1、BRITISH STANDARD AEROSPACE SERIES BS EN 3789:2001 Pipe coupling 8 30 Protective plugs with external threads The European Standard EN 3789:2001 has the status of a British Standard ICS 49.025.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN 3789:2001 This British Standar
2、d, 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 on 15 October 2001 BSI 15 October 2001 ISBN 0 580 37176 X National foreword This British Standard is the official Engl
3、ish language version of EN 3789:2001. The UK participation in its preparation was entrusted to Technical Committee ACE/69, Aerospace Hydraulic Systems, Fluids present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informe
4、d; monitor related international and European developments and promulgate them in the UK. Summary 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
5、 last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN3789 September2001 ICS49.080 Englishversion AerospaceseriesPipecoupling830Protectiveplugswith externalthreads ThisEuropeanStandardwasapprovedbyCENon29December2000. CENmembersarebo
6、undtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEu
7、ropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechR
8、epublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN All
9、rightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN3789:2001EEN3789:2001(E) 2 Foreword ThisEuropeanStandardhasbeenpreparedbytheEuropeanAssociationofAerospaceManufacturers (AECMA). AfterinquiriesandvotescarriedoutinaccordancewiththerulesofthisAssociation,thisS
10、tandardhas receivedtheapprovaloftheNationalAssociationsandtheOfficialServicesofthemembercountriesof AECMA,priortoitspresentationtoCEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidentical textorbyendorsement,atthelatestbyMarch2002,andconflictingnationalstanda
11、rdsshallbewithdrawnat thelatestbyMarch2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark, Finland,France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Netherlands,
12、Norway,Portugal, Spain,Sweden,SwitzerlandandtheUnitedKingdom. Page2 EN3789:2001 15October2001EN3789:2001(E) 3 1 Scope Thisstandardspecifiesthecharacteristicsforplasticplugsforpipecouplings8 30usedtoprotectthe couplingsduringtransportation,storageandremovalofunitsinsystem,foraerospaceapplications.The
13、 plugsincorporateanexternalthreadforscrewingontothethreadedportionofapipecoupling. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorundatedreferenceprovisionsfromotherpublications. Thesenormativereferencesarecitedattheappropriateplacesinthetextandthepublicationsarelisted hereafter.Ford
14、atedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplyto thisEuropeanStandardonlywhenincorporatedinitbyamendmentorrevision.Forundatedreferences,the latesteditionofthepublicationreferredtoapplies(includingamendments). ISO27681 GeneraltolerancesPart1:Tolerancesforlinearandangula
15、rdimensionswithoutindividual toleranceindications ISO58553 AerospaceseriesMJthreadsPart3:Limitdimensionsforfittingsforfluidsystems EN2424 AerospaceseriesMarkingofaerospaceproducts 3 Requiredcharacteristics 3.1 ConfigurationDimensions Accordingtofigure1andtable1 Thedimensionsnotspecifiedareatthemanuf
16、acturersoption. 3.2 Characteristics Theplugsshallbewithoutanyvisiblecontamination.Internalsurfaces,threadsandendsurfacesshallbe freefromburrs. Theplugscanbeusedfortransportation/storageofoilfilledhydrauliccomponents,at0,1MPaoverpressure for8hwithoutleakage. Page3 EN3789:2001 15October2001EN3789:2001
17、E) 4 3.3 Material PolyethyleneHD Colour:white Dimensionsinmillimetres a Thread b Areaformarking NOTEGeneraltolerancesseeISO27681 Figure1 Page4 EN3789:2001 15October2001EN3789:2001(E) 5 Table1 Dimensionsinmillimetres Code a Thread b 4g6g d 1 d 2 d 3 d 4 hl 1 l 2 05 06 08 MJ10 1 ,00 MJ12 1,25 MJ14 1,
18、5 0 005 007 009 09 10 12 17 19 21 14 16 18 4 4 4 15 15 16 10 10 11 10 12 14 16 18 MJ16 1,5 0 MJ18 1,5 0 MJ20 1,5 0 MJ22 1,5 0 MJ24 1,5 0 011 013 015 017 019 14 16 18 20 22 23 25 27 29 31 20 22 24 26 28 5 5 5 6 6 16 16 16 16 16 11 11 11 11 11 20 22 25 28 MJ27 1,5 0 MJ30 1,5 0 MJ33 1,5 0 MJ36 1,5 0 02
19、2 025 028 031 25 28 31 34 34 37 40 43 31 34 37 40 6 6 6 6 16 16 16 16 11 11 11 11 32 MJ39 1,5 0 034 37 46 43 6 16 11 a Correspondstothepipenominaloutsidediameter b AccordingtoISO58553 4 Designation EXAMPLE: Descriptionblock Identityblock PROTECTIVEPLUG EN378908 Numberofthisstandard Code(seetable1) N
20、OTE:Ifnecessary,thecode I9005shallbeplacedbetweenthedescriptionblockandtheidentityblock. 5 Marking AccordingtoEN2424,styleFpluscodeoftable1andfigure1. Page5 EN3789:2001 15October2001BS EN 3789:2001 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent nati
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