| 摘要 |
<p>A pair of hard material plates (20, 30), intended to form the control members for a mixing valve of the so-called sequential type, wherein the plates are intended to perform, during the control stroke, only a relative rotation around a rotation center, and wherein the fixed plate (20) has two passage openings and the movable plate (30) has at least one passage opening, characterized in that the whole of a first portion of the fixed plate (20) which is located on one side of a first straight line passing through the rotation center is lacking in openings, that both openings (21, 22) of the fixed plate (20) occupy in their whole just less of a second portion of the fixed plate (20), lying with respect to the first straight line opposite the first portion of the fixed plate (20), that both openings (21, 22) of the fixed plate (20) are mutually separated by a rib (25) having, at least in part, the minimum width needed for ensuring the seal, that the whole of a first portion of the movable plate (30) which is located on one side of a second straight line passing through the rotation center is lacking in openings, and that the passage openings (31, 32) of the movable plate (30) occupy in their whole only a part of a second portion of the movable plate (30), lying with respect to the second straight line opposite the first portion of the movable plate (30).</p> |
