1、BSI Standards Publication BS ISO 7169:2014 Aerospace Separable tube fittings for fluid systems, for 24 cones, for pressures up to 3 000 psi or 21 000 kPa Procurement specification, inch/metricBS ISO 7169:2014 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 71
2、69:2014. It supersedes BS ISO 7169:2007 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee ACE/69, Aerospace hydraulic systems, fluids and components. A list of organizations represented on this committee can be obtained on request to its secretary. This
3、 publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014 ISBN 978 0 580 85848 2 ICS 49.080 Compliance with a British Standard cannot confer i
4、mmunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2014. Amendments issued since publication Date Text affectedBS ISO 7169:2014 ISO 2014 Aerospace Separable tube fittings for fluid systems, for 24 cone
5、s, for pressures up to 3 000 psi or 21 000 kPa Procurement specification, inch/metric Aronautique et espace Raccordements sparables de tubes cne de 24 pour circuits de fluides jusqu 3 000 psi ou 21 000 kPa Spcification dapprovisionnement, inch/mtrique INTERNATIONAL STANDARD ISO 7169 Fifth edition 20
6、14-11-15 Reference number ISO 7169:2014(E)BS ISO 7169:2014ISO 7169:2014(E)ii ISO 2014 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2014 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic
7、 or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41
8、22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in SwitzerlandBS ISO 7169:2014ISO 7169:2014(E)Contents Page Foreword iv Introduction v 1 Scope . 1 2 Normative references 1 3 Classification 1 4 Requirements 2 4.1 Qualification 2 4.2 Materials . 2 4.3 Design and ma
9、nufacture . 5 4.4 Surface protection and colour identification 6 4.5 Marking . 7 4.6 Performance 7 4.7 Workmanship . 9 5 Quality assurance provisions .10 5.1 Responsibility for inspection .10 5.2 Inspection lot .10 5.3 Classification of inspections and tests .10 5.4 Quality control records .11 5.5 Q
10、uality conformance inspection procedures .12 5.6 Test conditions .12 6 Preparation for delivery 16 6.1 Cleaning 16 6.2 Preservative material .16 6.3 Packaging 16 6.4 Package identification 16 6.5 Packing for shipment 16 6.6 Inspection .16 Annex A (informative) Equivalent materials and processes17 Bi
11、bliography .20 ISO 2014 All rights reserved iiiBS ISO 7169:2014ISO 7169:2014(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
12、ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates
13、 closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval crit
14、eria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject o
15、f patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade nam
16、e used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technic
17、al Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information The committee responsible for this document is ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 10, Aerospace fluid systems and components. This fifth edition cancels and replaces the fourth edition (ISO 71
18、69:2007), of which it constitutes a minor revision.iv ISO 2014 All rights reservedBS ISO 7169:2014ISO 7169:2014(E) Introduction This International Standard establishes the basic performance and quality criteria for threaded tube fitting assemblies and port connectors used in aerospace fluid systems.
19、 The test requirements are intended to satisfy the most strenuous demands encountered in a high- performance aircraft hydraulic system. The procurement requirements are intended to ensure that fittings, which are procured in accordance with this specification, are of the same quality as the fittings
20、 used during the original qualification testing. Compliance with these test and procurement requirements is necessary for fittings that are used in control systems where a malfunction would affect the safety of flight. ISO 2014 All rights reserved vBS ISO 7169:2014ISO 7169:2014(E)vi ISO 2014 All rig
21、hts reservedBS ISO 7169:2014Aerospace Separable tube fittings for fluid systems, for 24 cones, for pressures up to 3 000 psi or 21 000 kPa Procurement specification, inch/metric 1 Scope This International Standard specifies performance and quality requirements for the qualification and manufacture o
