1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 3631 Edition P 2 December 2012 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.orgICS: Supersedes edition P
2、1 of August 1993 and will supersede EN 3631:2008Descriptors: ENGLISH VERSION Aerospace series Fluid fittings, flanged, 90 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
3、mit Flansch, 90 O-Ring-Dichtung fr Rohre mit einer Dicke von 0,8 mm This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Indus
4、try. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identificatio
5、n of the standard. After examination and review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to
6、 implement the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 1 December 2012 Comments should be sent within six months after the date of publication to ASD-STAN Mechanical Do
7、main Copyright 2012 by ASD-STAN prEN 3631:2012 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Required characteristics . 4 3.1 Configuration, dimensions, tolerances . 4 4 Forging flanged fitting, Type A . 5 5 Machined flanged fitting, Type B . 8 6 Fitting 11 6.1 Fitting for tube
8、s 16 . 11 6.2 Fitting for tubes 16 . 11 7 Cone and end fitting 12 8 Designation 13 9 Marking . 13 10 Quality assurance 13 Figures Figure 1 . 5 Figure 2 . 6 Figure 3 . 8 Figure 4 . 9 Figure 5 . 11 Figure 6 . 11 Figure 7 . 12 Figure 8 . 12 Tables Table 1 . 7 Table 2 . 7 Table 3 . 10 Table 4 . 10 Table
9、 5 . 13 prEN 3631:2012 (E) 3 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Mechanical Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Pub
10、lication. prEN 3631:2012 (E) 4 1 Scope This 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 referenced docu
11、ments 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 2157-3, Aerospace series Steel Forging stock and forgings Technical specifi
12、cation 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 (X6CrNiTi18-10) Air melted Softened B
13、ar 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 Organizations TR 3634, Aerospace ser
14、ies Fluid fittings, flanged Assembly recommendations 2)3 Required characteristics 3.1 Configuration, dimensions, tolerances 3.1.1 Configuration See Figures 1 to 8. 3.1.2 Dimensions and tolerances See Figures 1 to 8 and Tables 1 to 5. 3.2 Material EN 3487 or EN 3482. Fittings can be machined or forge
15、d according to EN 2157-3. 1) Published as ASD-STAN Prestandard at the date of publication of this standard (www.asd-stan.org). 2) Published as ASD-STAN Technical Report at the date of publication of this standard (www.asd-stan.org). prEN 3631:2012 (E) 5 4 Forging flanged fitting, Type A See Figures
16、1 and 2 and Tables 1 and 2. Dimensions in millimetres Break sharp edges 0,1 mm to 0,3 mm aSee Figure 8 bSee Figure 7 cTwo holes 5,400,2dMarking eTwo identical 11 spot facings or straight profile Figure 1 3,2 6,4 prEN 3631:2012 (E) 6 Dimensions in millimetres Break sharp edges 0,1 mm to 0,3 mm For tu
17、be = 32 these spot facings do not overlap fitting body aSee Figure 8 bSee Figure 7 cThree equidistant holes 5,400,2dMarking eThree identical 11 spot facings Figure 2 3,2 6,4 prEN 3631:2012 (E) 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
18、. H11 0,05 0,15 0,7 0,3 0 0,5 0,7 0,3 0 0,5 0,15 0,35 0,15040 2 4 2,3 0,0750 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 0,090 10 22 19 22,8 32 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 0,110 14 26 23 25,5 36 16 14 23,5 8 8 140 14
19、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 R V nom. tol. H11 0,2 0,05 0,150 0,5 0,7 0,3 0 0,5 0,15 0,35 0,15140 3 14 12,3 0,110 4 16 31 41 26,5 18 15 24,5 9 9 160 16 1
20、4,3 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 0,130 5 22 38 48 29 24 18 26,5 12 12 220 22 20,3 24 40 50 30 26 19,5 27 13 13 250 25 23,3 27 46 56 31 29 21 28,5 14,514,5 280 28 26,3 30 52 62 32,5 32 23 30 16 16 320 32 30,3 0,160 34 60 70 35 36 25 32 18 18 prEN
