MIL-DTL-62547D
substituted for the cleaning and pretreatment processes. The valve is excepted from this
requirement if it is made of corrosion resistant steel or anodized aluminum. The receiver bottle
shall be color coded and have exact agent identification in accordance with MIL-STD-101, or
equivalent and Drawing 12370460 (see 4.4.4.2.3).
3.6.2.4 Interchangeability. The extinguisher 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 the manufacturer (see 4.4.4.2.4).
3.7 Operating environment requirements. Each discharge valve and extinguisher shall
operate under the following environmental conditions without degradation, damage , or loss of
performance capabilities.
3.7.1 Discharge valve.
3.7.1.1 Fill temperature. The valve shall enable charging an extinguisher with the proper
weight of Halon 1301 and nitrogen superpressure at any temperature between -40 and 43 °C (-40
and 109 °F) with subsequent external leakage limited to that specified in 3.4.2.5 (see 4.4.5.1.1).
3.7.2 Extinguisher.
3.7.2.1 Temperature.
3.7.2.1.1 High temperature. The extinguisher shall meet the requirements of 3.7 when
soaked for a period of not less than 240 hours at temperatures up to 71 °C (160 °F)
(see 4.4.5.2.1.1).
3.7.2.1.2 Low temperature. The extinguisher shall meet the requirements of 3.7 when
soaked for a period not less than 240 hours at temperatures as low as -51 °C (-60 °F)
(see 4.4.5.2.1.2).
3.7.2.1.3 Temperature shock. The extinguisher shall meet the requirements of 3.7 when
exposed to rapid temperature changes between extremes of -51 and 71 °C (-60 and 160 °F)
(see 4.4.5.2.1.3).
3.7.2.2 Vibration. The extinguisher shall meet the requirements of 3.7 when exposed to
sinusoidal vibration applied along each of three really perpendicular axes in accordance with
figure 1 (see 4.4.5.2.2).
3.7.2.3 Shock. The extinguisher shall meet the requirements of 3.7 when subjected to
sawtooth shock pulses of 100±10 g, with a duration of 11±1.1 ms. The pulses shall be applied
three times in both directions of three mutually perpendicular axes (see 4.4.5.2.3 and figure 2).
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