MIL-STD-342(AT)
4. GENERAL REQUIREMENTS
4.1 Equipment.
4.1.1 Flow-checking medium. The flow-checking medium shall be oil conforming to
MIL-L-23699.
4.1.2 Flow bench. The flow bench shall be calibrated for and capable of flowing oil up to
5000 pounds per hour (pph) at a fluid temperature of 95 to 100 degrees Fahrenheit (oF). The
flow measurement shall be accurate to within plus or minus (±) 2 percent (%).
4.1.3 Pressure gage. The pressure gage shall be a suitable aircraft type, calibrated to 100
pounds per square inch gage (psig) and having an accuracy of + 1%.
4.1.4 Lines, fittings, and fixtures:
a. Lines and fittings. Suitable aircraft-type lines and fittings shall be used.
b. Fixtures. When required, suitable fixturing shall be used for parts, subassemblies,
and assemblies being flow checked.
NOTE: No restriction smaller than the inside diameter of the inlet port shall be allowed.
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