F-F-351F
Elements shall not contain built-in relief valves, orifices or bleeding devices. Filter elements shall
have a perforated outer jacket and meet the applicable performance requirements of 3.5.
3.4.3.2 Pullout device. A pullout device is not required on type IV, class 1, 2, 3 or 4
elements. If a pullout device is required in a Type IV, class 4 element (see 6.2), it shall be a
device accessible at the top and shall not interfere with the proper mating and sealing of the
gasket surface when the elements are stacked vertically. The pullout device shall meet the direct
pull requirements of 3.5.10.2.
3.5 Performance requirements.
3.5.1 Pressure resistance. Type I, class 1, style B filter assembly shall withstand a
pressure of not less than 100 pounds per square inch (psi) (689 kilopascals (kPa)). Type I,
class 3 filter housing shall withstand a pressure of 150 psi (1034 kPa) without leakage, permanent
deformation, or other visible damage (see 4.6.1).
3.5.2 Media migration (see 4.6.2).
3.5.2.1 Type I and II filter elements. Media migration shall be not greater than
10 milligrams (mg).
3.5.2.2 Type IV elements. Media migration shall be not greater than shown in table I.
TABLE I. Media migration, type IV elements.
Allowable media
Class
migration in milligrams
1
3
2
5
3
10
4
15
3.5.2.2.1 Filtering media design for Type IV, class 4 filter element. The filtering media
shall be that of the current standard product. Pleated filtering media design shall be that of the
controlled radius design to allow maximum surface area and dirt holding capacity.
3.5.3 Antidrain-back device. Device shall prevent oil leakage back through inlet ports or
holes when in an inverted or partially inverted position. The leakage test of the antidrain-back
valve shall be based on the total capacity for each filter unit (see 4.6.3).
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