1、February 2008DEUTSCHE NORM English price group 20No 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!$LIt“141388
2、1www.din.deDDIN EN ISO 8434-1Metallic tube connections for fluid power and general use Part 1: 24 degree cone connectors (ISO 8434-1:2007)English version of DIN EN ISO 8434-1:2008-02Metallische Rohrverschraubungen fr Fluidtechnik und allgemeine Anwendung Teil 1: Verschraubungen mit 24-Konus (ISO 843
3、4-1:2007)Englische Fassung DIN EN ISO 8434-1:2008-02SupersedesDIN EN ISO 8434-1:1997-11www.beuth.deDocument comprises 54 pagesDIN EN ISO 8434-1:2008-02 2 National foreword This standard has been prepared by Technical Committee ISO/TC 131 “Fluid power systems” in collaboration with Technical Committe
4、e 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 AA Rohrverschraubun
5、gen. The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are as follows: ISO 48 DIN ISO 48 ISO 5598 E DIN ISO 5598 ISO 6149-1 DIN ISO 6149-1 ISO 6149-2 DIN ISO 6149-2 ISO 6149-3 DIN ISO 6149-3 ISO 9974-1 DIN EN ISO 9974-1 ISO 9974-2 DIN EN ISO 9974-2 ISO
6、9974-3 DIN EN ISO 9974-3 ISO 12151-2 DIN ISO 12151-2 ISO 19879 DIN EN ISO 19879 Amendments This standard differs from DIN EN ISO 8434-1:1997-11 as follows: a) The comprehensive national foreword of the first edition of DIN EN ISO 8434-1 has been deleted. b) With regard to the test methods reference
7、is made to ISO 19879. c) Some figures have been revised and new figures have been included. d) Normative references have been updated. Previous editions DIN 3853: 1958-09, 1963-06, 1982-11 DIN 3861: 1957-09, 1982-11, 1994-05 DIN 3865: 1985-02, 1994-05 DIN 3870: 1954-11, 1957-05, 1961-08, 1965-09, 19
8、83-01, 1985-05 DIN 3901: 1957-06, 1965-02, 1984-04, 1987-09 DIN 3902: 1957-06, 1984-04 DIN 3905: 1957-06, 1965-12, 1984-04 DIN 3908: 1957-06, 1965-12, 1984-04 DIN 3909: 1957-06, 1965-12, 1984-04 DIN 3910: 1958-03, 1965-02, 1984-04 DIN 3911: 1957-06, 1965-12, 1984-04 DIN 3912: 1957-06, 1965-12, 1984-
9、04 DIN 3951: 1966-08, 1984-04 DIN 3952: 1969-09, 1984-04 DIN 3953: 1969-09, 1984-04 DIN 3954: 1969-09, 1984-04 DIN 3955: 1984-04, 1987-09 DIN EN ISO 8434-1: 1997-11 DIN EN ISO 8434-1:2008-02 3 National Annex NA (informative) Bibliography DIN EN ISO 9974-1, Connections for general use and fluid power
10、 Ports and stud ends with ISO 261 threads with elastomeric or metal-to-metal sealing Part 1: Threaded ports DIN EN 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 (t
11、ype E) DIN EN 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) DIN EN ISO 19879, Metallic tube connections for fluid power and general use Test methods fo
12、r hydraulic fluid power connections E DIN ISO 5598, Fluid power systems and components Vocabulary DIN ISO 6149-1, Connections for fluid power and general use Ports and stud ends with ISO 261 threads and O-ring sealing Part 1: Ports with O-ring seal in truncated housing DIN ISO 6149-2, Ports and stud
13、 ends with ISO 261 threads and O-ring sealing Part 2: Heavy duty (S series) stud ends Dimensions, design, test methods and requirements DIN ISO 6149-3, Connections for fluid power and general use Ports and stud ends with ISO 261 threads and O-ring sealing Part 3: Light duty (L series) stud ends; dim
14、ensions, design, test methods and requirements DIN ISO 48, Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD) DIN ISO 12151-2, Connections for hydraulic fluid power and general use Hose fittings Part 2: Hose fittings with ISO 8434-1 and ISO 8434-4 2
15、4 cone connector ends with O-rings DIN EN ISO 8434-1:2008-02 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8434-1 September 2007 ICS 23.100.40 Supersedes EN ISO 8434-1:1997 English Version Metallic tube connections for fluid power and general use - Part
16、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) Metallische Rohrverschraubungen fr Fluidtechnik und allgemeine Anwendung - Teil 1: Verschr
17、aubungen mit 24-Konus (ISO 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 for giving this European Standard the status of a national standard without any alteration. U
18、p-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 official versions (English, French, German). A version in any other language made by translation
19、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, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greec
20、e, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Managemen
21、t Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8434-1:2007: E2 DIN EN ISO 8434-1:2008-02 EN ISO 8434-1:2007 (E) Contents Page Foreword .3 Introduction 4 1 Scope .5 2 Normative
22、 references .5 3 Terms and definitions 7 4 Materials 8 4.1 General .8 4.2 Connector bodies .9 4.3 Nuts 9 4.4 Cutting rings 9 4.5 O-rings .9 5 Pressure/temperature requirements .9 6 Designation of connectors . 14 7 Requirements for tubes 16 8 Across-flats dimensions and tolerances 16 9 Design . 16 9.
