Fitting, Plug-in Union, Ring Locked, 24 Degree Cone, Fluid Connection, 5080 psi (35000 kPa), Specification for
|Publication Date:||1 January 2020|
This SAE Aerospace Standard (AS) establishes the requirements for 24 degree cone AS5827 or EN 6123 flareless ring locked fitting assemblies per AS5550 and AS5865, for use in aircraft fluid systems at nominal operating pressure of 5080 psi (35000 kPa) maximum and operating temperature range of -65 to +275 °F (-54 to +135 °C).
The general requirements shall be for, but not limited to, commercial aircraft hydraulic components per AS4941, using port configuration as specified in AS5551.
Type 1 Standard requirement for Proof, Tensile, Fire, and Vibration Test
Type 2 Alternate requirement for Proof, Tensile, Fire, and Vibration Test
NOTE: Type 1 meets requirements of both types.
Fitting assemblies covered by this standard are intended for use in aircraft hydraulic and other fluid systems at the maximum pressures specified. This standard is intended to be suitable for... View More
Fitting assemblies covered by this standard are intended for use in aircraft hydraulic and other fluid systems at the maximum pressures specified. This standard is intended to be suitable for designation as a procurement specification at 5080 psi maximum operating pressure for ring-locked fitting assemblies incorporating 24 degree machined internal conical sealing surfaces mating to fitting ends.
NOTE: Design of equipment using AS5551 ports shall be in accordance with AS4941. When evaluating equipment design, further stress analysis and/or verification testing may be required to ensure performance of the fitting assembly, and/or equipment, when external dimensioning of AS5551 ports are at the "least material conditions" (LMC). Listed below are actual sizes of AS5551 ports that have successfully completed qualification testing, as specified herein. The external port diameters listed below are larger than B-diameters specified in AS5551. The test data are provided as a baseline for further analysis:
NOTE: The total volume of this AS5551 port equipment was approximately 4X greater than the failed port equipment's, even though the LMC was maintained, per the table above.View Less