ISO 7169:2014
(Main)Aerospace — Separable tube fittings for fluid systems, for 24 degree cones, for pressures up to 3 000 psi or 21 000 kPa — Procurement specification, inch/metric
Aerospace — Separable tube fittings for fluid systems, for 24 degree cones, for pressures up to 3 000 psi or 21 000 kPa — Procurement specification, inch/metric
ISO 7169:2014 specifies performance and quality requirements for the qualification and manufacture of 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 fittings that are qualification-tested on engines. This International Standard covers fittings of the temperature types and pressure classes specified in ISO 6771.
Aéronautique et espace — Raccordements séparables de tubes à cône de 24 degrés pour circuits de fluides jusqu'à 3 000 psi ou 21 000 kPa — Spécification d'approvisionnement, inch/métrique
General Information
Relations
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 7169
Fifth edition
2014-11-15
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
Aéronautique et espace — Raccordements séparables de tubes à cône
de 24° pour circuits de fluides jusqu’à 3 000 psi ou 21 000 kPa —
Spécification d’approvisionnement, inch/métrique
Reference number
©
ISO 2014
ISO 7169:2014(E)
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 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 ISO’s member body in the country of
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2014 – All rights reserved
ISO 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 manufacture . 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 Quality 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 processes.17
Bibliography .20
ISO 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 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 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 criteria 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 of
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 name 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 ISO’s adherence to the WTO principles in the Technical 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 7169:2007), of which it constitutes a
minor revision.
iv © ISO 2014 – All rights reserved
ISO 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.
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 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 7169:2014(E)
vi © ISO 2014 – All rights reserved
INTERNATIONAL STANDARD ISO 7169:2014(E)
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
1 Scope
This 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 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 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 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 (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, Aerospace — 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 — Planar 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 classification is specified, Type B shall apply.
ISO 7169:2014(E)
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 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 agency 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 system, 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
Material
a b
Part Material Type Material code Starting stock
c
No.
d
D 1
Straight fittings and nuts Aluminium alloy I Bar, rod
W 2
d
D 3
Shape fittings Aluminium alloy I Bar and forgings
W 2
f
Carbon steel II F Bar, rod, forgings 4
I, II, III J 5
I, II, III K 7
Straight and shape fittings Corrosion-resistant steel Bar and forgings
I, II, III, IV R 6
I, II, III P 11
I, II, II, IV V 11
Titanium alloy I, II, III T Bar and forgings 8
e
Sleeves (bite type) Carbon steel II F Bar 9
I, II, II P 11
Sleeves (swaged, brazed) Corrosion-resistant steel Bar
I, II, II, IV V 11
a
Temperature types and system pressure classes are defined in ISO 6771.
b
See Table 7.
c
See 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.
2 © ISO 2014 – All rights reserved
ISO 7169:2014(E)
Table 1 (continued)
Material
a b
Part Material Type Material code Starting stock
c
No.
Corrosion-resistant steel I, II, III, IV V 11
Sleeves (welded) Bar
Titanium alloy I, II, III, IV T 8
a
Temperature types and system pressure classes are defined in ISO 6771.
b
See Table 7.
c
See Table A.1.
d
Inactive for new design, superseded by W.
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.