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International
Standard
ISO 11619
First edition
Pneumatic fluid power —
2024-07
Polyurethane and polyamide
tubings for use primarily in
pneumatic installations —
Dimensions and specification
Transmissions pneumatiques — Tubes en polyuréthane et en
polyamide destinés à être utilisés principalement dans des
installations pneumatiques — Dimensions et spécifications
Reference number
© ISO 2024
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ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Materials and construction . 1
5 Dimensions and tolerances . 2
5.1 Outside and inside diameters, wall thickness and tolerances .2
5.1.1 Polyurethane tubing .2
5.1.2 Polyamide tubings .3
5.1.3 Length tolerances .4
6 Performance requirements . . 4
6.1 Hydrostatic testing at 23 °C ± 2 °C .4
6.1.1 General .4
6.1.2 Polyurethane tubing hydrostatic testing .4
6.2 Polyamide hydrostatic testing . . .5
6.3 Hydrostatic testing at high temperature .6
6.3.1 General .6
6.3.2 Polyurethane hydrostatic testing .6
6.3.3 Polyamide hydrostatic testing .7
6.4 Maximum working pressure .8
6.4.1 Polyurethane tubing .8
6.4.2 Polyamide tubing .9
6.5 Minimum bend radius .10
6.5.1 Polyurethane tubing bending radius .10
6.5.2 Polyamide tubing bending radius .11
6.6 UV ageing testing . 12
7 Type, routine and production testing .12
8 Marking . .12
9 Recommendations for packing and storage .12
Annex A (normative) Test frequency .13
Bibliography . 14
iii
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,
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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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
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related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee SC 4,
Connectors and similar products and components.
This first edition cancels and replaces the first edition of ISO/TS 11619:2014, which has been technically
revised.
The main changes are as follows:
— extension of the scope to polyamide tubings;
— addition of new sizes for polyurethane tubings.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
iv
Introduction
This document has been prepared to provide minimum acceptable requirements for the satisfactory
performance of thermoplastic polyurethane and polyamide tubing used mainly in pneumatic applications.
The tubing conveys compressed air which controls and powers pneumatic systems.
v
International Standard ISO 11619:2024(en)
Pneumatic fluid power — Polyurethane and polyamide
tubings for use primarily in pneumatic installations —
Dimensions and specification
WARNING — Users of this document should be familiar with normal laboratory practice. This
document does not purport to address all of the safety problems, if any, associated with its use. It
is the responsibility of the user to establish appropriate health and safety practices and to ensure
compliance with any national regulatory conditions.
1 Scope
This document specifies the requirements for flexible thermoplastic polyurethane and polyamide tubing
conveying compressed air, in sizes from 3 mm to 16 mm (1/8 inch to 1/2 inch) outside diameter.
Polyurethane tubings are dedicated for use in the temperature range from –20 °C to 60 °C, while polyamide
tubings are dedicated for use in the temperature range from −20 °C to 80 °C. Working pressure depends
on the tube size, the service temperature (see Table 13 and Table 14) and tubing material (see Table 15 and
Table 16).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 1307, Rubber and plastics hoses — Hose sizes, minimum and maximum inside diameters, and tolerances on
cut-to-length hoses
ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary
ISO 10619-1:2017, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness — Part 1:
Bending tests at ambient temperature
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 8330 apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
4 Materials and construction
The polyurethane tubing shall be manufactured from polyester or polyether based. For applications where
there is moisture or water present above 40 °C, polyurethane materials with good hydrolysis resistance are
required. The user shall specify this to the supplier of the tubing.
The polyamide tubing shall be manufactured from polyamide such as but not limited to PA12, PA6, etc.
Tubing shall be homogenous and free from surface imperfections. The tubing is extruded and can be
coloured to user requirements.
5 Dimensions and tolerances
5.1 Outside and inside diameters, wall thickness and tolerances
5.1.1 Polyurethane tubing
The outside diameter, inside diameter, wall thickness and tolerances of the tubing shall meet the
requirements given in Table 1 and Table 2.
Table 1 — Metric outside and inside diameters, wall thickness and tolerances
Outside diameter Inside diameter Wall thickness
Minimum Thickness
a a
Diameter Tolerance Diameter Tolerance
a
mm mm mm mm
mm
2 ±0,10 1,20 ±0,10 0,3
3 ±0,10 1,8 ±0,10 0,5
3 ±0,10 2 ±0,10 0,4
4 ±0,10 2,5 ±0,10 0,65
5 ±0,10 3 ±0,10 0,9
+ 0,10
6 ±0,10 4 0,9
- 0,20
+ 0,10
8 ±0,10 5,5 1,15
- 0,20
+ 0,10
8 ±0,10 5,7 1,05
- 0,20
+ 0,10
8 ±0,10 6 0,9
- 0,20
+ 0,10
10 ±0,15 7 1,4
- 0,20
+ 0,10
10 ±0,15 8 0,9
- 0,20
+ 0,10
12 ±0,15 8 1,9
- 0,20
+ 0,10
14 ±0,15 9,5 2,15
- 0,20
+ 0,10
14 ±0,15 9,8 2,0
- 0,20
+ 0,10
14 ±0,15 10,0 1,9
- 0,20
+ 0,10
16 ±0,15 11 2,4
- 0,20
a
Tolerance and limit specified for outside diameter, inside diameter and wall thickness cannot
all be met and coaxiality ensured at the same time.
...