| 摘要 |
<p>In combination, a cistern and flushing apparatus, the cistern having an outlet (7), and the apparatus comprising a valve (3, 5) for closing the outlet, the valve having a seat (5) and a sealing member (3) movable onto and off the seat, an actuating float (1) constrained to move substantially vertically in the cistern and connected with the sealing member so that the buoyancy of the float acts to press the sealing member onto the seat, means (10) for holding the float against its buoyancy and an actuation mechanism (18, 18, 11) for releasing the float thereby to open the valve.</p> |
