Abstract: The invention relates to a flush for toilets containing a container with an air vessel, a connection piece for the network, a connection piece for the flush, a valve housing comprising a control device and an injector tube. A suction device is joined to the injector tube. The flush is characterized in that an air-refilling opening (7) is arranged in the valve housing (6) underneath the control device (10) that is suitably accommodated in the valve housing (6). A jet tube (15) is arranged above the control device in order to deviate the flushing water. An air-introducing chamber (5) is arranged in and/or next to the jet tube (15).