22、f standard 24 cone fittings and manufacture of 24 cone fittings to ensure reliable performance or equivalent inch-dimensioned fitting ends to ensure reliable performance in aircraft hydraulic systems. This International Standard specifies baseline criteria for the design and manufacture of system fi
23、ttings that are qualification-tested on engines. This International Standard covers fittings of the temperature types and pressure classes specified in ISO 6771. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for
24、 its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2859-1, Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed by acceptance quality limit
25、(AQL) for lot-by-lot inspection ISO 3161, Aerospace UNJ threads General requirements and limit dimensions ISO 5855-3, Aerospace MJ threads Part 3: Limit dimensions for fittings for fluid systems ISO 6771, Aerospace Fluid systems and components Pressure and temperature classifications ISO 6772, Aeros
26、pace Fluid systems Impulse testing of hydraulic hose, tubing and fitting assemblies ISO 7257, Aircraft Hydraulic tubing joints and fittings Rotary flexure test ISO 8574, Aerospace Hydraulic system tubing Qualification tests for bent tubes ISO 9538, Aerospace Hydraulic tubing joints and fittings Plan
27、ar flexure test ISO 10583:1993, Aerospace fluid systems Test methods for tube/fitting assemblies 3 Classification Fittings furnished under this International Standard shall be classified as follows: Type A 3 000 psi (20 684 kPa) Pressure System Type B 21 000 kPa (3046 psi) Pressure System When no cl
28、assification is specified, Type B shall apply. INTERNATIONAL ST ANDARD ISO 7169:2014(E) ISO 2014 All rights reserved 1BS ISO 7169:2014ISO 7169:2014(E) 4 Requirements 4.1 Qualification Fittings claiming conformity with this International Standard shall be representative of products which have success
29、fully met the requirements and have passed the tests in this International Standard. 4.1.1 Manufacturer qualification Manufacturer approval shall be granted by an outside agency procedure (see Table A.2, procedure No. 1). 4.1.2 Product qualification Product approval shall be granted by an outside ag
30、ency procedure (see Table A.2, procedure No. 2). 4.2 Materials 4.2.1 Fittings The fitting parts shall be manufactured from materials as given in Table 1 or equivalents passing the specified tests. The various materials shall be used according to the pressure and temperature requirements of the syste
31、m, as shown in Tables 2 to 5. 4.2.2 Tubing The tubing used with the fittings shall be in accordance with the relevant specification or equivalent tubing passing the specified qualification tests. Table 1 Materials for fittings Part Material Ty pe a Material code b Starting stock Material No. c Strai
32、ght fittings and nuts Aluminium alloy I D d Bar, rod 1 W 2 Shape fittings Aluminium alloy I D d Bar and forgings 3 W 2 Straight and shape fittings Carbon steel II F f Bar, rod, forgings 4 Corrosion-resistant steel I, II, III J Bar and forgings 5 I, II, III K 7 I, II, III, IV R 6 I, II, III I, II, II
33、, IV P V 11 11 Titanium alloy I, II, III T Bar and forgings 8 Sleeves (bite type) Carbon steel II F e Bar 9 Sleeves (swaged, brazed) Corrosion-resistant steel I, II, II I, II, II, IV P V Bar 11 11 aTemperature types and system pressure classes are defined in ISO 6771. bSee Table 7. cSee Table A.1. d
34、Inactive for new design, superseded by W. eInactive for new design, no replacement. fInactive for new design, superseded by V.2 ISO 2014 All rights reservedBS ISO 7169:2014ISO 7169:2014(E) Part Material Ty pe a Material code b Starting stock Material No. c Sleeves (welded) Corrosion-resistant steel
35、I, II, III, IV V Bar 11 Titanium alloy I, II, III, IV T 8 aTemperature types and system pressure classes are defined in ISO 6771. bSee Table 7. cSee Table A.1. dInactive for new design, superseded by W. eInactive for new design, no replacement. fInactive for new design, superseded by V. Table 2 Test
