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Crankcase ventilation filter assembly

Image Number 3 for United States Patent #8307815.

A filter assembly (100) comprises a housing (200) and a filter cartridge (300) that incorporates crankcase pressure-regulating components. The cartridge (300) includes an end cap (330), a plunger (340), and a spring (350). When the filter cartridge (300) is installed in the housing (200), the plunger (340) interacts with a podium (224), in response to crankcase pressure, to allow or block fluid communication with the inlet chamber (111).

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