SAE AS 25427:2015 pdf free.Coupling Assembly, Hydraulic, Self-Sealing, Quick Disconnect.
3.4.5 Operation: The coupling shall be so designed that it can be coupled and uncoupled with one hand without the use of tools. Coupling and uncoupling operations shall be possible with 60-PSI static pressure applied to both halves of the coupling. Inadvertent uncoupling shall not occur under 20G maximum loading. It shall be possible to determine by visual inspection that the coupling is completely coupled and locked. In addition, couplings shall provide a touch indication for determining whether the coupling is locked or unlocked. Couplings shall not have any partially coupled unlocked positions in which the coupling can remain stable and permit fluid flow. Couplings shall be coupled with a single simple motion. (See 4.6.9.)
3.4.6 Flange: A removable bulkhead flange for fastening the coupling to a bulkhead shall be provided, as required by the MS standard, for use on the bulkhead mounting end of the coupling. The flange shall be in accordance with Standard MS24335. This flange shall withstand 1.5 times the maximum steel tubing wrench torque as specified by Standard ANDI 0064 for a given tube size coupling when tested as specified in 4.6.13.
3.5 Interchangeability:
Couplings shall be interchangeable as an assembly. It shall be impossible to interconnect
different tube sizes.
3.8 Identification of product:
The coupling shall be marked for identification in accordance with Standard MIL-STD-130. In addition, each coupling shall be permanently marked with the MS and manufacturer’s part numbers and the manufacturer’s name or trademark as required on Standard MS24333 or M524334. Each manufacturer shall identify all couplings by an identification letter. This letter will follow the MS number, but precede the size dash number; i.e., MS24333-x-size. The identification letter will be assigned when a manufacturer’s first coupling is approved and will be used on all couplings manufactured by the same source.
3.9 Workmanship:
Workmanship shall be of the quality necessary to produce couplings free from all defects which would affect proper functioning in service.
4. QUALITY ASSURANCE PROVISIONS:
4.1 Inspection responsibility:
The supplier is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified, the supplier may utilize his own or any other inspection facilities and services acceptable to the Government. Inspection records of the examination and tests shall be kept complete and available to the Government as specified in the contract or order. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements.SAE AS 25427 pdf download.