MIL-DTL-62011E
3.5.5 Dielectric strength. The pump insulation shall show no loosening, cracking, charring, burning,
smoking, rupture, or other damage with the internal ground and radio suppressor ground strap(s)
disconnected, when tested as specified in 4.6.7.
3.5.6 Vapor separation. When tested as specified in 4.6.8, the pump shall equal or exceed the
pressures and flow rates on figure 1 with fuel at 155 °F (68.3° C). When the pump inlet is removed from
the heated fuel and then re-submerged, the pump shall re-establish that performance within a period of 5
seconds.
3.5.7 Flow through. When tested as specified in 4.6.9, the minimum flow at the pump outlet shall be
not less than 60 gph (3.8 lph) when the pump is electrically disconnected and the pump is subjected to
either a 1 psig (7kpa) pressure at the pump inlet or, where a pump by-pass system is used, a vacuum of
approximately 2 inches (51 mm) of mercury at the pump outlet.
3.5.8 On-off cycling. When tested as specified in 4.6.10, the pump shall equal or exceed the
pressures and flow rates on figure 1 within 3 seconds after power is turned off and then reapplied.
3.5.9 Endurance. When tested as specified in 4.6.11, the pump shall equal or exceed the pressures
and flow rates on figure 1 after not less than 1,500 hours of continuous operation. The pump shall
require no maintenance during this time period.
3.5.10 Coupling capability (static). The pump delivery shall reach a minimum of 200 gph (757 lph)
at 4 psig within 60 seconds of starting, when tested as specified in 4.6.12.
3.5.11 Coupling capability (dynamic). An operating pump shall start pumping within 5 seconds after
immersion, and the impeller shall not decouple when tested as specified in 4.6.13.
3.5.12 Electrical continuity The electrical resistance between the pump housing and the wire braid on
the power cable, and between the 0.4375-28 UNEF-2A thread and the wire braid, shall be less than 1
ohm, when tested as specified in 4.6.14. See the appropriate specification sheet for the locations of
these items.
3.6 Environmental requirements.
pump shall equal or exceed the pressures and flow rates on figure 1 at any temperature between -65 and
130 °F (-54°C and 54°C).
3.6.2 Explosion-proofness. When tested as specified in 4.6.16, the pump shall not cause ignition of
an explosive fuel mixture.
3.6.3 Shock resistance. When tested as specified in 4.6.17, the pump shall withstand, without
damage or impairment of performance, a shock of 25 gravity units (g) applied in the direction of each of
the three major axes.
3.6.4 Vibration resistance. When tested as specified in 4.6.18, the pump shall not malfunction and
shall equal or exceed the pressures and flow rates on figure 1 when exposed to vibrations between 10
and 55 Hz with an amplitude of 0.03 inches.
3.6.5 Fungus resistance. When tested as specified in 4.6.19, the pump shall be fungus resistant.
3.6.6 Fuel resistance. Pump elastomeric parts (if used) that contact fuel shall be fuel resistant, then
tested as specified in 4.6.20.
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