![img](MIL-PRF-8386100006im.jpg)
MIL-PRF-83861D
4. VERIFICATION
4.1 Classification of inspections. The inspection requirements specified herein are
classified as follows (see 6.2):
a. Qualification inspection (see 4.2)
b. Conformance inspection (see 4.3)
TABLE II. Qualification tests
Filter element no. 1
Filter element no. 2
Filter element no. 3
Filter element no. 4
Test
(lowest initial bubble
(highest initial bubble
(2nd lowest initial
point)
point)
bubble point)
Examination of
Examination of
Examination of
Examination of
4.6.1
product
product
product
product
Initial bubble point
Initial bubble point
Initial bubble point
Initial bubble point
4.6.2.1
Immersion
Immersion
Immersion
Immersion
4.4.3
Conformance bubble
Conformance bubble
Conformance bubble
Conformance bubble
4.6.2.2
point
point
point
point
Cold start
Cold start
Cold start
Cold start
4.6.3
Conformance bubble
Conformance bubble
Conformance bubble
Conformance bubble
4.6.2.2
point
point
point
point
Max particle passed
N/A
N/A
N/A
4.6.5
Conformance bubble
N/A
N/A
N/A
4.6.2.2
point
Flow fatigue
N/A
N/A
N/A
4.6.7
Conformance bubble
N/A
N/A
N/A
4.6.2.2
point
N/A
Pressure buildup and
N/A
N/A
4.6.6
collapse
N/A
Conformance bubble
N/A
N/A
4.6.2.2
point
N/A
N/A
Efficiency
N/A
4.6.4
N/A
N/A
Conformance bubble
N/A
4.6.2.2
point
N/A
N/A
N/A
Media and abrasion
4.6.8
migration
N/A
N/A
N/A
Conformance bubble
4.6.2.2
point
4.2 Qualification inspection. If required (see 3.1 and 6.3), qualification inspection shall
be performed on five filter elements of each part number. Four of the filter elements shall be
subjected to the tests indicated in table II. The remaining filter element shall be subjected to the
fungus test in 4.6.9.
6
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