1、BRITISH STANDARD AEROSPACE SERIES BS EN 4550-3:2003 Pipe coupling, 37 Design configuration Inch series Part 3: Port connections The European Standard EN 4550-3:2003 has the status of a British Standard ICS 49.080 BS EN 4550-3:2003 This British Standard was published under the authority of the Standa
2、rds Policy and Strategy Committee on 6 February 2003 BSI 6 February 2003 ISBN 0 580 41206 7 National foreword This British Standard is the official English language version of EN 4550-3:2003. The UK participation in its preparation was entrusted by Technical Committee ACE/12, Aerospace fasteners and
3、 fastening systems, to Subcommittee ACE/12/1, Aerospace fasteners and fastening systems (international), which has the responsibility to: A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement inter
4、national or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purp
5、ort to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committe
6、e 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. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 5 an
7、d a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN45503 January2003 ICS49.080 Englishversion AerospaceseriesPipecoupling,37Designcon
8、figuration InchseriesPart3:Portconnections ThisEuropeanStandardwasapprovedbyCENon2June2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferen
9、cesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCen
10、trehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Slovakia,Spain,Sweden,SwitzerlandandUn ited Kingdom. EUROPEANCOMMITTEEF
11、ORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2003CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN45503:2003EEN45503:2003(E) 2 Contents page Foreword3 1 Scope 3 2 Normativere
12、ferences 3 3 DimensionsTolerances. .3 4 Designation.5EN45503:2003(E) 3 Foreword Thisdocument(EN45503:2003)hasbeenpreparedbytheEuropeanAssociationofAerospaceManufacturers Standardization(AECMASTAN). AfterenquiriesandvotescarriedoutinaccordancewiththerulesofthisAssociation,thisStandardhasreceived thea
13、pprovaloftheNationalAssociationsandtheOfficialServicesofthemembercountriesofAECMA,priortoits presentationtoCEN. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyJuly2003,andconflictingnationalstandardsshallbewithdrawnatthe
14、latestby July2003. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Hungary,Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Port
15、ugal, Slovakia,Spain,Sweden,SwitzerlandandtheUnitedKingdom. 1Scope Thisstandarddefinesthedimensionsandtolerancesfortheportconnectionofinchseriespipecouplings,37,for aerospaceapplications. MatchedfluidsystemcomponentshallhaveaportendinaccordancewithEN45502. 2 Normativereferences ISO3161 AerospaceUNJt
16、hreadsGeneralrequirementsandlimitdimensions EN45502 AerospaceseriesPipecouplings,37DesignconfigurationInchseriesPart2:Portends 1) 3 DimensionsTolerances Seefigure1andtable1.Dimensionsandtolerancesareinmillimetres. 1) PublishedasAECMAPrestandardatthedateofpublicationofthisstandardEN45503:2003(E) 4 Ke
17、y 1 Lowdepthconfiguration Hmin.= Fmin. 2 Highdepthconfiguration 3 Thread 4 Pitchdiameter 5 DetailV Figure1EN45503:2003(E) 5 Table1 Dimensional code a Nominal diameter Thread b A 4 , 0 0 + B min. D 015 0 + E 1 0 + F min. G 3 , 0 0 + J 03 4,763 .375024UNJF3B 12,70 16,9 9,90 12,6 9,4 1,6 04 6,350 .4375
18、20UNJF3B 14,30 18,5 11,50 05 7,924 .500020UNJF3B 15,90 20,1 13,10 14,5 1,9 0,08 06 9,525 .562518UNJF3B 17,50 21,7 14,70 15,0 10,4 2,1 0,10 08 12,700 .750016UNJF3B 22,25 26,5 19,50 16,5 2,4 10 15,875 .875014UNJF3B 25,40 29,7 22,75 17,0 11,5 2,7 12 19,050 1.062512UNJ3B 31,35 36,1 27,55 0,15 16 25,400
19、1.312512UNJ3B 37,80 42,4 27,45 33,90 19,0 12,5 3,2 0,20 a Thiscodecorrespondstothenominaldiametergivenin16thofincheswithintwodigits. b QuotedininchesinaccordancewithISO3161. 4Designation EXAMPLE: Identityblock EN4550308 Numberofthisstandard Dimensionalcode(seetable1)BS EN 4550-3:2003 BSI 389 Chiswic
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