Patent ID: 7503083

Claim:
In combination with a fluid compartment having a bottom with a waste water strainer mounted in said bottom, said strainer having a cylindrical wall with a bottom edge surrounding a cylindrical opening extending through the bottom of said compartment, and a flange extending outwardly from a level above and adjacent said cylindrical opening and positioned on the bottom of said compartment: a waste water insert comprising a wall with a cylindrical first portion and a cylindrical second portion with a conical portion therebetween, said cylindrical first portion having a diameter greater than a diameter of said cylindrical second portion, said wall surrounding a cylindrical bore and having an upper end, and a flange on said upper end extending outwardly from said cylindrical bore; the wall of said insert being spaced from cylindrical wall of said strainer wherein said cylindrical first portion being closer to said cylindrical wall of said strainer than said cylindrical second portion; and the cylindrical second portion of said insert receiving a resilient ring that engages said cylindrical wall of said strainer.