1、BSI Standards PublicationBS ISO 7169:2014Aerospace Separable tubefittings for fluid systems, for24 cones, for pressuresup to 3 000 psi or 21 000 kPa Procurement specification,inch/metricBS ISO 7169:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of ISO 7169:2014.
2、 Itsupersedes BS ISO 7169:2007 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/69, Aerospace hydraulic systems, fluids andcomponents.A list of organizations represented on this committee can beobtained on request to its secretary.This publication do
3、es not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 85848 2ICS 49.080Compliance with a British Standard cannot confer immunity fromlegal obl
4、igations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2014.Amendments issued since publicationDate Text affectedBS ISO 7169:2014 ISO 2014Aerospace Separable tube fittings for fluid systems, for 24 cones, for pressures up to 3 00
5、0 psi or 21 000 kPa Procurement specification, inch/metricAronautique et espace Raccordements sparables de tubes cne de 24 pour circuits de fluides jusqu 3 000 psi ou 21 000 kPa Spcification dapprovisionnement, inch/mtriqueINTERNATIONAL STANDARDISO7169Fifth edition2014-11-15Reference numberISO 7169:
6、2014(E)BS ISO 7169:2014ISO 7169:2014(E)ii ISO 2014 All rights reservedCOPYRIGHT PROTECTED DOCUMENT ISO 2014All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopyin
7、g, 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 officeCase postale 56 CH-1211 Geneva 20Tel. + 41 22 749 01 11Fax + 41 22 749 09 47E-mail
8、copyrightiso.orgWeb www.iso.orgPublished in SwitzerlandBS ISO 7169:2014ISO 7169:2014(E)Contents PageForeword ivIntroduction v1 Scope .12 Normative references 13 Classification 14 Requirements 24.1 Qualification 24.2 Materials . 24.3 Design and manufacture . 54.4 Surface protection and colour identif
9、ication 64.5 Marking . 74.6 Performance 74.7 Workmanship . 95 Quality assurance provisions .105.1 Responsibility for inspection . 105.2 Inspection lot . 105.3 Classification of inspections and tests . 105.4 Quality control records . 115.5 Quality conformance inspection procedures . 125.6 Test condit
10、ions . 126 Preparation for delivery 166.1 Cleaning 166.2 Preservative material . 166.3 Packaging 166.4 Package identification 166.5 Packing for shipment 166.6 Inspection . 16Annex A (informative) Equivalent materials and processes17Bibliography .20 ISO 2014 All rights reserved iiiBS ISO 7169:2014ISO
11、 7169:2014(E)ForewordISO (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 ISO technical committees. Each member body interested in a subject f
12、or 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 closely with the International Electrotechnical Commission (IEC) on
13、 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 criteria needed for the different types of ISO documents should be noted.
14、 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 of patent rights. ISO shall not be held responsible for identifying an
15、y 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 name used in this document is information given for the convenience of u
16、sers 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 Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplemen
17、tary informationThe 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 7169:2007), of which it constitutes a minor revision.iv ISO 2014 All right
18、s reservedBS ISO 7169:2014ISO 7169:2014(E)IntroductionThis International Standard establishes the basic performance and quality criteria for threaded tube fitting assemblies and port connectors used in aerospace fluid systems.The test requirements are intended to satisfy the most strenuous demands e
19、ncountered 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 used during the original qualification testing. Compliance with these test
20、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 rights reservedBS ISO 7169:2014Aerospace Separable tube fittings for fluid syst
21、ems, for 24 cones, for pressures up to 3 000 psi or 21 000 kPa Procurement specification, inch/metric1 ScopeThis International Standard specifies performance and quality requirements for the qualification and manufacture of standard 24 cone fittings and manufacture of 24 cone fittings to ensure reli
22、able 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 fittings that are qualification-tested on engines.This International Standard cov
23、ers fittings of the temperature types and pressure classes specified in ISO 6771.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undate
24、d 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 (AQL) for lot-by-lot inspectionISO 3161, Aerospace UNJ threads General requirements
25、 and limit dimensionsISO 5855-3, Aerospace MJ threads Part 3: Limit dimensions for fittings for fluid systemsISO 6771, Aerospace Fluid systems and components Pressure and temperature classificationsISO 6772, Aerospace Fluid systems Impulse testing of hydraulic hose, tubing and fitting assembliesISO
26、7257, Aircraft Hydraulic tubing joints and fittings Rotary flexure testISO 8574, Aerospace Hydraulic system tubing Qualification tests for bent tubesISO 9538, Aerospace Hydraulic tubing joints and fittings Planar flexure testISO 10583:1993, Aerospace fluid systems Test methods for tube/fitting assem
