Patent ID: 7329337

Claim:
A filter kit comprising: a filter base having a first annular surface, a second annular surface positioned radially inwardly of the first annular surface and spaced axially inwardly from the first annular surface toward an interior of said filter base, a first cylindrical inner surface adjoining the first and second annular surfaces, a third annular surface positioned radially inwardly of the second annular surface and spaced axially inwardly from the second annular surface toward the interior of said filter base, a second cylindrical inner surface adjoining the second and third annular surfaces, a fourth annular surface positioned radially inwardly of the third annular surface and spaced axially inwardly from the third annular surface toward the interior of the filter base, a third cylindrical inner surface adjoining the third and fourth annular surfaces, an internally threaded outlet port coaxially positioned on the fourth annular surface, and an inlet port in the fourth annular surface radially spaced between the third cylindrical inner surface and the internally threaded outlet port; a first filter having a face seal receivable by the first annular surface; a second filter having a radial seal receivable by the second radial surface; a first adapter having a first externally threaded and engageable with the internally threaded outlet port of the filter base and a second externally threaded end threadedly engageable with an internally threaded outlet port of the first filter; a second adapter having a first externally threaded end engageable with the internally threaded outlet port of the filter base and a second externally threaded end threadedly engageable with an internally threaded outlet port of the second filter.