A method of manufacturing a valve unit is disclosed that includes providing a plurality of injection molding dies that define a cavity corresponding in shape to the valve unit. A transcription of the spontaneous speech response is accessed. A grooved ring with any number of grooves that may be spiral in shape is used to create a high velocity circular motion on a divided stream for separation of suspended solid particles by centrifugal force in a cyclone filter and for saturation of liquid with gases in a fluid mixer where gases are introduced through a diffuser. Therefore, reduction in running cost and reduction in size of the cleaning toner container can be achieved. The bio-compatible coating is formed from a composition which includes an aqueous emulsion or dispersion of a polycarbonate-polyurethane composition and an excess of polyfunctional cross-linking agent. In a preferred embodiment, the spacing member is flexible to permit movement of the spacing member responsive to movement to weather induced movement of the jamb after the stop bead is mounted adjacent to the jamb.