1、CEN PREN83b9 94 3404589 00b2343 490 = Edition approved for publication 1994-05-31 AECMA STANDARD NORME AECMA AECMA NORM Comments should be sent within six months after the date of publication to AECMA Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE C8 Chairman
2、M. Williams prEN 3869 Edition PI May 1994 EDIT PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATERIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 UDC : Descriptors : ENGLISH VERSION Aerospace series Pipe couplings, loose flange
3、s and seals Seals in fluorocarbon rubber and armature in aluminium alloy Srie arospatiale Raccords, brides amovibles et joints Joints en lastomre fluorocarbone et armature en alliage daluminium Luft- und Raumfahrt Rohrverbindungen mit losen Flanschen und Flachdichtung Dichtung aus Fluor-Elastomer mi
4、t Aluminiumarmierung This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (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 concerne
5、d Technical Committee following comment by the Member countries. 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-identification of the standard. After examination an
6、d signature of the AECMA Standard Checking Centre INPSI and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. CEN PRENa3869 9Y = 340Y589 00623YY 327 H Page 3 prEN 3869 :
7、 1994 1 Scope This standard specifies the characteristics of seals for pipe couplings in fluorocarbon rubber and armature in aluminium alloy for aerospace applications. NOTE : Assembly in accordance with TR 4053 2 Normative references EN 2424 Aerospace series - Marking of aerospace products 1) EN 26
8、99 Aerospace series - Aluminium alloy (5086) - Annealed and straightened (HI 11) - Drawn bar - 6 I D I50 mm 1) EN 2798 Aerospace series - Fluorocarbon rubber (FPM) - Low compression set - Hardness 80 IRHD 2) O EN 4054 Aerospace series - Pipe couplings, loose flanges and seals - Seals in fluorocarbon
9、 rubber and armature in aluminium alloy - Technical specification 2) TR 4053 Aerospace series - Pipe couplings, loose flanges and seals, in titanium alloy - Assembly recommendations 3) 3 Required characteristics 3.1 Configuration - Dimensions - Tolerances - Masses See figure 1 and table 1. Dimension
10、s and tolerances are in millimetres. 3.2 Materials EN 2699 and EN 2798 e 3.3 Adherisation Two parts seal shall be adherised. Previous page is blank 0 1 ) Published as AECMA Standard at the date of publication of this standard 2) In preparation at the date of publication of this standard 3) Published
11、 as AECMA Technical Report at the date of publication of this standard P=- CEN PRENx3869 94 W 3404589 0062345 263 = Page 4 prEN 3869 : 1994 All surface except rubber parts Remove sharp edges 0,2 to 0,4 3 Equidistant holes al 5.4 Hl3 w 1) Form not stated are left to the manufacturers discretion. Cali
12、bration of sealing part dimensioning should not allow any bead outside lateral cavities while squeezing. Figure 1 Table 1 - CEN PREN*38b7 74 3404587 006234b LTT Page 5 prEN 3869 : 1994 4 Designation EXAMPLE : Description block Identity block PIPE COUPLING, SEAL Number of this standard Diameter code (see table 1) NOTE : If necessary, the code 19005 shall be placed between the description block and the identity block. 5 Identification marking EN 2424, category G 6 Technical specification EN 4054
