This SAE Aerospace Standard (AS) covers medium-pressure, high-temperature, flexible, metal-hose assemblies suitable for operation in pneumatic systems up to 800 °F with excursion to 1200 °F for Class “B” and “N” and primarily for use on jet aircraft power plants. Refer to 1.2.1 for recommended usage.1.1 Types
NOTE: Unless otherwise specified on a design activity controlled drawing, or contract, Type 1, Type 2, Type 3, or Type 4 inner tube construction may be supplied.1.2 Classes
NOTE: Refer to Table 1 for specific fitting material definition. 1.2.1 Recommended Usage
a. Class “A” and “S” hose assemblies are recommended for continuous service use in static applications up to 800 °F maximum.
b. Class “B” and “N” hose assemblies are recommended for continuous service use in both static and dynamic flexure applications at continuous temperature up to 800 °F with excursions to 1200 °F within the pressure limits as defined in Figure 2.