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1、BRITISH STANDARD BS ISO 7169:2007 Aerospace Separable tube fittings for fluid systems, for 24 cones, for pressures up to 3 000 psi or 21 000 kPa Procurement specification, inch/metric ICS 49.080 ? Licensed Copy: London South Bank University, London South Bank University, Wed May 16 04:10:55 GMT+00:0
2、0 2007, Uncontrolled Copy, (c) BSI BS ISO 7169:2007 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 May 2007 BSI 2007 ISBN 978 0 580 50674 1 National foreword This British Standard was published by BSI. It is the UK implementation of ISO 7
3、169:2007. It supersedes BS 3M60:1998 which is withdrawn.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 pu
4、blication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: London South
5、 Bank University, London South Bank University, Wed May 16 04:10:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI Reference number ISO 7169:2007(E) INTERNATIONAL STANDARD ISO 7169 Fourth edition 2007-02-01 Aerospace Separable tube fittings for fluid systems, for 24 cones, for pressures up to 3 000 psi
6、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 BS ISO 7169:2007 Licensed Copy: London South Bank University, London South Bank U
7、niversity, Wed May 16 04:10:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ii Licensed Copy: London South Bank University, London South Bank University, Wed May 16 04:10:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iii Contents Page Foreword. v Introduction. vi 1 Scope . 1 2 Normative references. 1
8、3 Classification. 1 4 Requirements 2 4.1 Qualification 2 4.1.1 Manufacturer qualification. 2 4.1.2 Product qualification 2 4.2 Materials 2 4.2.1 Fittings. 2 4.2.2 Tubing 2 4.3 Design and manufacture 5 4.3.1 Threads 5 4.3.2 Fluid passages 5 4.4 Surface protection and colour identification. 5 4.4.1 Su
9、rface protection 5 4.4.2 Colour identification. 6 4.5 Marking 6 4.6 Performance 6 4.6.1 Proof pressure 6 4.6.2 Gaseous pressure. 7 4.6.3 Hydraulic impulse resistance 7 4.6.4 Minimum burst pressure 7 4.6.5 Flexure fatigue resistance . 7 4.6.6 Re-use capability 8 4.6.7 Tensile load capability 8 4.7 Wo
10、rkmanship 8 5 Quality assurance provisions 9 5.1 Responsibility for inspection 9 5.2 Inspection lot. 9 5.2.1 Material certification. 10 5.2.2 Heat-treating certification 10 5.3 Classification of inspections and tests 10 5.3.1 Qualification inspection. 10 5.3.2 Quality conformance inspection. 10 5.4
11、Quality control records 11 5.5 Quality conformance inspection procedures 11 5.5.1 Examination of product 11 5.5.2 Material certification. 11 5.5.3 Rolled threads. 11 5.5.4 Fluid passages 11 5.5.5 Sampling instructions 12 5.6 Test conditions . 12 5.6.1 Test fluids 12 5.6.2 Specimen preparation 12 5.6
12、.3 Lubricants 15 5.6.4 Qualification test procedures 15 5.6.5 Sampling instructions 15 BS ISO 7169:2007 Licensed Copy: London South Bank University, London South Bank University, Wed May 16 04:10:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI iv 6 Preparation for delivery15 6.1 Cleaning.15 6.2 Preser
13、vative material16 6.3 Packaging 16 6.4 Package identification 16 6.5 Packing for shipment16 6.6 Inspection 16 Annex A (informative) Equivalent materials and processes17 Bibliography .20 BS ISO 7169:2007 Licensed Copy: London South Bank University, London South Bank University, Wed May 16 04:10:55 GM
14、T+00:00 2007, Uncontrolled Copy, (c) BSI v 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 ISO technical committees. Each member
15、 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 closely with the International Elect
16、rotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopte
17、d by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
18、 rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 7169 was prepared by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 10, Aerospace fluid systems and components. This fourth edition cancels and replaces the third edition (ISO 7
19、169:1998), which has been technically revised. Criteria for imperial dimension (inch-based) tube fittings, as used for commercial aviation, have been introduced. BS ISO 7169:2007 Licensed Copy: London South Bank University, London South Bank University, Wed May 16 04:10:55 GMT+00:00 2007, Uncontroll
20、ed Copy, (c) BSI vi Introduction This International Standard establishes the basic performance and quality criteria for screw-together tube fitting assemblies and port connectors used in aerospace fluid systems. The test requirements are intended to satisfy the most strenuous demands encountered in
21、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 and procureme
22、nt requirements is necessary for fittings that are used in control systems where a malfunction would affect the safety of flight. BS ISO 7169:2007 Licensed Copy: London South Bank University, London South Bank University, Wed May 16 04:10:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 1 Aerospace Sep
23、arable 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 of standard 24 cone fittings and manufactu
24、re 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 fittings that are qualification-tested on e
25、ngines. This International Standard covers fittings of the temperature types and pressure classes specified in ISO 6771. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated
26、 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 inspection ISO 3161, Aerospace UNJ threads General requirement
27、s 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, Aerospace Fluid systems Impulse testing of hydraulic hose, tubing, and fitting assemblie