27、blies3 ClassificationFittings furnished under this International Standard shall be classified as follows:Type A 3 000 psi (20 684 kPa) Pressure SystemType B 21 000 kPa (3046 psi) Pressure SystemWhen no classification is specified, Type B shall apply.INTERNATIONAL STANDARD ISO 7169:2014(E) ISO 2014 A
28、ll rights reserved 1BS ISO 7169:2014ISO 7169:2014(E)4 Requirements4.1 QualificationFittings claiming conformity with this International Standard shall be representative of products which have successfully met the requirements and have passed the tests in this International Standard.4.1.1 Manufacture
29、r qualificationManufacturer approval shall be granted by an outside agency procedure (see Table A.2, procedure No. 1).4.1.2 Product qualificationProduct approval shall be granted by an outside agency procedure (see Table A.2, procedure No. 2).4.2 Materials4.2.1 FittingsThe fitting parts shall be man
30、ufactured 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 system, as shown in Tables 2 to 5.4.2.2 TubingThe tubing used with the fittings shall be in accordance with the r
31、elevant specification or equivalent tubing passing the specified qualification tests.Table 1 Materials for fittingsPart Material TypeaMaterial codebStarting stockMaterial No.cStraight fittings and nuts Aluminium alloy IDdBar, rod1W 2Shape fittings Aluminium alloy IDdBar and forgings3W 2Straight and
32、shape fittingsCarbon steel II FfBar, rod, forgings 4Corrosion-resistant steelI, II, III JBar and forgings5I, II, III K 7I, II, III, IV R 6I, II, III I, II, II, IVP V11 11Titanium alloy I, II, III T Bar and forgings 8Sleeves (bite type) Carbon steel II F eBar 9Sleeves (swaged, brazed) Corrosion-resis
33、tant steelI, II, II I, II, II, IVP VBar11 11aTemperature 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.2 ISO 2014 All rights reservedBS
34、 ISO 7169:2014ISO 7169:2014(E)Part Material TypeaMaterial codebStarting stockMaterial No.cSleeves (welded)Corrosion-resistant steel I, II, III, IV VBar11Titanium alloy I, II, III, IV T 8aTemperature types and system pressure classes are defined in ISO 6771.bSee Table 7.cSee Table A.1.dInactive for n
35、ew design, superseded by W.eInactive for new design, no replacement.fInactive for new design, superseded by V.Table 2 Test requirements, 3 000 psi steel or titanium fittings on steel or titanium tubingFitting and tubeNominal pressure Proof pressure Burst pressureFlexure test, bending stress 0 % to 1
36、0 %Metric InchSizeaSizeakPa (psi) kPa (psi) kPa (psi) kPa (psi) 0220 684 (3 000) 41 368 (6 000) 82 740 (12 000)135 000 (20 000)DN05 03DN06 04DN08 05DN10 06DN12 08DN14 DN16 10DN20 12108 000 (16 000)DN25 16DN32 20DN40 24108 000b(16 000b) 32aDash size in 1/16 in, example: 05 = 5/16 in diameter; DN size
37、 in millimetres, example: DN05: 5 mm.bNo data available to support this value.Table 1 (continued) 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 tubingFitting and tubeNominal pressure Proof pressure
38、Burst pressureFlexure test, bending stress 0 % to 10 %Metric InchSize SizeakPa (psi) kPa (psi) kPa (psi) kPa (psi) 0221 000 (3 046) 42 000 (6 091) 84 000 (12 183)135 000 (20 000)DN05 03DN06 04DN08 05DN10 06DN12 08DN14 DN16 10DN20 12108 000 (16 000)DN25 16DN32 20DN40 24108 000 b(16 000b) 32aDash size
39、 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 4 Test requirements, return line aluminium fittings, up to 1 500 psi, on aluminiumFitting and tubeNominal pressure Proof pressure Burst pressureFlexure test, bendin
40、g stress 0 % to 10 %Metric InchSize aSize akPa (psi) kPa (psi) kPa (psi) kPa (psi) 0210 342 (1 500) 20 684 (3 000) 41 368 (6 000)41 368 (6 000)DN05 03DN06 04DN08 05DN10 06DN12 0837 922 (5 500)DN14 DN16 10 6 845 (1 000) 13 790 (2 000) 27 579 (4 000)DN20 126 206 (900) 12 411 (1 800) 24 824 (3 600)34 4
41、74 (5 000)DN25 1627 579 (4 000)DN32 204 137 (600) 8 274 (1 200) 16 548 (2 400)DN40 2427 579 b(4 000b) 32aDash 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 7169:2
42、014(E)Table 5 Test requirements, return line aluminium fittings, 10 500 kPa, on aluminium tubingFitting and tubeNominal pressure Proof pressure Burst pressureFlexure test, bending stress 0 % to 10 %Metric InchSize aSize akPa (psi) kPa (psi) kPa (psi) kPa (psi) 0210 500 (1 522) 21 000 (3 046) 42 000
43、(6 091)41 368 (6 000)DN05 03DN06 04DN08 05DN10 06DN12 0837 922 (5 500)DN14 DN16 10DN20 12 34 474 (5 000)DN25 1627 579 (4 000)DN32 20DN40 2427 579b(4 000b) 32aDash 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
44、 Design and manufacture4.3.1 ThreadsAll 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 hav
45、e an arithmetical mean deviation, Ra, 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 with
46、in 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 threadsFitting sizeDepthMetric InchSize Sizeamm (in) 02 0,15 (0,006)DN05 03 0,15 (0,006)DN06 04 0,18 (0,007)DN08 0
47、5 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 sizeDepthMetric InchSize Sizeamm (in)DN16 10 0,25 (0,01)DN2
48、0 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 passagesOn fittings where the fluid passage is drilled from each end, the offset between the drilled
49、 holes at the meeting point shall not exceed 0,4 mm (0,015 in). It shall be possible to pass through the fitting passage a ball whose diameter is 0,5 mm (0,020 in) less than the minimum diameter specified for the passage.4.4 Surface protection and colour identification4.4.1 Surface protectionThe surfaces of fitting parts shall be protected in the following manner:a) Aluminium alloy fittings:
