1、O Edition approved for publication 5th December 1989 O O O Comments should be sent within six months C4 Chairman after the dateof publication decision A.E.C.M.A. 88, Ed. Malesherbes Mr. Staib 75008 PARIS - FRANCE prEN 3273 A. E. C. M. A. STAN DAR D NORM E A. E.C. M .A. A.E.C.M.A. NORM December 1989
2、Issue P 1 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL 88, boulevard Malesherbes, 75008 PARIS -TL. 45-63-82-85 UDC : Key words : ENGLISH VERSION Aerospace series Pipe coupling 8030 Dynamic beam seal end for elbows, tees and crosses Geometric configuration Srie arospatiale R
3、accordement 8030 Joint lvre, pour raccords 900 raccords en t et raccords en croix Configuration gomtrique Luft- und Raumfahrt Rohrverschraubung 8030 Dichtlippe fr Winket-, T-Stcke und Kreuzstcke Konstruktionsblatt This (Aerospace Series pre-standard has been drawn up under the responsibility of AECM
4、A (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Commission follo wing comment by the Member countries. Subsequent to the publication of this pre-standard
5、, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Membe
6、r countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for final vote. I aecrna 1989 AECMA PREN3273 87 W L02232L 0005Lbll O W j prEN 3273 Page 2 Contents Scope and field of application References Required. characteristics 4 Designation CAE Inter
7、est: Fume revision ot Ihrs standard c/ia/ ho cuordinaieJ .%rr). . I. AECMA PREN3273 A a LO1231 0005165 3 pmp prEN 3273 Page 3 1 Scope and field of application This standard specifies the dimensional characteristics of the dynamic beam seal end to be used for the design and manufacture of product sta
8、ndards for pipe fittings wherever this geometry is specified. Nominal pressure : 28 O00 KPa 2 References EN 3274 Aerospace series - Pipe coupling 830 - Thread end - Geometric configuration 1) . EN 3275 Aerospace series - Pipe coupling 830 - Dynamic beam seal up to 28 O00 KPa - Metric series - Techni
9、cal specification 1) I) Published as AECMA pre-standard AECMA PREN3-273 q W LOL23LL 0005366 4 prEN 3273 Page 4 3 Required characteristics 3.1 Conf igurat ion-Dimens ions-Tolerances The configuration shall be in accordance with the figure; the dimensions and tolerances shall conform with the values s
10、hown in the figure and table. Dimensions and tolerances not quoted are at manuf actuererc option subject to meeting the qual if ication and acceptance requirements of EN 3275 type II. 3.2 Surface roughness See figure. Unless other vaiues of referenced design standards are specified. “? Break all sha
11、rp -I-? Form of the dyn.beam seal (see clause 3.1) edges 0.1 mm to 0.4 mrn DETAIL X 1 Dtarneter per I EN 3274 Form C Figure - Configuration .AECMA PREN3273 89 LOL23LL 0005Lb b prEA 3273 Page 5 Tabe Dimensions - tolerances DN 1) 0A O -0.1 OE Ref Dimensions in millimetres QJF G L R 5 O IO Ref -0.1 IO.
12、1 -0.1 IO.1 04 05 06 08 10 12 14 16 18 20 22 25 28 32 9.2 I1 ,I 11.9 13.8 15.8 4.6 6.6 8.3 10.0 12.0 13.5 15.5 17.5 19.0 22.0 25.0 28.0 31.0 34.0 I -11.86 14.0 3.8 1 ,O 0.25 13.82 16.0 3.9 1.2 0.5 15.28 18.0 4.0 1.2 0.5 17.23 20.0 4.2 1.2 0.5 19.23 22.0 4.3 1.5 0,75 18.5 21.3 22.9 26.1 28.8 1) DN = Diameter Nomtnat (outstde dto. of the correspondtng ptpe) 22.10 25.0 4.3 1.5 0.75 25.01 28.0 4.3 1.5 0.75 27.38 31 .O 4.3 1.5 0.75 30.47 34.0 4.3 1.5 0.75 33.47 37.0 4.5 1.5 0.75 4 Designation
