This specification covers three types of lightweight, low pressure, wire, or fabric reinforced hose assemblies primarily for use in aircraft potable water systems.
This document defines the requirements for a PTFE lined, aramid reinforced assembly suitable for use up to 135 °C and up to 28 000 kPa aircraft and missile hydraulic and pneumatic systems.
This Aerospace Standard (AS) defines the requirements for a lightweight polytetrafluoroethylene (PTFE) lined, metallic reinforced, hose assembly suitable for use in high temperature, 204 °C, high pressure, 21,000 kPa (210 bar), aircraft hydraulic systems, also for use in pneumatic systems which allow some gaseous diffusion through the PTFE wall.
This SAE Aerospace Standard (MA) defines the requirements for a convoluted polytetrafluoroethylene (PTFE) lined, metallic reinforced, hose assembly suitable for use in aircraft fluid systems at temperatures of -55 to 204 °C and at operating pressures per Table 1.
The scope of this document is limited to the compatibility of typical fluids that may come in contact with PTFE hose assemblies. PTFE hose assemblies may be braided with CRES wire, polyester or para-aramid fibers. Hose assemblies may be equipped with aluminum, CRES, titanium or nickel alloy fittings; and with fire resistant cover materials. All of these constituent materials of PTFE hose assemblies must be compatible with all of the fluids found in any particular application.