| 摘要 |
<p>A control device (1) for flush tank drain valves has a control member (2); a tie (5); a first lever system (7) connecting the tie (5) to the control member (2); a second lever system (8) connecting the tie (5) to a drain valve; and a connecting bush (17), which has a seat (28) engaged by a threaded portion (20) of the tie (5), and is hinged to the second lever system. The threaded portion (20) has a flat longitudinal portion (21), and the seat (28) has a threaded longitudinal sector (32) inside. The connecting bush (17) and the tie (5) are set in a slide position, when the flat longitudinal portion (21) faces the threaded longitudinal sector (32), and are set in a lock position, when the flat longitudinal portion (21) faces the opposite way to the threaded longitudinal sector (32).</p> |
