MIL-DTL-62011E
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are classified as
follows:
b. Conformance inspection (see 4.5).
4.2 Inspection conditions. Unless otherwise specified, all inspections shall be performed in
4.2.1 Test equipment and inspection facilities. Test and measuring equipment and inspection
facilities of sufficient accuracy, quality and quantity to permit performance of the required inspection shall
be used.
4.2.2 Atmospheric conditions. Unless otherwise specified (see 6.2), all inspections shall be
conducted under the following atmospheric conditions:
a. Air temperature: 77±20 °F (25±6°C).
b. Barometric pressure: 28.5+2, -3 inches of mercury (725+50, -75 millimeters of mercury).
c. Relative humidity: 50±30 percent.
4.2.3 Operating voltage. The operating voltage of the pump shall be 27.5±0.1 V dc.
4.2.4 Test fuel. Fuel used for testing shall conform to grade 2-D of A-A-52557.
4.2.5 Test apparatus. The inspection apparatus shall include a fuel tank or tanks suitably equipped
to mount the pump within the test fluid with the fuel inlet at least 2 inches below fluid level. Means shall
be provided within the apparatus to re-circulate test fuel and to control test fuel temperature at any point
between -65 and 160 °F (-53 and 71°C). The apparatus shall include an electrical source, ranging from 0
to 32 V dc, to operate the pump. The electrical source shall maintain any voltage setting and shall not
drop more than 0.5 volts in 1 millisecond (measured with an oscilloscope) when the pump is energized.
Monitoring devices shall also be included to determine gph flow rate, psig of pressure generated by the
pump, and electrical loads. The pressure gauge tap shall be located in a 0.5 inch (12.7mm) (nominal)
inside diameter discharge line, 6 to 8 inches (152 to 203 mm) from the discharge fitting on the pump. The
pressure gauge reading shall be 0 psig with pump stopped and fuel lines full.
4.2.6 Tolerances. Unless otherwise specified, all tolerances of the test apparatus shall
be ±10 percent.
4.2.7 Mounting position. All tests shall be conducted with the pump in its normal mounting position in
which the longitudinal axis of the pump is vertical.
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