1、BRITISH STANDARD AEROSPACE SERIES Pipe coupling 8“30 - Protective caps with internal threads The European Standard EN 3790:2001 has the status of a British Standard ICs 49.025.01 BS EN 3790:2001 P EEz-EE%- U- .t.-.-=EzEIm FEEz%Ek NO COPYING W1 IHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LA
2、W BS EN 3790:ZOOl Amd. No. National foreword Date Comments This British Standard is the official English language version of EN 3790:ZOOl. The UK participation in its preparation was entrusted to Technical Committee ACE/69, Aerospace Hydraulic Systems, Fluids and Components, which has the responsibi
3、lity to: - - aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. - A
4、list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Corresp
5、ondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not
6、of itself confer immunity from legal obligations. This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee and comes into effect on 17 October 2001 Summary
7、 of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 5 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication BSI 17 October 2001 ISBN O 580 37177 8 EUROPEAN
8、 STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3790 September 2001 ICs 49.080 English version Aerospace series - Pipe coupling 8“30 - Protective caps with internal threads This European Standard was approved by CEN on 29 December 2000. CEN members are bound to comply with the CENICENELEC Internal Regu
9、lations 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 Management Centre or to any CEN member. This Eur
10、opean 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 ils own language and notified to the Management Centre has the same status as the official versions. CEN members are the natio
11、nal standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION EUROPISCHES KOMITEE FR NORMUNG COMITE EUROPEE
12、N DE NORMALISATION Management Centre: rue de Stassart, 36 8-1050 Brussels O 2001 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3790:2001 E EN 3790:2001 (E) Foreword This European Standard has been prepared by the European Associa
13、tion of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of AECMA, prior to its presentation to CEN. This Eur
14、opean 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 2002, and conflicting national standards shall be withdrawn at the latest by March 2002. According to the CENKENELEC Internal Regulations, the nationa
15、l standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. 2 EN
16、 3790:2001 (E) 1 Scope This standard specifies the characteristics for plastic caps for pipe couplings 830 used to protect the couplings during transportation, storage and removal of units in system, for aerospace applications. The caps incorporate an internal thread for screwing on to the threaded
17、portion of a pipe coupling. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequ
18、ent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies (including amendments). IS0 2768-1 General tolerances - Part 1: Toleran
19、ces for linear and angular dimensions without individual tolerance indications IS0 5855-3 EN 2424 Aerospace series - MJ threads - Part 3: Limit dimensions for fittings for fluid systems Aerospace series - Marking of aerospace products 3 Required characteristics 3.1 Configuration - Dimensions Accordi
20、ng to figure 1 and table 1 The dimensions not specified are at the manufacturers option 3.2 Characteristics The caps shall be without any visible contamination. Internal surfaces and threads shall be free from burrs. The caps can be used for transportation/storage of oil-filled hydraulic components,
21、 at 0,l MPa overpressure for 8 h without leakage. 3 EN 3790:2001 (E) 3.3 Material Polyethylene Colour: white Dimensions in millimetres X a Thread b Area for marking NOTE General tolerances see IS0 2768-1 Figure 1 4 EN 3790:2001 (E) Code a Thread 4H5H 05 MJlOxl 06 MJ12x1,25 08 MJI4xl,5 10 MJ16x 15 12
22、 MJ18x1,5 14 MJ20xl,5 16 MJ22x15 18 MJ24x1,5 20 MJ27x13 22 MJ30xl,5 25 MJ33x1,5 28 MJ36x1,5 32 MJ39x13 Table 1 Dimensions in millimetres dl d2 15 6 17 7 19 9 21 11 23 13 25 14 27 16 29 18 32 21 35 24 38 26 41 28 44 31 14 16 18 4 10 20 5 10 22 5 10 24 5 10 26 5 10 29 6 10,5 32 6 10,5 35 6 10,5 38 6 1
23、0,5 41 6 10,5 7 7 8,5 9 - 4 Designation EXAMPLE: Description block Identity block PROTECTIVE CAP EN3790-08 Number of this standard T Code (see table 1) NOTE: If necessary, the code 19005 shall be placed between the description block and the identity block. 5 Marking According to EN 2424, style F plu
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