MIL-DTL-24788A
FIGURE 2. Envelope and weight limitations and contact assembly location.
3.4.1 Control (or continuity) switch. The female half of the semi-dry-break, quick-disconnect coupling
assembly, Class 2, shall contain a sealed single pole, single throw control switch. The switch mechanism must be
shielded by a protective guard. The top of the switch mechanism shall not extend above the switch guard so as to
prevent abrasion of the switch mechanism, and to prevent inadvertent actuation. One side of the continuity switch
shall be electrically connected to the body of the female half of the semi-dry-break, quick-disconnect coupling
assembly and the other side of the switch shall be isolated from the body and shall make electrical contact with the
spider assembly protruding from the end of the mating aircraft refueling hose, as shown in Figure 2.
3.4.1.1 Protective boot. The switch mechanism must be sealed by a rubber boot or cover; or be designed to
resist deterioration in its performance when subjected to a severe marine environment without a rubber boot or
cover.
3.4.2 Commercial standard tools. Design of the semi-dry-break, quick-disconnect coupling assemblies shall
enable disassembly, reassembly, and service maintenance to be accomplished by means of commercially standard
tools as defined in MIL-S-8512.
3.5 Construction. Semi-dry-break, quick-disconnect coupling assemblies shall withstand the strains, jars,
vibrations, and other conditions incident to shipping, storage, and service usage. The assembly shall withstand a
drop of 6 feet onto a steel plate without any damage affecting operation as specified in 4.5.12.
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