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  • BSI
    20/30372021 DC BS ISO 9938. Aerospace. Polytetrafluoroethylene (PTFE) hose assemblies, classification 204 °C/28 000 kPa. Procurement specification
    Edition: 2020
    $44.66
    / user per year

Description of 20/30372021 DC 2020

This International Standard specifies requirements for polytetrafluoroethylene (PTFE) hose assemblies for use in aircraft hydraulic systems at temperatures between –55 °C and +204 °C and at a nominal pressure up to 28 000 kPa (280 bar). The hose assemblies are also suitable for use within the same temperature and pressure limitations in aircraft pneumatic systems where some gaseous diffusion through the wall of the PTFE liner may be tolerated.

The use of these hose assemblies in high‑pressure pneumatic storage systems is not recommended. ln addition, installations in which the limits specified in this International Standard are exceeded, or in which the application is not covered specifically by this International Standard, for example for oxygen, shall be subject to the approval of the purchaser.



Standard Number20/30372021 DC
TitleBS ISO 9938. Aerospace. Polytetrafluoroethylene (PTFE) hose assemblies, classification 204 °C/28 000 kPa. Procurement specification
StatusDefinitive
Publication Date2020-09-16
Identical National Standard OfISO/DIS 9938
DescriptorsFlexible pipes, High temperatures, Test equipment, Pressure testing, Resistance measurement, Polytetrafluoroethylene, Quality assurance systems, Design, Dimensions, Lubricating oils, Performance testing, Chemical-resistance tests, Pipes, Corrosion-resistant steels, Qualification approval, Aviation fuels, Thermoplastic polymers, Reinforcing steels, Aircraft components, Reinforced materials, Salt-spray tests, Performance, Vacuum techniques, Leak tests
ICS49.080 Aerospace fluid systems and components, 83.140.40 Hoses
CommitteeACE/69
PublisherBSI
Pages25

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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