Cartridge (oil filter)

Cartridge oil filters integrate an element and case and are installed on the discharge side of the oil pump.
A special type of filter paper is used for material of the element filter. Oil enters from the outside of the element and is released to the inside.
The filter also includes a built-in bypass valve that enables oil flow to continue without oil having to pass through the element in the event the element is fouled or clogged.
In the case of vertical water-cooled diesel engines, both an oil strainer and cartridge oil filter are used in combination.

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