| 摘要 |
An oil filter includes a housing defining a cavity. The housing includes an aperture for providing fluid to the cavity. A filter assembly having a filter media is arranged in the cavity and separates the cavity into an inlet side and an outlet side. A relief valve assembly has a relief valve movable to selectively fluidly connect the inlet and outlet sides to bypass the filter media. An anti-drain back valve includes a closed position sealing the aperture in the housing from the cavity while permitting a fluid connection between the aperture in the housing and the relief valve. The relief valve assembly includes a relief valve retainer supporting the relief valve. The anti-drain back valve includes a wall spaced from the relief valve retainer forming a chamber. Apertures in the wall and holes in the relief valve fluidly connect the aperture of the housing to the relief valve throughout various positions of the anti-drain back valve.
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