1、BRITISH STANDARDBS EN ISO 1179-3:2008Connections for general use and fluid power Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing Part 3: Light-duty (L series) stud ends with sealing by O-ring with retaining ring (types G and H)ICS 23.100.40g49g50g3g38g50g51g60g4
2、4g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58IncorporatingcorrigendumMay 2010National forewordThis British Standard is the UK implementation of EN ISO 1179-3:2008. It
3、is identical to ISO 1179-3:2007.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 reques
4、t 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.BS EN ISO 1179-3:2008This British Standard was published unde
5、r the authority of the Standards Policy and Strategy Committee on 28 February 2009 BSI 2010Amendments/corrigenda issued since publicationDate Comments 31 May 2010 Supersession text deletedISBN 978 0 580 70821 3EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 1179-3April 2008ICS 23.100.40English
6、 VersionConnections for general use and fluid power - Ports and studends with ISO 228-1 threads with elastomeric or metal-to-metalsealing - Part 3: Light-duty (L series) stud ends with sealing byO-ring with retaining ring (types G and H) (ISO 1179-3:2007)Raccordements pour applications gnrales ettra
7、nsmissions hydrauliques et pneumatiques - Orifices etlments mles filetage ISO 228-1 et joint en lastomreou tanchit mtal sur mtal - Partie 3: lments mlessrie lgre (srie L) avec tanchit par joint torique etbague de retenue (types G et H) (ISO 1179-3:2007)Leitungsanschlsse fr allgemeine Anwendung undFl
8、uidtechnik - Einschraublcher und Einschraubzapfen mitGewinde nach ISO 228-1 und Elastomerdichtung odermetallener Dichtkante - Teil 3: Einschraubzapfen mit O-Ring-Dichtung mit Sttzring (Formen G und H), leichteReihe (L) (ISO 1179-3:2007)This European Standard was approved by CEN on 25 March 2008.CEN
9、members are bound to comply 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 applica
10、tion to the CEN 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 translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has t
11、he same status as theofficial 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
12、,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reserv
13、edworldwide for CEN national Members.Ref. No. EN ISO 1179-3:2008: E3 Foreword The text of ISO 1179-3:2007 has been prepared by Technical Committee ISO/TC 131 “Fluid power systems” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 1179-3:2008 by Technical C
14、ommittee ECISS/TC 29 “Steel tubes 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 October 2008, and conflicting national stan
15、dards shall be withdrawn at the latest by October 2008. 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 patent rights. According to the CEN/CENELEC I
16、nternal 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, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg,
17、 Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 1179-3:2007 has been approved by CEN as a EN ISO 1179-3:2008 without any modification. BS EN ISO 1179-3:2008EN ISO 1179-3:2008 (E)Referenc
18、e numberISO 1179-3:2007(E)INTERNATIONAL STANDARD ISO1179-3First edition2007-08-15Connections for general use and fluid power Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing Part 3: Light-duty (L series) stud ends with sealing by O-ring with retaining ring (types
19、 G and H) Raccordements pour applications gnrales et transmissions hydrauliques et pneumatiques Orifices et lments mles filetage ISO 228-1 et joint en lastomre ou tanchit mtal sur mtal Partie 3: lments mles srie lgre (srie L) avec tanchit par joint torique et bague de retenue (types G et H) BS EN IS
20、O 1179-3:2008EN ISO 1179-3:2008 (E)ii BS EN ISO 1179-3:2008EN ISO 1179-3:2008 (E)iiiContents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 2 4 Dimensions 2 5 Requirements 2 6 Sealing . 2 7 Test methods. 3 8 Designation of stud ends. 4 9 Identificatio
21、n statement (reference to this part of ISO 1179). 5 Annex A (normative) Test data form for ISO 1179-1 port and ISO 1179-3 stud ends 12 Bibliography . 13 BS EN ISO 1179-3:2008EN ISO 1179-3:2008 (E)iv Foreword ISO (the International Organization for Standardization) is a worldwide federation of nation
22、al 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 established has the right to be represented on that committee. Internatio
23、nal 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 standardization. International Standards are drafted in accordance with the rule
24、s 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 bodies for voting. Publication as an International Standard requires approval by at l
25、east 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 any or all such patent rights. ISO 1179-3 was prepared by Technical Committee ISO/TC
26、131, Fluid power systems, Subcommittee SC 4, Connectors and similar products and components. This first edition of ISO 1179-3, together with ISO 1179-1, ISO 1179-2 and ISO 1179-4, cancels and replaces ISO 1179:1981 which has been technically revised. ISO 1179 consists of the following parts, under t
27、he general title 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 Part 2: Heavy-duty (S series) and light-duty (L series) stud ends with elastomeric sealing (type E) Part 3: Light-duty (L series)
28、 stud ends with sealing by O-ring with retaining ring (types G and H) Part 4: Stud ends for general use only with metal-to-metal sealing (type B) BS EN ISO 1179-3:2008EN ISO 1179-3:2008 (E)vIntroduction In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under
29、 pressure within a circuit. In general applications, a fluid may be conveyed under pressure. Components are connected through their threaded ports by fluid conductor connectors to tubes and pipes or to hose fittings and hoses. For threaded ports and stud ends specified in new designs in hydraulic fl