28、s ISO 7257, Aircraft Hydraulic tubing joints and fittings Rotary flexure test ISO 8574:1990, Aerospace Hydraulic system tubing Qualification tests ISO 9538, Aerospace Hydraulic tubing joints and fittings Planar flexure test ISO 10583:1993, Aerospace fluid systems Test methods for tube/fitting assemb
29、lies 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 classification is specified Type B shall apply. BS ISO 7169:2007 Licensed Copy: London South B
30、ank University, London South Bank University, Wed May 16 04:10:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 2 4 Requirements 4.1 Qualification Fittings claiming conformity with this International Standard shall be representative of products which have successfully met the requirements and have pass
31、ed the tests in this International Standard. 4.1.1 Manufacturer qualification Manufacturer approval shall be granted by an outside agency procedure (see Annex A, Table A.2, procedure No. 1). 4.1.2 Product qualification Product approval shall be granted by an outside agency procedure (see Annex A, Ta
32、ble 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 system, as shown in Tables
33、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 Type a Material code b Starting stock Material No. c D d 1 Straight fittings and
34、nuts Aluminium alloy I W Bar, rod 2 D d 3 Shape fittings Aluminium alloy I W Bar and forgings 2 Carbon steel II F f Bar, rod, forgings 4 I, II, III J 5 I, II, III K 7 I, II, III, IV R 6 Corrosion-resistant steel I, II, III I, II, II, IV P V Bar and forgings 11 11 Straight and shape fittings Titanium
35、 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 Corrosion-resistant steel I, II, III, IV V 11 Sleeves (welded) Titanium alloy I, II, III, IV T Bar 8 a Temperature types and s
36、ystem pressure classes are defined in ISO 6771. b See Table 7. c See also Annex A, Table A.1. d Inactive for new design, superseded by W. e Inactive for new design, no replacement. f Inactive for new design, superseded by V. BS ISO 7169:2007 Licensed Copy: London South Bank University, London South
37、Bank University, Wed May 16 04:10:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 Table 2 Test requirements, 3 000 psi steel or titanium fittings on steel or titanium tubing Fitting and tube Metric Inch Nominal pressure Proof pressure Burst pressure Flexure test, bending stress 0 % to 10 % Size a Si
38、ze a kPa (psi) kPa (psi) kPa (psi) kPa (psi) 02 DN05 03 DN06 04 DN08 05 DN10 06 DN12 08 DN14 DN16 10 135 000 (20 000) DN20 12 DN25 16 DN32 20 108 000 (16 000) DN40 24 32 20 684 (3 000) 41 368 (6 000) 82 740 (12 000) 108 000 b (16 000 b) a Dash size in 1/16 in, example: 05 = 5/16 in diameter; DN size
39、 in millimetres, example: DN05: 5 mm. b No data available to support this value. Table 3 Test requirements, 21 000 kPa steel or titanium fittings on steel or titanium tubing Fitting and tube Metric Inch Nominal pressure Proof pressure Burst pressure Flexure test, bending stress 0 % to 10 % Size a Si
40、ze a kPa (psi) kPa (psi) kPa (psi) kPa (psi) 02 DN05 03 DN06 04 DN08 05 DN10 06 DN12 08 DN14 DN16 10 135 000 (20 000) DN20 12 DN25 16 DN32 20 108 000 (16 000) DN40 24 32 21 000 (3 046) 42 000 (6 091) 84 000 (12 183) 108 000 b (16 000 b) a Dash size in 1/16 in, example: 05 = 5/16 in diameter; DN size
41、 in millimetres, example: DN05: 5 mm. b No data available to support this value. BS ISO 7169:2007 Licensed Copy: London South Bank University, London South Bank University, Wed May 16 04:10:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 4 Table 4 Test requirements, return line aluminium fittings, up
42、to 1 500 psi, on aluminium Fitting and tube Metric Inch Nominal pressure Proof pressure Burst pressure Flexure test, bending stress 0 % to 10 % Size a Size a kPa (psi) kPa (psi) kPa (psi) kPa (psi) 02 DN05 03 DN06 04 DN08 05 DN10 06 41 368 (6 000) DN12 08 DN14 10 342 (1 500) 20 684 (3 000) 41 368 (6
43、 000) DN16 10 6 845 (1 000) 13 790 (2 000) 27 579 (4 000) 37 922 (5 500) DN20 12 34 474 (5 000) DN25 16 6 206 (900) 12 411 (1 800) 24 824 (3 600) DN32 20 27 579 (4 000) DN40 24 32 4 137 (600) 8 274 (1 200) 16 548 (2 400) 27 579 b (4 000 b) a Dash size in 1/16 in, example: 05 = 5/16 in diameter; DN s
44、ize in millimetres, example: DN05: 5 mm. b No data available to support this value. Table 5 Test requirements, return line aluminium fittings, 10 500 kPa, on aluminium tubing Fitting and tube Metric Inch Nominal pressure Proof pressure Burst pressure Flexure test, bending stress 0 % to 10 % Size a S
45、ize a kPa (psi) kPa (psi) kPa (psi) kPa (psi) 02 DN05 03 DN06 04 DN08 05 DN10 06 41 368 (6 000) DN12 08 DN14 DN16 10 37 922 (5 500) DN20 12 34 474 (5 000) DN25 16 DN32 20 27 579 (4 000) DN40 24 32 10 500 (1 522) 21 000 (3 046) 42 000 (6 091) 27 579 b (4 000 b) a Dash size in 1/16 in, example: 05 = 5
46、/16 in diameter; DN size in millimetres, example: DN05: 5 mm. b No data available to support this value. BS ISO 7169:2007 Licensed Copy: London South Bank University, London South Bank University, Wed May 16 04:10:55 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 5 4.3 Design and manufacture 4.3.1 Threa
47、ds 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 may be cut, rolled or, except for titanium, ground. The external threads of fittings should be rolled and, if machined, shall have an arithmetical mean deviation,
48、 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 within the limits of Table 6 are acce
49、ptable 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 Metric Inch Depth Size Size a mm (in) 02 0,15 (0,006) DN05 03 0,15 (0,006) DN06 04 0,18 (0,007) DN08 05 0,18 (0,007) DN10 06 0,20 (0,008) DN12 08 0,22 (0,009) DN14 0,25 (0,01) DN