An adapter for use in a filter device comprising a filter with a filter outlet, said adapter comprising: a hollow body having: (i) a top portion having a top portion tapered inner diameter, wherein the top portion tapered inner diameter has a maximum diameter and a minimum diameter; (ii) a bottom portion; and (iii) a central fluid flow port passing through the hollow body, the central fluid flow port having a first end and a second end, an inside wall and an outside wall, the central fluid flow port being in fluid communication with the filter outlet; the top portion including a downwardly slanted inner wall providing the top portion tapered inner diameter, the downwardly slanted inner wall being connected to the first end of the central fluid flow port at the minimum diameter of the top portion tapered inner diameter, the downwardly slanted inner wall having an upper surface and two or more hollow passageways passing through the upper surface of the downwardly slanted inner wall, each of the two or more hollow passageways including an upper passageway end and a lower passageway end, the upper surface of the downwardly slanted inner wall including the upper passageway ends; characterized in that the bottom portion including a downwardly extending hollow tubular element including the second end of the central fluid flow port, the hollow tubular element providing the inside wall and outside wall of the central fluid flow port; the bottom portion including an annular channel surrounding the downwardly extending hollow tubular element, the annular channel comprising a base, an outer side wall, and an inner side wall comprising the outside wall of the central fluid flow port, the base of the annular channel including the lower passageway ends of the two or more hollow passageways. (i) a top portion having a top portion tapered inner diameter, wherein the top portion tapered inner diameter has a maximum diameter and a minimum diameter; (ii) a bottom portion; and (iii) a central fluid flow port passing through the hollow body, the central fluid flow port having a first end and a second end, an inside wall and an outside wall, the central fluid flow port being in fluid communication with the filter outlet; the top portion including a downwardly slanted inner wall providing the top portion tapered inner diameter, the downwardly slanted inner wall being connected to the first end of the central fluid flow port at the minimum diameter of the top portion tapered inner diameter, the downwardly slanted inner wall having an upper surface and two or more hollow passageways passing through the upper surface of the downwardly slanted inner wall, each of the two or more hollow passageways including an upper passageway end and a lower passageway end, the upper surface of the downwardly slanted inner wall including the upper passageway ends; characterized in that the bottom portion including a downwardly extending hollow tubular element including the second end of the central fluid flow port, the hollow tubular element providing the inside wall and outside wall of the central fluid flow port; the bottom portion including an annular channel surrounding the downwardly extending hollow tubular element, the annular channel comprising a base, an outer side wall, and an inner side wall comprising the outside wall of the central fluid flow port, the base of the annular channel including the lower passageway ends of the two or more hollow passageways.