| 摘要 |
The present invention relates to flushing fittings having a bottom valve body (13), which is fixedly connected to or formed integrally with a float (22). The bottom valve body is adapted to seal against a valve seat (12) with a sealing area and to be lifted from the valve seat by means of an actuation mechanism (20). The actuation mechanism comprises a flush actuation means (24). The float (22) has such a volume that its buoyancy is always greater than the sum of all downwards directed forces acting on the valve body, the float and the means connected with the float. The actuation mechanism (20) has a retaining device (25) which is arranged to prevent the float (22), in the rest position of the flushing fittings, from lifting up the bottom valve body (13) from the valve seat (12). The flush actuation means (24) is arranged to release the retaining device (25) when flushing. |
