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|  MIL-V-85033A(AS]
3.4.5 Pressure drop. The pressure drop across the charging valve shall not
exceed 10 psig with a maintained inlet pressure of 3000 1OO psig while flow-
ing at 28.3 liters per minute (one cubic foot per minute).
3.4.6 Environmental. The charging valve shall meet the following environ-
mental requirements of MIL-STD-81O, unless otherwise specified herein.
3.4.6.1 High temperature. The charging valve shall operate satisfactorily
after the test of MIL-STD-81O, Method 501, Procedure I, except the temperature
shall be 121C (250F).
3.4.6.2 Low temperature. The charging valve shall operate satisfactorily
after the test of MIL-STD-81O, Method 502, Procedure I for a period of four
hours.
3.4.6.3 Thermal shock. The charging valve shall operate satisfactorily
after the test of MIL-STD-810, Method 503, Procedure I.
3.4.6.4 Dust. The charging valve shall operate satisfactorily after the
test of MIL-STD-81O, Method-5IO, Procedure I.
3.4.6.5 Salt fog. The charging valve shall operate satisfactorily after
the test of M1L-STD-81O, Method 509, Procedure I, except the duration shall be
50 hours.
3.4.6.6 Humidity. The charging valve shall operate satisfactorily after
the test of MIL-STD-81O, Method 507, Procedure I, except four 24 hour cycles
shall be substituted for the ten 24 hour cycles.
3.4.6.7 Vibration. The charging valve shall operate satisfactorily after
exposure to the sinusoidal and random vibration tests while pressurized to
3000 100 psig.
3.4.7 Service life. The charging valve shall operate satisfactorily after
being subjected to a life test of 500 operating cycles and pressurized to 3000
1OO psig as specified herein and there shall be no damage when visually
inspected at the completion of each of the 50 cycles.
3.4.8 Burst pressure. The charging valve shall operate satisfactorily
after being subjected to a burst pressure test wherein the outlet port shall
be hydrostatically pressurized to 6700 100 psig for three (3) minutes with no
evidence of permanent deformation.
3.5 Precedence. The selection of specifications and standards for use in
the design and development shall be in accordance with the requirements of
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