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 . <EOS>