36、 requirements, 3 000 psi steel or titanium fittings on steel or titanium tubing Fitting and tube Nominal pressure Proof pressure Burst pressure Flexure test, bending stress 0 % to 10 % Metric Inch Size a Size a kPa (psi) kPa (psi) kPa (psi) kPa (psi) 02 20 684 (3 000) 41 368 (6 000) 82 740 (12 000)
37、135 000 (20 000) DN05 03 DN06 04 DN08 05 DN10 06 DN12 08 DN14 DN16 10 DN20 12 108 000 (16 000) DN25 16 DN32 20 DN40 24 108 000 b (16 000 b) 32 aDash size in 1/16 in, example: 05 = 5/16 in diameter; DN size in millimetres, example: DN05: 5 mm. bNo data available to support this value.Table 1 (continu
38、ed) ISO 2014 All rights reserved 3BS ISO 7169:2014ISO 7169:2014(E) Table 3 Test requirements, 21 000 kPa steel or titanium fittings on steel or titanium tubing Fitting and tube Nominal pressure Proof pressure Burst pressure Flexure test, bending stress 0 % to 10 % Metric Inch Size Size a kPa (psi) k
39、Pa (psi) kPa (psi) kPa (psi) 02 21 000 (3 046) 42 000 (6 091) 84 000 (12 183) 135 000 (20 000) DN05 03 DN06 04 DN08 05 DN10 06 DN12 08 DN14 DN16 10 DN20 12 108 000 (16 000) DN25 16 DN32 20 DN40 24 108 000 b (16 000 b) 32 aDash size in 1/16 in, example: 05 = 5/16 in diameter; DN size in millimetres,
40、example: DN05: 5 mm. bNo data available to support this value. Table 4 Test requirements, return line aluminium fittings, up to 1 500 psi, on aluminium Fitting and tube Nominal pressure Proof pressure Burst pressure Flexure test, bending stress 0 % to 10 % Metric Inch Size a Size a kPa (psi) kPa (ps
41、i) kPa (psi) kPa (psi) 02 10 342 (1 500) 20 684 (3 000) 41 368 (6 000) 41 368 (6 000) DN05 03 DN06 04 DN08 05 DN10 06 DN12 08 37 922 (5 500) DN14 DN16 10 6 845 (1 000) 13 790 (2 000) 27 579 (4 000) DN20 12 6 206 (900) 12 411 (1 800) 24 824 (3 600) 34 474 (5 000) DN25 16 27 579 (4 000) DN32 20 4 137
42、(600) 8 274 (1 200) 16 548 (2 400) DN40 24 27 579 b (4 000 b) 32 aDash size in 1/16 in, example: 05 = 5/16 in diameter; DN size in millimetres, example: DN05: 5 mm. bNo data available to support this value.4 ISO 2014 All rights reservedBS ISO 7169:2014ISO 7169:2014(E) Table 5 Test requirements, retu
43、rn line aluminium fittings, 10 500 kPa, on aluminium tubing Fitting and tube Nominal pressure Proof pressure Burst pressure Flexure test, bending stress 0 % to 10 % Metric Inch Size a Size a kPa (psi) kPa (psi) kPa (psi) kPa (psi) 02 10 500 (1 522) 21 000 (3 046) 42 000 (6 091) 41 368 (6 000) DN05 0
44、3 DN06 04 DN08 05 DN10 06 DN12 08 37 922 (5 500) DN14 DN16 10 DN20 12 34 474 (5 000) DN25 16 27 579 (4 000) DN32 20 DN40 24 27 579 b (4 000 b) 32 aDash size in 1/16 in, example: 05 = 5/16 in diameter; DN size in millimetres, example: DN05: 5 mm. bNo data available to support this value. 4.3 Design a
45、nd manufacture 4.3.1 Threads All threads shall be in accordance with ISO 3161 for inch-size tube fittings, and with ISO 5855-3 for SI- metric tube fittings. Threads can be cut, rolled, or, except for titanium, ground. The external threads of fittings should be rolled and, if machined, shall have an
46、arithmetical mean deviation, R a , of the profile of 3,2 m (0,125 in) or smoother. Rolled threads shall be free of laps, cracks, surface irregularities, and seams on any part of the pressure thread flank, in the thread-root, or on the non-pressure thread flank. Laps and seams whose depths are within
47、 the limits of Table 6 are acceptable on the crest and the non-pressure thread flank above the pitch diameter. Table 6 Maximum depth of laps, seams and surface irregularities in rolled threads Fitting size Depth Metric Inch Size Size a mm (in) 02 0,15 (0,006) DN05 03 0,15 (0,006) DN06 04 0,18 (0,007
48、) DN08 05 0,18 (0,007) DN10 06 0,20 (0,008) DN12 08 0,22 (0,009) DN14 0,25 (0,01) aDash size in 1/16 in, example: 05 = 5/16 in diameter; DN size in millimetres, example: DN05 = 5 mm. ISO 2014 All rights reserved 5BS ISO 7169:2014ISO 7169:2014(E) Fitting size Depth Metric Inch Size Size a mm (in) DN1
49、6 10 0,25 (0,01) DN20 12 0,25 (0,01) DN25 20 0,25 (0,01) DN32 16 0,25 (0,01) DN40 24 0,25 (0,01) 32 0,25 (0,01) aDash size in 1/16 in, example: 05 = 5/16 in diameter; DN size in millimetres, example: DN05 = 5 mm. 4.3.2 Fluid passages On fittings where the fluid passage is drilled from each end, the offset between the drilled holes at the meeting point shall not exceed 0
