1、BSI Standards PublicationBS EN 3631:2014Aerospace series Fluidfittings, flanged, 90 elbowed Sealing by O-ring for 0,8 mmthick tubesBS EN 3631:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 3631:2014. Itsupersedes BS EN 3631:2008 which is withdrawn.The UK p
2、articipation in its preparation was entrusted to TechnicalCommittee ACE/12, Aerospace fasteners and fastening systems.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contrac
3、t. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 84541 3ICS 49.080Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority o
4、f theStandards Policy and Strategy Committee on 31 October 2014.Amendments issued since publicationDate Text affectedBS EN 3631:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3631 October 2014 ICS 49.080 Supersedes EN 3631:2008English Version Aerospace series - Fluid fittings, flanged, 90
5、elbowed - Sealing by O-ring for 0,8 mm thick tubes Srie arospatiale - Raccords bride 90 - tanchit par joint torique pour tubes de 0,8 mm dpaisseur Luft- und Raumfahrt - Rohrverbindungen mit Flansch, 90 -O-Ring-Dichtung fr Rohre mit einer Dicke von 0,8 mm This European Standard was approved by CEN on
6、 4 January 2014. 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. Up-to-date lists and bibliographical references concerning such national standards may
7、 be obtained on application to the CEN-CENELEC 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 t
8、o the CEN-CENELEC Management Centre has the 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,
9、 Ireland, Italy, Latvia, Lithuania, Luxembourg, 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 Managemen
10、t Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3631:2014 EBS EN 3631:2014EN 3631:2014 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Required characteristics .4
11、 3.1 Configuration, dimensions, tolerances .4 3.1.1 Configuration .4 3.1.2 Dimensions and tolerances 4 4 Forging flanged fitting, Type A .4 5 Machined flanged fitting, Type B .8 6 Fitting . 11 6.1 Fitting for tubes 16. 11 6.2 Fitting for tubes 16. 11 7 Cone and end fitting . 12 8 Designation . 13 9
12、Marking 13 10 Quality assurance . 13 BS EN 3631:2014EN 3631:2014 (E) 3 Foreword This document (EN 3631:2014) 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 Associ
13、ation, 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 EN 3631:2008. This European Standard shall be given the status of a national standard, either by publicatio
14、n of an identical text or by endorsement, at the latest by April 2015, and conflicting national standards shall be withdrawn at the latest by April 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
15、 be held 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,
16、Estonia, 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 3631:2014EN 3
17、631:2014 (E) 4 1 Scope This European Standard specifies the characteristics of the fluid fittings, flanged, 90 elbowed, sealing by O-ring, for 0,8 mm thick tubes. NOTE Flanged fitting installation hole and assembly, see EN 3633 and TR 3634. 2 Normative references The following documents, in whole or
18、 in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2157-3, Aerospace series Steel Forging s
19、tock and forgings Technical specification Part 3: Pre-production and production forgings EN 2424, Aerospace series Marking of aerospace products EN 3482, Aerospace series Steel FE-PA13 Annealed Reference heat treatment: softened Forging stock De 100 mm 1) EN 3487, Aerospace series Steel FE-PA3601 (X
20、6CrNiTi18-10) Air melted Softened Bar for machining a or D 250 mm 500 MPa Rm 700 MPa EN 3633, Aerospace series Installation hole for fluid fittings, flanged EN 3635, Aerospace series Weld lip Geometrical configuration EN 9100, Quality Management Systems Requirements for Aviation, Space and Defence O
21、rganizations TR 3634, Aerospace series Fluid fittings, flanged Assembly recommendations 2)3 Required characteristics 3.1 Configuration, dimensions, tolerances 3.1.1 Configuration See Figure 1 to Figure 8. 3.1.2 Dimensions and tolerances See Figure 1 to Figure 8 and Table 1 to Table 5. 3.2 Material E
22、N 3487 or EN 3482. Fittings can be machined or forged according to EN 2157-3. 4 Forging flanged fitting, Type A See Figure 1 and Figure 2 and Table 1 and Table 2. 1)Published as ASD-STAN Prestandard at the date of publication of this standard (www.asd-stan.org).2)Published as ASD-STAN Technical Repo