23、1 Connectors . 16 9.2 Dimensions . 16 9.3 Passage tolerances . 16 9.4 Angular tolerances 17 9.5 Contour details 17 9.6 Ports and stud ends 17 9.7 Stud end sealing 17 10 Screw threads 17 10.1 Cone ends and nuts 17 10.2 Stud ends (connection ends) . 17 11 Manufacture 17 11.1 Construction . 17 11.2 Wor
24、kmanship . 18 11.3 Finish 18 11.4 Corners . 18 12 Assembly instruction 18 13 Procurement information 19 14 Marking of components 19 15 Performance and qualification test 19 15.1 General 19 15.2 Repeated assembly test 19 15.3 Proof test 19 15.4 Burst pressure test 19 15.5 Cyclic endurance (impulse) t
25、est . 19 15.6 Vibration test 19 15.7 Leakage (gas) test . 20 15.8 Overtightening test 20 16 Identification statement (reference to this part of ISO 8434) . 20 Bibliography 50 Foreword This document (EN ISO 8434-1:2007) has been prepared by Technical Committee ISO/TC 131 “Fluid power systems“ in coll
26、aboration with 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 identical text or by endorsement, at the latest by March 2008, and
27、conflicting national standards shall be withdrawn at the 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, Belgi
28、um, 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. Endorsement notice
29、The text of ISO 8434-1:2007 has been approved by CEN as a EN ISO 8434-1:2007 without any modification. 3 DIN EN ISO 8434-1:2008-02 EN ISO 8434-1:2007 (E) Introduction In fluid power systems, power is transmitted and controlled through a fluid (liquid or gas) under pressure within an enclosed circuit
30、. In general 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. 4 DIN EN ISO 8434-1:2008-02 EN ISO 8434-1:2007 (E) 1 Scope This
31、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 are for use in fluid power
32、 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 related hose fitting specifica
33、tion.) 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. For every application,
34、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 application allow for the use
35、 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 performance and qualification
36、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 any amendments) applies.
37、 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 metric screw threads General
38、 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 5 EN ISO 8434-1:2007 (E) DIN EN ISO 8434-1:2008-02 ISO 1179-1, Connections for general use and fl
39、uid 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: Heavy-duty (S series) and light
40、-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 (type B) ISO 3304, Plain end s
41、eamless 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 Part 1: Bolts, screws, studs a
42、nd 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 O-ring seal ISO 6149-2, Connect
43、ions 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 use Ports and stud ends with I
44、SO 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 stud ends with ISO 261 threads
45、 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, Connections for general use a
46、nd 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 8434-1 and ISO 8434-4 24 cone conn
47、ector ends with O-rings ISO 19879:2005, Metallic tube connections for fluid power and general use Test methods for hydraulic fluid power connections 6 DIN EN ISO 8434-1:2008-02 EN ISO 8434-1:2007 (E) 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 55
48、98 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, axially aligned outlets
49、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 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
