1、BSI Standards PublicationBS EN 4550-4:2014Aerospace series Pipecoupling, 37 Designconfiguration Inch seriesPart 4: Female sealing endsBS EN 4550-4:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 4550-4:2014. It supersedes BS EN 4550-4:2003 which is withdraw
2、n.BSI, as a member of CEN, is obliged to publish EN 4550-4:2014 as a British Standard. However, attention is drawn to the fact that during the development of this European Standard, the UK committee voted against its approval as a European Standard. The reason for this disapproval is that the UK com
3、mittee considers the standard to describe an interface that does not perform reliably in high pressure Aerospace applications. As a result it has not been used in any new design for some 30 years.The UK participation in its preparation was entrusted to Technical Committee ACE/69, Aerospace hydraulic
4、 systems, fluids and com-ponents.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institu
5、tion 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 87291 4ICS 49.080Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2015.Amendments/corri
6、genda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4550-4 December 2014 ICS 49.080 Supersedes EN 4550-4:2003English Version Aerospace series - Pipe coupling, 37 - Design configuration - Inch series - Part 4: Female sealing ends Srie arospat
7、iale - Systme de raccordement 37 - Configuration gomtrique - Srie inch - Partie 4: Extrmits dtanchit femelles Luft- und Raumfahrt - Rohrverschraubung 37 - Konstruktionsblatt - Inch-Reihe - Teil 4: Dichtgeometrie This European Standard was approved by CEN on 11 October 2014. CEN members are bound to
8、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. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CEN
9、ELEC 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 under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has th
10、e same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxemb
11、ourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussel
12、s 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4550-4:2014 EBS EN 4550-4:2014EN 4550-4:2014 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Dimensions Tolerances .4 4 Designation 5 Annex A (informative)
13、Standard evolution form 6 BS EN 4550-4:2014EN 4550-4:2014 (E) 3 Foreword This document (EN 4550-4:2014) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association
14、 this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This document supersedes 4550-4:2003 This European Standard shall be given the status of a national standard, either by publication of an
15、 identical text or by endorsement, at the latest by June 2015, and conflicting national standards shall be withdrawn at the latest by June 2015. 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
16、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: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
17、Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 4550-4:2014EN 4550-4:2
18、014 (E) 4 1 Scope This standard defines the dimensions and tolerances for the female sealing end of inch series pipe couplings, 37, for aerospace applications. Matched fluid system component shall have a male sealing end in accordance with EN 4550-1. 2 Normative references The following referenced d
19、ocuments 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. EN 4550-1, Aerospace series Pipe coupling, 37 Design configuration Inch ser
20、ies Part 1: Male sealing ends, spherical 3 Dimensions Tolerances See Figure 1 and Table 1. Dimensions and tolerances are in millimetres. Key 1 R 0,10 to R 0,25 Figure 1 BS EN 4550-4:2014EN 4550-4:2014 (E) 5 Table 1 Dimensional code a Nominal diameter Thread A B D E F S 0,10 0,10 03 04,763 .375 0-24U
21、NJF-3A 2,80 05,87 05,94 08,28 08,35 04,53 4,70 1,16 04 06,350 .437 5-20UNJF-3A 4,40 07,47 07,54 09,66 09,72 06,25 5,00 0,87 05 07,924 .500 0-20UNJF-3A 6,00 09,22 09,29 11,23 11,30 07,77 06 09,525 .562 5-18UNJF-3A 7,60 10,90 10,97 12,68 12,75 09,61 5,35 1,00 08 12,700 .750 0-16UNJF-3A 09,95 14,20 14,
22、27 17,25 17,32 12,66 6,35 1,25 10 15,875 .875 0-14UNJF-3A 12,70 17,45 17,52 20,17 20,24 15,50 6,65 1,22 12 19,050 1.062 5-12UNJ-3A 15,90 20,91 20,98 24,62 24,68 19,34 6,85 1,54 16 25,400 1.312 5-12UNJ-3A 22,25 27,39 27,45 30,97 31,03 25,64 7,30 1,58 aThis two digit quantitative code corresponds to t
23、he tube nominal diameter as the number of 1/16 inch increments it contains i.e. divided by 1/16 (.0625) inch. 4 Designation EXAMPLE Identity block EN4550-4-08 Number of this standard Dimensional code (see Table 1) BS EN 4550-4:2014EN 4550-4:2014 (E) 6 Annex A (informative) Standard evolution form MO
24、DIFICATION REASON AND VALIDATION German title Before: “Rohrverschraubungen 37 Konstruktionsblatt Inch-Reihe Teil 4: Einfahrdichtungsen”. After: “Rohrverschraubung 37 Konstruktionsblatt Inch-Reihe Teil 4: Dichtgeometrie“. Translation into German was not correct Figure 1 Before: Dimension S was indica
25、ted as an absolute dimension (boxed dimension). After: Dimension S is indicated as a dimension with tolerance and tolerance 0,10 is added in Table 1. Incompatibility with another absolute dimension. Figure 1 Before: Dimension 37 was indicated as an absolute dimension (boxed dimension). After: Dimens
26、ion 37 is indicated as a dimension with tolerance 0,5. Incompatibility with another absolute dimension. Table 1 Before: Dimension A (hole) was 2,75 for -03 4,35 for -04 5,90 for -05 7,55 for -06 After: Dimension A is 2,80 for -03 4,40 for -04 6,00 for -05 7,60 for -06 New values allow the possibilit
27、y to machine a straight hole into ferrules with welded end from -03 to -06 (as it is the case for straight nipples with welded end). This page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and service
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