1、August 2008DEUTSCHE NORM English price group 11No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 23.100.40!$Q3“1461691ww
2、w.din.deDDIN EN ISO 1179-3Connections for general use and fluid power Ports and stud ends with ISO 228-1 threads with elastomeric ormetal-to-metal sealing Part 3: Light-duty (L series) stud ends with sealing by O-ring withretaining ring (types G and H) (ISO 1179-3:2007)English version of DIN EN ISO
3、1179-3:2008-08Leitungsanschlsse fr allgemeine Anwendung und Fluidtechnik Einschraublcher und Einschraubzapfen mit Gewinde nach ISO 228-1 undElastomerdichtung oder metallener Dichtkante Teil 3: Einschraubzapfen mit O-Ring-Dichtung mit Sttzring (Formen G und H), leichteReihe (L) (ISO 1179-3:2007)Engli
4、sche Fassung DIN EN ISO 1179-3:2008-08www.beuth.deDocument comprises 19 pagesDIN EN ISO 1179-3:2008-08 2 National foreword This standard has been prepared by Technical Committee ISO/TC 131 “Fluid power systems”, Subcommittee SC 4 “Connectors and similar products and components” and has been taken ov
5、er as EN ISO 1179-3:2008 by Technical Committee ECISS/TC 29 “Steel tubes and fittings for steel tubes” (Secretariat: UNI, Italy). The responsible German body involved in its preparation was the Normenausschuss Rohrleitungen und Dampfkesselanlagen (Piping and Boiler Plant Standards Committee), Techni
6、cal Committee NA 082-00-07 AA Rohrverschraubungen. 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 the general title Connections for general u
7、se 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) stud ends with sealing by O-ring with ret
8、aining ring (types G and H) Part 4: Stud ends for general use only with metal-to-metal sealing (type B) The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are as follows: ISO 228-1 DIN EN ISO 228-1 ISO 4759-1:2000 DIN EN ISO 4759-1:2001-04 ISO 5598 E DIN
9、 ISO 5598 ISO 19879 DIN EN ISO 19879 National Annex NA (informative) Bibliography DIN EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation DIN EN ISO 4759-1:2001-04, Tolerances for fasteners Part 1: Bolts, screws, studs and
10、 nuts; Product grades A, B and C E DIN ISO 5598, Fluid power systems and components Vocabulary DIN EN ISO 19879, Metallic tube connections for fluid power and general use Test methods for hydraulic fluid power connections EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 1179-3April 2008ICS 23.1
11、00.40English 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 g
12、nrales ettransmissions 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 Anw
13、endung undFluidtechnik - 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 Mar
14、ch 2008.CEN 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 obtaine
15、d on application 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
16、Centre has the 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, Pola
17、nd, Portugal,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
18、means reservedworldwide for CEN national Members.Ref. No. EN ISO 1179-3:2008: E2 DIN EN ISO 1179-3:2008-08 EN ISO 1179-3:2008 (E) Contents Page Foreword .3 Introduction.4 1 Scope5 2 Normative references5 3 Terms and definitions .6 4 Dimensions 6 5 Requirements.6 6 Sealing6 7 Test methods .7 8 Design
19、ation of stud ends8 9 Identification statement (reference to this part of ISO 1179) .9 Annex A (normative) Test data form for ISO 1179-1 port and ISO 1179-3 stud ends 16 Bibliography17 Foreword 3 DIN EN ISO 1179-3:2008-08 EN ISO 1179-3:2008 (E) The text of ISO 1179-3:2007 has been prepared by Techni
20、cal 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 Committee ECISS/TC 29 “Steel tubes and fittings for steel tubes” the secretariat of which is held by UNI. This European Standard shall
21、 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 standards shall be withdrawn at the latest by October 2008. Attention is drawn to the possibility that some of the elements of this docum
22、ent 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 Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: A
23、ustria, 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 the United Kingdom. Endors
24、ement notice The text of ISO 1179-3:2007 has been approved by CEN as a EN ISO 1179-3:2008 without any modification. Introduction In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under pressure within a circuit. In general applications, a fluid may be convey
25、ed 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 fluid power applications, ISO/TC 131/SC 4 recommends that the ISO 6149 serie
26、s 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 further recommends that threaded ports and stud ends in accordance with the
27、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 currently used in hydraulic systems worldwide. For threaded ports and stud ends
28、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 by recommending one preferred system. ISO/TC 131/SC 4 further recommends
29、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 ends that are currently used in pneumatic systems worldwide. Significant te
30、sting 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 8434 parts 1, 2 and 4. 4 DIN EN ISO 1179-3:2008-08 EN ISO 1179-3:2008 (E) 1 S
31、cope 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 accordan
32、ce 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. Con
33、formance 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 ratings
34、. 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
35、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 th
36、reads 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
37、19879, Metallic tube connections for fluid power and general use Test methods for hydraulic fluid power connections 5 EN ISO 1179-3:2008 (E) DIN EN ISO 1179-3:2008-08 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 5598 and the following apply. 3.1 a
38、djustable 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 c
39、onnector 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. Hexa
40、gonal 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
41、series) 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
42、 stud 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 exc
43、eed the 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 serie
44、s) stud 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. 6 DIN EN ISO 1179-3:2008-08 EN ISO 1179-3:2008 (E) 7 Test methods 7.1 Burst pressure test (failure pressure test) 7.1.1
45、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 Test blocks shall be in accordance with the requirements specified in ISO 19879. Stud ends s
46、hall be made from low carbon steel and be plated. 7.1.2.2 Test seals Unless otherwise specified, test seals shall meet the requirements specified in ISO 19879. Seals shall conform to the dimensions given in Tables 4 and 5, and O-rings shall meet or exceed the quality requirement grade N in ISO 3601-
47、3:2005. 7.1.3 Procedure 7.1.3.1 Thread lubrication For testing only, threads and contact surfaces shall be lubricated in accordance with the requirements of ISO 19879. 7.1.3.2 Stud end torque Stud ends shall be tested after application of the torques given in Table 6. Adjustable stud end locknut tor
48、ques shall be applied after the stud end has been backed out one full turn from finger tight position, to correctly test the worst possible actual assembly conditions. 7.1.3.3 Pressure rise rate The rate of pressure rise shall be in accordance with the requirements of ISO 19879. 7.2 Cyclic endurance
49、 (impulse) test 7.2.1 Principle Six samples, when tested at their respective impulse pressures, shall pass a cyclic endurance test of 1 000 000 cycles without leakage or component failure. 7.2.2 Materials Use the same materials as specified in 7.1.2. 7 EN ISO 1179-3:2008 (E) DIN EN ISO 1179-3:2008-08 7.2.3 Procedure 7.2.3.1 Thread lubrication Apply lubricant as specified in 7.1.3.1. 7.2.3.2 Stud end torques Apply torque as specified in 7.1.3.2. 7.2.3.3 Cycle and pressure rise rate The cycle rate shall be in accor
