A-A-52429A(AT)
10 to 55 Hz and back to 10 Hz, shall be traversed in approximately one minute. This motion
shall be applied for 2 hours in each of three mutually perpendicular axes.
2.8.2 High frequency. The valve shall be subjected to a simple harmonic motion having an
amplitude varied to maintain a constant peak acceleration of 10g s (peak), the frequency being
varied logarithmically between the approximate limits of 55 and 2000 Hz. The entire frequency
range of 55 to 2000 Hz (no return sweep) shall be traversed in 35 +/- 5 minutes, except that in the
vicinity of what appears to be resonance and in order to facilitate the establishment of a resonant
frequency, the above rate may be decreased. Valves shall be vibrated for 5 minutes at each of
two resonant frequencies observed. This procedure shall be performed in each of three mutually
perpendicular axes. Interruptions are permitted provided the requirements for rate of change and
test duration are met.
2.9 Salt-fog (non-operating). A valve conditioned for 2 hours at 95F, exposed for 48 hours to
salt-fog at fallout rate between 0.5 and 3 millimeters per 80 square centimeters (cm2) per hour,
then stored in a standard atmosphere for 48 hours for drying, shall operate without evidencing
any malfunction or failure.
2.10 Fungus. The solenoid valve shall be constructed of only materials that are fungus non-
nutrient, where possible. Fungus growth shall not degrade performance.
2.11 Cleanliness. The valve shall be precision cleaned (see 5.3). Upon completion of testing a
sufficient quantity of fluid shall be retained in the valve to assure proper preservation during
extended storage and shipment. Ports shall be covered with suitable plugs.
2.12 Identification and marking. Identification and marking shall be permanent and legible and,
unless otherwise specified in Drawing 12265543, shall include the manufacturer s identification
code (CAGE), the contract number, the engineering drawing part number, and the national stock
number (NSN) (see 5.2).
2.12.1 Cure date. The cure date shall be physically and legibly marked on the exterior of the
valve assembly.
2.13 Workmanship. Workmanship shall be in accordance with the manufacture of a high quality
solenoid valves. This shall be evidenced by the absence of defects detrimental to its life,
serviceability, or appearance.
3. QUALITY ASSURANCE PROVISIONS.
3.1 Responsibility for inspection. The contractor is responsible for the performance of all
inspections (examinations and tests).
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