1、August 2008DEUTSCHE NORM English price group 9No 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!$Q2T“1461549ww
2、w.din.deDDIN EN ISO 1179-4Connections for general use and fluid power Ports and stud ends with ISO 228-1 threads with elastomeric ormetal-to-metal sealing Part 4: Stud ends for general use only with metal-to-metal sealing(type B) (ISO 1179-4:2007)English version of DIN EN ISO 1179-4:2008-08Leitungsa
3、nschlsse fr allgemeine Anwendung und Fluidtechnik Einschraublcher und Einschraubzapfen mit Gewinde nach ISO 228-1 undElastomerdichtung oder metallener Dichtkante Teil 4: Einschraubzapfen mit metallener Dichtkante (Form B), nur fr allgemeineAnwendung (ISO 1179-4:2007)Englische Fassung DIN EN ISO 1179
4、-4:2008-08www.beuth.deDocument comprises 14 pagesDIN EN ISO 1179-4:2008-08 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 over as EN ISO 1179-4:2008 by
5、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), Technical Committee NA 082-00-07 A
6、A Rohrverschraubungen. This first edition of ISO 1179-4, together with ISO 1179-1, ISO 1179-2 and ISO 1179-3, 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 use and fluid power Ports and
7、 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 retaining ring (types G and H)
8、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 ISO 5598 ISO 19879 DIN EN I
9、SO 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 nuts; Product grades A, B a
10、nd 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 (ISO 4759-1:2000)EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 1179-4April 2008ICS 23.100.40Englis
11、h VersionConnections for general use and fluid power - Ports and studends with ISO 228-1 threads with elastomeric or metal-to-metalsealing - Part 4: Stud ends for general use only with metal-to-metal sealing (type B) (ISO 1179-4:2007)Raccordements pour applications gnrales ettransmissions hydrauliqu
12、es et pneumatiques - Orifices etlments mles filetage ISO 228-1 et joint en lastomreou tanchit mtal sur mtal - Partie 4: lments mlespour applications gnrales uniquement avec tanchitmtal sur mtal (type B) (ISO 1179-4:2007)Leitungsanschlsse fr allgemeine Anwendung undFluidtechnik - Einschraublcher und
13、Einschraubzapfen mitGewinde nach ISO 228-1 und Elastomerdichtung odermetallener Dichtkante - Teil 4: Einschraubzapfen mitmetallener Dichtkante (Form B), nur fr allgemeineAnwendung (ISO 1179-4:2007)This European Standard was approved by CEN on 25 March 2008.CEN members are bound to comply with the CE
14、N/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 Management Centre or to
15、 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 theofficial versions.
16、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, Slovenia, Spain, Sw
17、eden, 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 reservedworldwide for CEN national Members.Re
18、f. No. EN ISO 1179-4:2008: E2 Contents Page DIN EN ISO 1179-4:2008-08 EN ISO 1179-4:2008 (E) Foreword .3 Introduction.4 1 Scope5 2 Normative references5 3 Terms and definitions .6 4 Dimensions 6 5 Requirements.6 5.1 Working pressure6 5.2 Performance.6 6 Metal-to-metal sealing.6 7 Test methods .6 7.1
19、 Burst pressure test (failure pressure test)6 7.1.1 Principle .6 7.1.2 Materials Test block and stud ends6 7.1.3 Procedure.6 7.2 Cyclic endurance (impulse) test 7 7.2.1 Principle .7 7.2.2 Materials .7 7.2.3 Procedure.7 7.3 Test report7 7.4 Re-use of components7 8 Designation of stud ends7 9 Identifi
20、cation statement (reference to this part of ISO 1179) .8 Annex A (normative) Test data form for ISO 1179-1 port and ISO 1179-4 stud ends 11 Bibliography12 Foreword 3 The text of ISO 1179-4:2007 has been prepared by Technical Committee ISO/TC 131 “Fluid power systems” of the International Organizatio
21、n for Standardization (ISO) and has been taken over as EN ISO 1179-4:2008 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 be given the status of a national standard, either by publication of an identi
22、cal 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 document may be the subject of patent rights. CEN and/or CENELEC shall not be held r
23、esponsible 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: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, F
24、rance, 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 1179-4:2007 has been approved by CEN as a EN ISO 1
25、179-4:2008 without any modification. EN ISO 1179-4:2008 (E) DIN EN ISO 1179-4:2008-08 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 conveyed under pressure. Components
26、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 series be used because these Intern
27、ational 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 ISO 1179 series, ISO 9974 seri
28、es 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 specified in new designs in pn
29、eumatic 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 that threaded ports and stud e
30、nds 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 testing over more than 30 years
