| 摘要 |
The invention provides a filter apparatus wherein the filter element alone is replaceable and thus the case of the filter cartridge can be reused as is and not discarded. In a filter apparatus where fluid that flows in from an inlet in a head, passes through a filter element and flows out from an outlet in the head, the filter cartridge which is removably attached to the head comprises a case with a threaded ring on its outside peripheral surface that encloses a filter element and a retaining ring that retains it, and by using the threaded ring to removably fasten the retaining ring to the case, the filter element is fixed in position within the case, but by loosening the threaded ring from the retaining ring, the filter element can be removed from within the case and discarded.
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