A-A-52461
3. Strainer element. The strainer element material shall be wire
fabric, industrial per ASTM E437, table II, 100 mesh, wire diameter (dia) .0045 inch (in.) or 120 mesh, wire dia .0037 in. Material: Steel, stainless, type 304 or 316; brass, high zinc content, copper-zinc alloy; or commercial bronze-copper, commercially pure.
4. Gasket. The filter bowl gasket material shall be in accordance with CID A-A-52468-4.
b. Design and construction.
1. Envelope. The strainer shall be constructed to the form and dimensions as specified herein (see figure 1). The filter bowl shall be compatible with the bowl gasket. Design and construction that is not specified herein shall be in accordance with the best commercial practices.
2. Bowl gasket. The filter bowl gasket shall be in accordance with CID A-A-52468-4.
3. Servicing. Servicing, including cleaning and reassembly, shall be easily accomplished without disturbing the strainer’s connection to the engine and shall be designed to prevent improper assembly.
c. Performance.
1. Pressure-temperature resistance. The strainer shall show no signs of leakage or permanent deformation after being pressure tested at -65+ 3 degrees Fahrenheit (°F), 80 + 3*F, and 160 + 3°F. The pressure used in this test shall be 15 pounds per square inch (psi). Test fluids shall be used for the -650F and 80°F tests. Air shall be used for the 160°F test. For all tests the pressure shall be applied for 5 minutes and reduced to zero.
2. Flow rate. The nominal flow rate through the strainer shall be 10 gallons per hour (gph). The maximum differential pressure across the strainer shall not exceed 4 psi.
3. Vibration resistance. The strainer shall show no evidence of cracking, deformation, loosening or leakage in the body at gaskets or at the fittings after exposure to a sinusoidal vibration for 3 hours along each axis. A frequency range of 5 to 500 cycles per second shall be used. The sweep time for the frequency range of 5 Hertz (Hz) to 500 Hz and return to 5 Hz shall be 15 minutes.
4. Identification and markings. Identification and marking of strainers shall be permanent and legible and shall include as a minimum the manufacturer’s identification code (CAGE), and the part identification number (PIN) (see notes b and C).
QUALITY ASSURANCE PROVISIONS
a. Responsibility for inspection. The contractor is responsible for the performance of all inspections (examinations and tests).
b. Contractor certification. The contractor shall certify and maintain substantiating evidence that the product offered meets the salient characteristics of this commercial item description and the product conforms to the producer’s own drawings, specifications, workmanship standards, and quality assurance practices. Items with known defects shall not be submitted for
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