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|  MIL-S-8710B
(b) Materials of construction:
(1)
Materials
(2)
Treatments
(j)
Finishes
(4)
Special fabrication techniques and processes
Physical characteristics:
(c)
(1) Weight
(2) Strength
(3) Flow schematic diagram
Performance characteristics:
(d)
(1) Rated pressure (no less than 60 psi)
(2) Rated flow
(3) Pressure drop at rated flow, impending bypass, and bypass
(4) largest glass bead which will pass through
the strainer element
(5) Area of strainer screen and configuration
(6) Maximum air pressure bubble test
(7) Sump capcity
3. 4.2.1 Strainer bypass, - All fuel system strainers shall be equipped
with bypass provisions to prevent engine fuel starvation by icing or plugging
of the strainer element with contaminant. The bypass snail be designed to
minimize washing of ice or contaminant from the element or sump into the fuel
system. An indicator shall be provided to show when the impending bypass condition is
reached.
The indicator shall be nonresettable until the strainer element
is removed.
3.4.2.2 Icing. - The fuel strainer bypass shall pass the full rated
flow and at the specified pressure drop, with the element completely blocked
with ice. Full operation of the strainer bypass shall not be jeopardized when
operating with 0.75 CC. of free water per gallon Of fuel in excess of
saturator at 60 F with fuel containing no anti-icing additive, when cooled
to any temperature down to and including -65 F.
3.4.2.3 Electrical. - If the fuel strainer's bypass inchoation requires
electrical connections, the connectors shall conform to MIL-C-38300 and wiring
shall be installed in accordance with MIL-W-5068. All electrical equipment
shall me-et the interference requirements of MIL-STD-826.
3.4.3 Construction. - The fuel system strainer shall be constructed to
withstand the strains, jars, vibrations, and other conditions incident to
shipping, storage, installation, and service use. In additon, the mounting
and housing shall possess ample strength and rigidity to withstand the wrench
loads required for making tube connections and replacing strainer elements.
5
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