MIL-PRF-46736E
shall be inspected for dust tracking and structural damage. Signs for dust tracking shall be
observed on clean side of filter element. If filter element is installed in air cleaner housing for
differential pressure test then reference SAE J726 air cleaner test code industrial air cleaner test
procedures, airflow restriction and pressure drop test.
PRESSURE
COMPRESSED AIR
GAGE
ADAPTER
LIKE VALVE
10.16 cm (4 inch) STOP COCK
PIPE CAP OR
REDUCER
PRESSURE CHAMBER
(HEAVY WALL PIPE)
FIGURE 2. Backfire test setup.
PUMP
FLOW ORIFICE
PRESSURE DROP
FLOW METER
FILTER ELEMENT
PIEZOMETER
PRESSURE DROP
FILTER
ELEMENT
DUST
FEEDER
FIGURE 3. Differential pressure test setup.
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