30、uid power applications, ISO/TC 131/SC 4 recommends that the ISO 6149 series be used because these International Standards specify ports and stud ends with metric threads and O-ring sealing and because the sub-committee would like to help users by recommending one preferred system. ISO/TC 131/SC 4 fu
31、rther recommends that threaded ports and stud ends in accordance with the ISO 1179 series, ISO 9974 series and ISO 11926 series not be used for new designs in hydraulic fluid power applications; these International Standards will be maintained because they specify ports and stud ends that are curren
32、tly used in hydraulic systems worldwide. For threaded ports and stud ends specified in new designs in pneumatic fluid power applications, ISO/TC 131/SC 4 recommends that ISO 16030 be used, except where products are to interface with ISO 7-1 threads, because the sub-committee would like to help users
33、 by recommending one preferred system. ISO/TC 131/SC 4 further recommends that threaded ports and stud ends in accordance with the ISO 1179 series not be used for new designs in pneumatic fluid power applications; these International Standards will be maintained because they specify ports and stud e
34、nds that are currently used in pneumatic systems worldwide. Significant testing over more than 30 years of use has confirmed the performance requirements of connection ends made from carbon steel. The stud end connections specified in ISO 1179 parts 2, 3 and 4 apply to connectors detailed in ISO 843
35、4 parts 1, 2 and 4. BS EN ISO 1179-3:2008EN ISO 1179-3:2008 (E)blank1Connections for general use and fluid power Ports and stud ends with ISO 228-1 threads with elastomeric or metal-to-metal sealing Part 3: Light-duty (L series) stud ends with sealing by O-ring with retaining ring (types G and H) 1
36、Scope This part of ISO 1179 specifies dimensions, performance requirements and test procedures for non-adjustable and adjustable light-duty (L series) stud ends with ISO 228-1 threads with sealing by O-ring with retaining ring (types G and H, respectively). Light-duty (L series) stud ends in accorda
37、nce with this part of ISO 1179 may be used at working pressures up to 31,5 MPa (315 bar) for non-adjustable stud ends (type G) and up to 20 MPa (200 bar) for adjustable stud ends (type H). The permissible working pressure depends upon size, materials, design, working conditions, application, etc. Co
38、nformance to the dimensional information in this part of ISO 1179 does not guarantee rated performance. Each manufacturer shall perform testing according to the specification contained in this part of ISO 1179 to assure that components made to this part of ISO 1179 comply with the performance rating
39、s. NOTE 1 This part of ISO 1179 applies to connectors detailed in ISO 8434-2. NOTE 2 The introduction of this part of ISO 1179 gives recommendations for ports and stud ends to be used for new designs in hydraulic and pneumatic fluid power applications. 2 Normative references The following referenced
40、 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 any amendments) applies. ISO 228-1, Pipe threads where pressure-tight joints are not made on the t
41、hreads Part 1: Dimensions, tolerances and designation ISO 3601-3:2005, Fluid 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, Fluid power systems and components Vocabulary ISO
42、 19879, Metallic tube connections for fluid power and general use Test methods for hydraulic fluid power connections BS EN ISO 1179-3:2008EN ISO 1179-3:2008 (E)2 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 5598 and the following apply. 3.1 adjust
43、able stud end connector stud end connector that allows for connector orientation through final tightening of the locknut to complete the connection NOTE This type of stud end is typically used on shaped connectors (e.g. tees, crosses and elbows). 3.2 non-adjustable stud end connector stud end connec
44、tor that does not require specific orientation before final tightening of the connection because it is only used on straight connectors 4 Dimensions Light-duty (L series) type G and type H stud ends, locknuts and washers shall conform to the dimensions given in Figures 1 and 2 and Table 1. Hexagonal
45、 tolerances across flats shall be in accordance with ISO 4759-1:2000, product grade C. 5 Requirements 5.1 Working pressure Light-duty (L series) stud ends (types G and H) made of low carbon steel shall be designed for use at the working pressures given in Table 2. 5.2 Performance Light-duty (L serie
46、s) stud ends made of low carbon steel shall meet or exceed the burst and impulse pressures given in Table 2, when tested in accordance with Clause 7 and assembled using the torques listed in Table 6. 5.3 Flatness and fit of adjustable stud end back-up washers The washer shall be clinched to the stud
47、 end with a tight slip fit to an interference fit. The slip fit shall be tight enough so that the washer cannot be shaken loose to cause it to drop from its uppermost position under its own weight. The locknut torque needed to move the washer at the maximum washer interference fit shall not exceed t
48、he torques listed in Table 3. Any washer surface that is out of flatness shall be uniform (i.e. not wavy) and concave with respect to the stud end of type H stud ends only and shall conform to the allowance given in Table 3. 6 Sealing O-rings and retaining rings for use with light-duty (L series) st
49、ud ends shall conform to the dimensions given in Figures 3 and 4 and Tables 4 and 5. Figures 5 and 6 show the correct assembly of the stud end with O-ring and retaining ring. BS EN ISO 1179-3:2008EN ISO 1179-3:2008 (E)37 Test methods 7.1 Burst pressure test (failure pressure test) 7.1.1 Principle Three samples shall be tested to confirm that light-duty (L series) stud ends meet or exceed a ratio of 4:1 between the burst and working pressures. 7.1.2 Materials 7.1.2.1 Test block and stud ends T
