MIL-PRF-46720C
3.5.3 Interchangeability. Valves shall be repairable, or functionally and physically
interchangeable with respect to like assemblies, sub-assemblies and replaceable parts of the same
type and design, regardless of manufacturer.
3.5.4 Identification. Prominently display the valve designator on the outer surface of the
valve, and shall include as a minimum the following:
a.
Nomenclature "Valve, Solenoid".
b.
Military part number.
c.
When required, serial numbers shall be defined (see 6.2).
d.
Manufacturer's CAGE code and name.
e.
Date of manufacture.
f.
Contract or order number.
g.
Symbol "US".
3.6 Operating environment requirements. The valve shall operate under the following
environmental conditions, without degradation in performance.
3.6.1 High temperature. The valve shall withstand exposure to a high temperature of
160 + 5°F (71 + 3°C), without damage, and shall conform to performance requirements of 3.3.2,
3.3.3, 3.3.5, and 3.3.8 during exposure. Subsequent performance shall conform to requirements
of 3.5.1.
3.6.2 Low temperature. The valve shall withstand exposure to a low temperature of
-65 (+5, -0°F) (-54, (+3, -0°C)), without damage, and shall conform to requirements of 3.3.2.
3.3.3, 3.3.5, and 3.3.8 during exposure. Subsequent performance shall conform to the
requirements of 3.5.1.
3.6.3 Fungus. The valve shall withstand exposure to fungus. Subsequent performance
shall conform to 3.3.2, 3.3.3, 3.3.5, and 3.3.8.
3.6.4 Salt spray. The valve shall withstand exposure to salt spray, with subsequent
performance conforming to 3.3.3, 3.3.5, and 3.3.8.
3.6.5 Sand and dust. The valve shall withstand exposure to sand and dust, without
damage. Subsequent performance shall conform to 3.3.2, 3.3.3, 3.3.5, and 3.5.1.
3.6.6 Shock. The valve shall withstand exposure to shock, without damage or loosening
of components. Subsequent conformance shall conform to 3.3.2, 3.3.3, 3.3.5, and 3.3.6.
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