Waterless No-Flush urinals resemble conventional fixtures and easily replace them. They install to the regular urinal 2" (50mm) waste line (for 1 1/2" (38mm) waste lines use a reducer bushing). They eliminate flush water supply lines. Flush valves are completely eliminated as well. No handles to touch no sensors to install or adjust no moving parts at all. Eliminates odors emanating from floor drains in restrooms warehouses public areas and confined spaces. Floordrains 1-1/2" to 2" add 3 oz. of Ever Prime. Floordrains 3" to 4" add 6 oz. of Ever Prime. Ever Prime pays for itself on its first application.