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|  MIL-S-8710B
4.6.7 Pressure drop. - The pressure drop through the strainer shall be
termined over the range up to rated flow, in accordance with ARP 868. The
pressure drop shall not exceed that specified in the model specification.
The initial test shall be performed with a clean strainer element. Subsequent
tests shall be made with constantly increasing blockage of the element to
determine the impending bypass and full bypass pressure drop at various flow
rates up to rated flow. Sufficient data shall be taken to satisfactorily
plot a "pressure drop vs. flow" curve for inclusion in the test report. For
sampling tests pressure drop shall be determined with the clean elements
impending bypass and full bypass at rated flow only.
4.6.8 Fuel resistance and low temperature. - The fuel resistance and
low temperature tests shall be performed in accordance with the model specific-
ation and table II of MIL-F-8615.
4.6.9 Corrosion resistance. - The corrosion resistance testing shall be
in accordance with the model specification and performed as specified in the
paragraph titled "Corrosion resistance " of MIL-F-8615.
4.6.10 Vibration. - The vibration test shall be performed in accordance
with the applicable vibration tests of MIL-STD-810.
4.6.11 Burst pressure. - With the outlet port blocked, the inlet pert
of the strainer shall be subjected to a fluid pressure of 300 percent of the
rated pressure for a period of 1 minute. There shall be no evidence of
failure, malfunction, permanent distortion, or external leakage.
4.6.12 Icing. - The test setup and the procedure of this test shall be
as specified in the model specification.
4.6.13 Electrical. - The electrical testing, such as dielectric
strength and radio interference, shall be as specified in the model specification.
4.6.14 Disassembly and inspection. - The unit shall be disassembled and
inspected. There shall be no evidence of deterioration or undue wear.
PREPARATION FOR DELIVERY
5.
5.1 Preservation and packaging. - Fuel system strainers shall be preserved
and packaged in accordance with the applicable method of MIL-STD-794.
5.2 Packing. -
5.2.1 Levels A, B, and C. - the fuel systems components shall be packed
in accordance with MIL-STD-794. unless otherwise specified (see 6.2), level A
containers shall conform to PPP-B-601, overseas type, constructed of NN-P-530
plywood conforming to standard grade, with exterior glue of U.S. Product
Standard PS1-66. The plywood shall have the grade stamp of an approved testing
agency and shall be surface treated in accordance with TT-W-572. Unless other-
wise specified (see 6.2), level B containers conforming to PPP-B-636 or PPP-B-640
shall be weather-resistant class.
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