BS ISO 7313:2020

This standard BS ISO 7313:2020 Aircraft. High temperature convoluted hose assemblies in polytetrafluoroethylene (PTFE) is classified in these ICS categories:

• 49.080 Aerospace fluid systems and components
• 83.140.40 Hoses

This document specifies characteristics of hose assemblies with corrosion?resistant metallic braid and convoluted polytetrafluoroethylene (PTFE) inner tube for use in aircraft fluid systems at temperatures between ?55 °C and +200 °C and at nominal pressures, depending on bore size, up to 6,8 MPa. Special approval from the proper national authority can be required if these hoses are to be part of a pressurized gas storage system.

Two types of hose assembly are covered in this document:

• Type 1: Non?conductive inner tube; and

• Type 2: Conductive inner tube.