21、 3631:2012 (E) 8 5 Machined flanged fitting, Type B See Figures 3 and 4 and Tables 3 and 4. Dimensions in millimetres Break sharp edges 0,1 mm to 0,4 mm aSee Figure 8 bSee Figure 7 cTwo holes 5,400,2dMarking eTwo identical 11 spot facings Figure 3 3,2 prEN 3631:2012 (E) 9 Dimensions in millimetres B
22、reak sharp edges 0,1 mm to 0,3 mm For tube = 32 these spot facings do not overlap fitting body aSee Figure 8 bSee Figure 7 cThree equidistant holes 5,400,2dMarking eThree identical 11 spot facings Figure 4 3,2 prEN 3631:2012 (E) 10 Table 3 Dimensions in millimetres Diameter code Hole code Tube (0,8
23、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 0,15040 2 4 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 3
24、4 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 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
25、V W nom. tol. H11 0,2 0,2 0,05 0,15 0 0,5 0,20 0,5 0,15 0,2 0,2 0,15140 3 14 12,3 0,11 0 4 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
26、 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 26,3 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 prEN 3631:2012 (E) 11 6 Fitting 6.1 Fitting for tubes 16 See Figure 5. Figure 5 6.2 Fitting for tubes 16 See Figure 6
27、 and Table 4. Figure 6 prEN 3631:2012 (E) 12 7 Cone and end fitting See Figures 7 and 8 and Table 5. Dimensions in millimetres aAt intersection bEnlarged Figure 7 Dimensions in millimetres aEnlarged bWeld lip to EN 3635 Figure 8 prEN 3631:2012 (E) 13 Table 5 Dimensions in millimetres Diameter code T
28、ube (0,8 thick) B C F 0 0,1 0,15 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,
29、1 33,1 31,9 8 Designation EXAMPLE Description block FITTING Identity block EN3631-140-2-A Number of EN standard Diameter code (see Tables) Hole code (see Tables 1 to 4) Type (see Clauses 4 and 5) NOTE If necessary the originator code I9005 shall be placed between the description block and the identi
30、ty block. 9 Marking EN 2424, Style A, as indicated in the Figures. 10 Quality assurance According to EN 9100. Annex A (informative) Standard evolution form MODIFICATION REASON AND VALIDATION Page 4 paragraph 2: References: Before: After: added EN 3487 and EN 9100 Added material for machining (type B
31、 fitting), and quality system requirement. Page 4 paragraph 3: Material Before: After: added EN3487 Added material for machining (type B fitting). Page 5 section A-A: K dimension changed: Before: Dimension lines for P and K measure the same points. After: K is longer and measures the depth of the de
32、eper port. Correction as per 1993 edition. Page 6 section A-A: K dimension changed: Before: Dimension lines for P and K measure the same points. After: K is longer and measures the depth of the deeper port. Correction as per 1993 edition. Page 8 section A-A: K dimension changed: Before: Dimension li
33、nes for P and K measure the same points. After: K is longer and measures the depth of the deeper port. Correction as per 1993 edition. Page 9, Figure 4, section A-A, dimension W: Before: W starts from external flange After: W starts from face A Correction as per 1993 edition. Page 10, Table 3: W dim
34、ension changed: Before: EN 3631-040-2-B : 19.5 EN 3631-060-2-B : 20.5 EN 3631-080-2-B : 21.5 EN 3631-100-2-B : 22.5 EN 3631-120-2-B : 23.5 EN 3631-140-2-B : 24.5 EN 3631-160-2-B : 25.5 After: EN 3631-040-2-B : 08 EN 3631-060-2-B : 10 EN 3631-080-2-B : 12 EN 3631-100-2-B : 14 EN 3631-120-2-B : 16 EN
35、3631-140-2-B : 18 EN 3631-160-2-B : 20 Correction. Dimension W for type 2 holes should not be bigger than for 3 holes. Actually W should be equal to 2 times R. Page 10, Table 3: tolerance H11 for diam. codes 040 and 060: Before: +0.75 After: +0.075 Correction. Page 13, Paragraph 10, Quality assurance: Before: According to EN 2000 After: According to EN 9100
