MIL-DTL-46725D(AT)
d.
Manufacturer's Serial Number
e.
Manufacturer's name, identification code (CAGE) or trademark
f.
Contract or order number
g.
Date of manufacture
h.
US
3.5.3 Safety. The valve shall be free of foreign materials, and shall pose no hazards
physically to operators.
3.6 Operating environmental requirements. The valve shall operate under the following
environmental conditions, without degradation in performance.
3.6.1 High temperature. The valve shall perform in accordance with requirements of
3.3.1 and 3.3.8 while operating at 71 + 3 degrees Celsius (°C) [160 + 5 degrees Fahrenheit (°F)].
3.6.2 Low temperature. The valve shall perform in accordance with requirements of
3.3.1 and 3.3.8 while operating at -54 + 3°C (-65 + 5°F).
3.6.3 Fungus. The valve shall operate in environments conducive to spore germination
and growth (air temperature between 30° + 1°C (86° + 2°F) and relative humidity of 95 + 5%).
3.6.4 Corrosion. The valve and the removed valve spool shall be capable of withstanding
a 1 % salt spray solution.
3.6.5 Dust. The valve shall be capable of withstanding a blowing dust environment with
an air velocity of 1.5 to 8.9 meter per second (m/s) (300 to 1750 feet per minute (ft/min)).
3.6.6 Shock. The valve shall operate after a half sine shock pulse of 15 gravity units (g).
3.6.7 Vibration. The valve components shall not loosen nor become damaged after being
subjected to a simple harmonic motion having an amplitude of 0.8 millimeter (mm).
4. VERIFICATION
4.1 Classification of inspection. The inspection conditions specified herein are classified
as follows:
a. First article inspection (see 4.1.1).
b. Conformance inspection (CI) (see 4.1.2).
4.1.1 First article inspection. When specified, first article inspection shall be performed
on 4 preproduction or initial production valves (see 6.2 and 6.4). This inspection shall include all
verifications listed in table II.
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