MIL-PRF-25676E
4.5
Methods of Inspection.
4.5.1 Examination of product. Each adapter and cap shall be visually inspected for
defects of material, workmanship, finish, and for conformance to MS24476 and MS24480,
respectively and all requirements of this specification for which there are no specific tests.
4.5.2 Connect and disconnect test. Each sample adapter shall be connected and
disconnected from a nozzle a minimum of 10 times while dry. Each connection and
disconnection shall be accomplished with relative ease and rapidity and without use of tools.
There shall be no binding, sticking, or scoring of parts, (see 3.5.1).
4.5.3 Pressure test. Each sample adapter shall be connected to a nozzle and shall be
hydrostatically tested at the pressure specified in 4.5.4. The adapter shall withstand the applied
pressure for one minute without any visible signs of leakage.
4.5.4 Operation and leakage test. This test shall be conducted on the adapter while
connected to a test nozzle, as follows:
a. An adapter and nozzle shall be connected and disconnected 2,000 times consecutively
while dry. The assembly shall then be pressure checked at a hydrostatic pressure of 500 psi
with a Lubricating oil for one minute. There shall be no visible signs of leakage from the
adapter portion. The adapter and nozzle shall be disconnected and the following pressure tests
shall be conducted on the adapter.
b. Using a lubricating oil, a hydraulic pressure of 500 psi shall be applied to the outlet
end of the adapter for five minutes. There shall be no visible signs of leakage.
c. A hydraulic back pressure of a 2-foot head of hydraulic lubricating oil shall be applied
to the adapter for 30 minutes. There shall be no visible signs of leakage.
d. A hydraulic back pressure of 5 psi shall be applied to the adapter for 30 minutes.
There shall be no visible signs of leakage.
e. The adapter shall be drained and an air back pressure of 4.5 psi shall be applied to the
adapter for 30 minutes. There shall be no visible signs of leakage.
4.5.5 Low temperature and leakage test. An adapter and nozzle, while disconnected,
shall be filled with oil and cold soaked at a temperature of -65 F for 24 hours. The following
tests shall then be conducted at an ambient temperature of -65 F:
a. The adapter and nozzle shall be connected and disconnected. This shall be
accomplished with relative ease and rapidity. Any binding, locking, or scoring of parts shall be
cause for rejection.
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