A filter assembly includes a connecting cover and two filter tubes. The connecting cover includes a tubular wall, a partition plate, and two clamping rings. The tubular wall has an inner wall surface. The partition plate extends in a transverse direction, and has two abutment surfaces and a through hole. The inner wall surface and the abutment surfaces cooperatively define two insertion slots each of which opens unidirectionally. The clamping rings respectively protrude from the abutment surfaces. The two filter tubes are mounted respectively to the insertion slots. Each filter tube has two end surfaces, an outer annular surface, and an inner hole. For each filter tube, one of the end surfaces that is adjacent to the connecting cover abuts against a corresponding one of the abutment surfaces. The clamping rings are respectively inserted into the filter tubes.

A regenerative filter that includes a filter housing having inlet and outlet zones; a fluid path provided between the inlet and outlet zones; a plurality of filter elements each having an outer surface filter media applied thereto and functioning to filter particulate or contaminants from the fluid path. The filter elements are disposed in an monolithic array. An inlet port arrangement is disposed at the filter housing leading to the inlet zone and is constructed and arranged to direct the fluid path into the filter housing in a manner so as to maintain a controlled turbulence at the inlet zone. The inlet port arrangement comprises a pair of inlet ports that are arranged in juxtaposition at the inlet zone and each having one end where the fluid flow enters. Embodiments that are considered as falling under the scope of the present invention include 1. Single inlet/two or more outlets; 2. Two or more inlets/single outlet, or 3. Two or more inlets and two or more outlets.