31、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 1179-4:2008-08 EN ISO 1179-4:2008 (E) 1 Scope This part of ISO 1179 spe
32、cifies dimensions, performance requirements and test procedures for stud ends with ISO 228-1 threads and metal-to-metal sealing for general use only. These stud ends should not be used for leak-free hydraulic fluid power applications. Stud ends in accordance with this part of ISO 1179 may be used at
33、 working pressures up to 40 MPa (400 bar) for the S series, up to 25 MPa (250 bar) for the L series, and up to 10 MPa (100 bar) for the LL series. The permissible working pressure depends upon size, materials, design, working conditions, application, etc. Conformance to the dimensional information i
34、n this part of ISO 1179 does not guarantee rated performance. Each manufacturer shall perform tests according to the specification contained in this part of ISO 1179 in order to ensure that components made to this part of ISO 1179 comply with the performance ratings. NOTE 1 This part of ISO 1179 app
35、lies to connectors detailed in ISO 8434-1 and 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 documents are indis
36、pensable 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 threads Part 1: Dimen
37、sions, tolerances and designation 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 19879, Metallic tube connections for fluid power and general use Test methods for hydraulic fluid po
38、wer connections 5 EN ISO 1179-4:2008 (E) DIN EN ISO 1179-4:2008-08 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 5598 apply. 4 Dimensions ISO 1179-4 stud ends shall conform to the dimensions given in Figure 1 and Table 1. Hexagonal tolerances acros
39、s flats shall be according to ISO 4759-1:2000, product grade C. 5 Requirements 5.1 Working pressure ISO 1179-4 stud ends made of low carbon steel shall be designed for use at the working pressures given in Table 2. 5.2 Performance ISO 1179-4 stud ends made of low carbon steel shall meet or exceed th
40、e burst and impulse pressures given in Table 2, when tested in accordance with Clause 7 and assembled using the torques in Table 3. 6 Metal-to-metal sealing The machined seal edge is compressed during assembly. This causes damage to the sealing face of the port. Safe reassembly is not possible. A hi
41、gh surface pressure is required, otherwise leakage is possible. 7 Test methods 7.1 Burst pressure test (failure pressure test) 7.1.1 Principle Three samples shall be tested to confirm that ISO 1179-4 stud ends meet or exceed a ratio of 4:1 between the burst and working pressures. 7.1.2 Materials Tes
42、t block and stud ends Test blocks shall be in accordance with the requirements specified in ISO 19879. Stud ends shall be made from low carbon steel and be plated. 7.1.3 Procedure 7.1.3.1 Thread lubrication For testing only, threads and contact surfaces shall be lubricated in accordance with the req
43、uirements of ISO 19879. 7.1.3.2 Stud end torque Stud ends shall be tested after application of the torques given in Table 3. 6 DIN EN ISO 1179-4:2008-08 EN ISO 1179-4:2008 (E) 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 e
44、ndurance (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. 7.2.2 Materials Use the same materials as specified in 7.1.2. 7.2.3 Procedure 7.2.3.1 Thread lubrication Apply lubricant as specified in 7.1
45、.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 accordance with the requirements of ISO 19879, except the rate of pressure rise shall be adjusted accordingly. 7.3 Test report Test results and conditions shall be rep
46、orted on the test data form given in Annex A. 7.4 Re-use of components Parts used for cyclic endurance or burst test shall not be tested further, used or returned to stock. 8 Designation of stud ends Stud ends shall be designated by: a) “Stud end”; b) reference to this part of ISO 1179, i.e. ISO 117
47、9-4; c) thread size; d) the letter symbol for the relevant series. EXAMPLE A stud end with a G 3/8 A thread in accordance with ISO 228-1 is designated as follows: Stud end ISO 1179-4 - G 3/8 A-S 7 EN ISO 1179-4:2008 (E) DIN EN ISO 1179-4:2008-08 9 Identification statement (reference to this part of
48、ISO 1179) Use the following statement in test reports, catalogues and sales literature when electing to comply with this part of ISO 1179: “Stud end for general use only conforms to ISO 1179-4, Connections for general use and fluid power Ports and stud ends with ISO 228-1 threads with elastomeric or
49、 metal-to-metal sealing Part 4: Stud ends for general use only with metal-to-metal sealing (type B).” Dimensions in millimetres, surface roughness values in micrometres. Key 1 thread pitch diameter aDimension across the flats. Figure 1 ISO 1179-4 stud end for general use only with metal-to-metal sealing (type B) Table 1 Dimensions for ISO 1179-4 stud ends for general use only with metal-to-metal sealing (type B) Dimensions in millimetres Thread d2d3d4d5L1L2L3R s W size maximum drill size hex d100,4LL s
