9.4 Angular tolerances 13 9.5 Contour details.13 9.6 Po
19、rts and stud ends 13 9.7 Stud end sealing 13 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 Corners .14 12 Assembly instruction 14 13 Procurement information15 14 Marking of components
20、 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 (gas) test16 15.8 Overtightening test16 16 Identification statement (reference to this par
21、t of ISO 8434) .16 Bibliography 46 EN ISO 8434-1:2007BS EN ISO 8434-1:2007iv Foreword ISO (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
22、 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 cl
23、osely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical 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. Dr
24、aft International Standards adopted by the technical committees are circulated to the member 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 doc
25、ument may be the subject of patent rights. ISO shall not be held responsible for identifying 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 84
26、34-1 cancels and replaces ISO 8434-1:1994 and ISO 8434-4:1995, of which it constitutes a technical 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-
27、ring face seal connectors Part 6: 60 cone connectors with or without O-ring EN ISO 8434-1:2007BS EN ISO 8434-1:2007vIntroduction In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under pressure within an enclosed circuit. In general applications, a fluid may
28、 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 8434-1:2007BS EN ISO 8434-1:2007blank1Metallic tube connections for fluid power and general use
29、 Part 1: 24 cone 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. Th
30、ese connectors are 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 1
31、2151-2 for 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 to be understood as gua
32、ranteed minimums. 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 requirem
33、ents 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 part of ISO 8434 also s
34、pecifies a performance 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 doc
35、ument (including 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 gen
36、eral purpose metric 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 8434-1:2007BS EN ISO 8434-1:20072 ISO 1179-1, Con
37、nections 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 fluid power Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing Part 2:
38、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 elastomeric or metal-to-metal sealing Part 4: Stud ends for general use only with metal-to-metal sealing
39、 (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, Fluid power systems O-rings Part 3: Quality acceptance criteria ISO 4759-1:2000, Tolerances for fasteners
40、 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 and stud ends with ISO 261 metric threads and O-ring sealing Part 1: Ports with truncated housing for
41、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 requirements for heavy-duty (5 series) stud ends ISO 6149-3, Connections for hydraulic fluid power and general
42、 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 artificial atmospheres Salt spray tests ISO 9974-1, Connections for general use and fluid power Ports and
43、 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 with elastomeric or metal-to-metal sealing Part 2: Stud ends with elastomeric sealing (type E) ISO 9974-3
44、, 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, Connections for hydraulic fluid power and general use Hose fittings Part 2: Hose fittings with ISO 843
45、4-1 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 8434-1:2007BS EN ISO 8434-1:200733 Terms and definitions For the purposes of this document, the terms and definit
46、ions 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 5598:1985, definition 5.2.2. 3.2 fastening thread terminal thread of a complete connector 3.3 run two principal, axia
47、lly aligned outlets of a tee or cross 3.4 branch side outlet(s) of a tee or cross 3.5 chamfer removal of a conical portion at the entrance of a thread, used to assist assembly and prevent damage to the start of the thread 3.6 face-to-face dimension distance between the two parallel faces of axially
48、aligned outlets of a connector 3.7 face-to-centre dimension distance from the face of an outlet to the central axis of an angularly disposed outlet 3.8 assembly torque torque to be applied in order to achieve a satisfactory final assembly 3.9 maximum working pressure highest pressure at which the sy
49、stem or part of the system is intended to operate in steady-state conditions EN ISO 8434-1:2007BS EN ISO 8434-1:20074 4 Materials 4.1 General Figures 1 and 2 show the cross-sections and component parts of typical 24 cone connectors. Key 1 body 2 nut 3 cutting ring Figure 1 Cross-section of typical 24 cone connector with cutting ring Key 1 body 2 nut 3 DKO-end (including O-ring) Figure 2 Cross-section of typical 24 cone connector with O-ring seal cone (DKO) end EN ISO 8
