MIL-DTL-24788A
4.5.12 Rough handling. The female half of the semi-dry-break, quick-disconnect coupling assembly shall be
attached to a length (12 feet minimum) of 2.5-inch collapsible hose (MIL-H-17902 or MIL-PRF-370). With the
female half of the semi-dry-break, quick-disconnect coupling assembly axis horizontal, the test assembly shall be
dropped a total of nine times from a height of 6 feet to a 0.625-inch thick steel plate, which is horizontal and
supported by a table or floor. For Class 2 couplings, the test assembly shall strike the plate three times with the
electrical control switch in each of the following positions:
a.
Top
b.
Side
c.
Bottom
The female half of the semi-dry-break, quick-disconnect coupling assembly shall then be connected to a male
half and subjected to the operating force and leakage tests of 4.5.2 and 4.5.3, respectively. Failure to meet the
requirements of 3.10.12 shall be cause for rejection.
4.5.13 Burst pressure. The complete semi-dry-break, quick-disconnect coupling assembly (60-mesh strainer,
male half and female half) shall be subjected to an internal test pressure of 180 PSI using the test fluids specified in
3.3.2. The pressure shall be held for 1 minute then reduced to 60 PSI and held for an additional 1 minute. Failure to
meet the requirements of 3.10.13 shall be cause for rejection.
4.5.14 Disassembly and inspection. Failure to meet the requirements of 3.10.14 shall be cause for rejection.
4.6 Inspection of packaging. Sample packs and the inspection of packaging (preservation, packing, and
marking) for shipment, stowage, and storage shall be in accordance with the requirements of section 5.
5. PACKAGING
5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or
order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these
personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging
requirements are maintained by the Inventory Control Point's packaging activities within the Military Service or
Defense Agency, or within the military service's system commands. Packaging data retrieval is available from the
managing Military Department's or Defense Agency's automated packaging files, CD-ROM products, or by
contacting the responsible packaging activity.
6. NOTES
(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)
6.1 Intended use. The semi-dry-break, quick-disconnect coupling assemblies covered by this specification are
intended for use in connecting fuel nozzles to aircraft refueling hoses or refueling pantographs in aircraft refueling
systems.
6.2 Acquisition requirements. Acquisition documents should specify the following:
a.
Title, number, and date of the specification.
b.
Part number of each component to be furnished (see 1.2).
c.
Whether qualification is required (see 3.1).
d.
Strainer mesh size (see 3.2.1).
e.
Packaging (see 5.1).
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