MIL-PRF-83870C
2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein,
the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and
regulations unless a specific exemption has been obtained.
3 REQUIREMENTS
3.1 Qualification. The filter elements furnished under this specification shall be products that are manufactured by a
manufacturer authorized by the qualifying activity for listing on the applicable qualified products list (QPL) before
contract award (see 4.2 and 6.3).
3.2 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable
materials should be used to the maximum extent possible provided that the material meets or exceeds the operational
and maintenance requirements, and promotes economically advantageous life cycle cost.
3.3 Materials. All materials shall be corrosion resistant or suitably treated to resist corrosion due to electrolytic
decomposition, high temperature lubricating oil, and any other condition that may be encountered during operational
use or storage. The use of toxic chemicals, hazardous substances, or ozone depleting chemicals shall be avoided,
whenever feasible.
3.3.1 Compatibility. All materials shall be compatible with MIL-PRF-7808 or MIL-PRF-23699 lubricating oil. No
copper shall be used.
3.4 Interface.
3.4.1 Dimensions. The filter element shall conform to the dimensions for the appropriate part number as designated
by figures 1 through 9.
3.4.2 Type. The filter element shall be of the full-flow type. The flow through the filter element shall be from the outside
of the filter to the inside.
3.5 Performance.
3.5.1 General. Filter element performance requirements are specified in table II.
3
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