| 摘要 |
A three-position, circularly-shaped, height-adjustable overflow drain is disclosed. A circular back plate includes a bottom half opposite a top half, and is configured to be attachable to an overflow elbow. A first aperture is located in the bottom half of the back plate. A second aperture is located in the top half of the back plate. A rotatable handle comprises an outer cylindrical portion including a center plate. A third aperture is located in the center plate. The first, second and third apertures are aligned along a common radius, wherein the rotatable handle is rotatable to align either the first and third apertures, the second and third apertures, or no apertures. A cover plate is disposed within the rotatable handle and attached to the circular back plate forming an annular gap between the cover plate and the outer cylindrical portion. |