23、rt at the date of publication of this standard (www.asd-stan.org).BS EN 3631:2014EN 3631:2014 (E) 5 Dimensions in millimetres Break sharp edges 0,1 mm to 0,3 mm Key aSee Figure 8 bSee Figure 7 cTwo holes 5,400,2+dMarking eTwo identical 11 spot facings or straight profile Figure 1 3,2 6,4 BS EN 3631:
24、2014EN 3631:2014 (E) 6 Dimensions in millimetres Break sharp edges 0,1 mm to 0,3 mm Key For tube = 32 these spot facings do not overlap fitting body aSee Figure 8 bSee Figure 7 cThree equidistant holes 5,400,2+dMarking eThree identical 11 spot facings Figure 2 3,2 6,4 BS EN 3631:2014EN 3631:2014 (E)
25、 7 Table 1 Dimensions in millimetres Diameter code Hole code Tube (0,8 thick) A E G H K L M N P R V nom. tol. H11 0,05 0,15 + 0,7 0,3 0 0,5 + 0,7 0,3 0 0,5 0,15 + 0,35 0,15 040 2 4 2,3 + 0,075 0 6 18 15 20 28 8 8,4 19,5 4 4 060 6 4,3 8 20 17 21,4 30 10 9,9 20,5 5 5 080 8 6,3 + 0,09 0 10 22 19 22,8 3
26、2 12 11,3 21,5 6 6 100 10 8,3 12 24 21 24,2 34 14 12,7 22,5 7 7 120 12 10,3 + 0,11 0 14 26 23 25,5 36 16 14 23,5 8 8 140 14 12,3 16 28 25 26,5 38 18 15 24,5 9 9 160 16 14,3 18 30 27 27,5 40 20 16 25,5 10 10 Table 2 Dimensions in millimetres Diameter code Hole code Tube (0,8 thick) A e E G J K M N P
27、R V nom. tol. H11 0,2 0,05 0,15 0 0,5 + 0,7 0,3 0 0,5 0,15 + 0,35 0,15 140 3 14 12,3 + 0,11 0 4 16 31 41 26,5 18 15 24,5 9 9 160 16 14,3 18 33 43 27,5 20 16 25,5 10 10 180 18 16,3 20 36 46 28,5 22 17 26 11 11 200 20 18,3 + 0,13 0 5 22 38 48 29 24 18 26,5 12 12 220 22 20,3 24 40 50 30 26 19,5 27 13 1
28、3 250 25 23,3 27 46 56 31 29 21 28,5 14,5 14,5 280 28 26,3 30 52 62 32,5 32 23 30 16 16 320 32 30,3 + 0,16 0 34 60 70 35 36 25 32 18 18 BS EN 3631:2014EN 3631:2014 (E) 8 5 Machined flanged fitting, Type B See Figure3 and Figure 4 and Table 3 and Table 4. Dimensions in millimetres Break sharp edges 0
29、,1 mm to 0,4 mm Key aSee Figure 8 bSee Figure 7 cTwo holes 5,400,2+dMarking eTwo identical 11 spot facings Figure 3 3,2 BS EN 3631:2014EN 3631:2014 (E) 9 Dimensions in millimetres Break sharp edges 0,1 mm to 0,3 mm Key For tube = 32 these spot facings do not overlap fitting body aSee Figure 8 bSee F
30、igure 7 cThree equidistant holes 5,400,2+dMarking eThree identical 11 spot facings Figure 4 3,2 BS EN 3631:2014EN 3631:2014 (E) 10 Table 3 Dimensions in millimetres Diameter code Hole code Tube (0,8 thick) A B E G H K L M N P Q R U W nom. tol. H11 0,2 0,05 0,15 0 0,5 0,2 0 0,5 0,15 0,2 0,15 040 2 4
31、2,3 + 0,075 0 6 6 18 15 20 28 8 8,4 19,5 2,5 4 27,4 08 060 6 4,3 6,5 8 20 17 21,4 30 10 9,9 20,5 3 5 29,4 10 080 8 6,3 + 0,09 0 7 10 22 19 22,8 32 12 11,3 21,5 3,5 6 31,6 12 100 10 8,3 7,5 12 24 21 24,2 34 14 12,7 22,5 4 7 33,6 14 120 12 10,3 + 0,11 0 8 14 26 23 25,5 36 16 14 23,5 4,5 8 35,6 16 140
32、14 12,3 8,5 16 28 25 26,5 38 18 15 24,5 5 9 37,6 18 160 16 14,3 9 18 30 27 27,5 40 20 16 25,5 6 10 39,6 20 Table 4 Dimensions in millimetres Diameter code Hole code Tube (0,8 thick) A C e E G J K M N P Q R V W nom. tol. H11 0,2 0,2 0,05 0,15 0 0,5 0,2 0 0,5 0,15 0,2 0,2 0,15 140 3 14 12,3 + 0,11 0 4
33、 16 31 41 26,5 18 15 24,5 5 9 9 18 160 16 14,3 18 33 43 27,5 20 16 25,5 6 10 10 20 180 18 16,3 6 20 36 46 28,5 22 17 26 6 11 11 22 200 20 18,3 + 0,13 0 7 5 22 38 48 29 24 18 26,5 7 12 12 24 220 22 20,3 8 24 40 50 30 26 19,5 27 8 13 13 26 250 25 23,3 9 27 46 56 31 29 21 28,5 9 14,5 14,5 29 280 28 26,
34、3 10 30 52 62 32,5 32 23 30 10 16 16 32 320 32 30,3 + 0,16 0 11 34 60 70 35 36 25 32 11 18 18 36 BS EN 3631:2014EN 3631:2014 (E) 11 6 Fitting 6.1 Fitting for tubes 16 See Figure 5. Figure 5 6.2 Fitting for tubes 16 See Figure 6 and Table 4. Figure 6 BS EN 3631:2014EN 3631:2014 (E) 12 7 Cone and end
35、fitting See Figure 7 and Figure 8 and Table 5. Dimensions in millimetres Key aAt intersection bEnlarged Figure 7 Dimensions in millimetres Key aEnlarged bWeld lip to EN 3635 Figure 8 BS EN 3631:2014EN 3631:2014 (E) 13 Table 5 Dimensions in millimetres Diameter code Tube (0,8 thick) B C F 0 0,1 0,15
36、0 0,1 040 4 4,1 5,1 3,9 060 6 6,1 7,1 5,9 080 8 8,1 9,1 7,9 100 10 10,1 11,1 9,9 120 12 12,1 13,1 11,9 140 14 14,1 15,1 13,9 160 16 16,1 17,1 15,9 180 18 18,1 19,1 17,9 200 20 20,1 21,1 19,9 220 22 22,1 23,1 21,9 250 25 25,1 26,1 24,9 280 28 28,1 29,1 27,9 320 32 32,1 33,1 31,9 8 Designation EXAMPLE
37、 Description block FITTING Identity block EN3631-140-2-A Number of EN standard Diameter code (see Tables) Hole code (see Table 1 to Table 4) Type (see Clause 4 and Clause 5) NOTE If necessary the originator code I9005 shall be placed between the description block and the identity block. 9 Marking EN
38、 2424, Style A, as indicated in the Figures. 10 Quality assurance According to EN 9100. This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is inc
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