MIL-PRF-38201D
4.8.4 Shock. The valve assembly with cap shall be tested in accordance with MIL-STD-810,
Method 516, procedure I. At the conclusion of these tests, the tests in paragraphs 4.7.1, 4.7.2,
4.7.3, 4.7.4, 4.7.5 and 4.7.6 shall be performed.
4.9 Reliability. The valve shall be subjected to cycles of connection and disconnection to a
mating valve conforming to MIL-PRF-25961, using the test setup similar to the one shown in
figure 3. A cycle shall consist of complete connection (poppet unseated) including: venting of
the CRU-50/A valve from 300 psig, flow of test liquid through the mated valves, and
disconnection (valves separated). The assembly shall be subjected to the tests specified in
paragraphs 4.7.1, 4.7.3, 4.7.5, and 4.7.6 every 700 cycles during the reliability test, to determine
if a failure has occurred. A valve assembly failing any of these tests shall have failed the
reliability test. In addition, any failure of the valve to mate properly or any fracture of
components shall constitute a test failure. No parts shall be replaced during the reliability testing
as preventive maintenance. Acceptance shall be based on the accept-reject criteria of test plan I
of MIL-HDBK-781, as well as recording, data handling, and reporting procedures.
4.10
Pressure Actuation. A CRU-50/A valve shall have the buildup and gas ports connected
to a 450 psig gaseous pressure source. The vent and fill outlet ports shall be open. Upon
connection with the CRU-59/E valve, the CRU-50/A shall vent the 450 psig pressure.
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