Patent ID: 7926505

Claim:
A transfer unit for a vehicle, for the disposal of grey water from a wash basin to a vacuum waste-water system, with the transfer unit comprising: a first connection arranged for connecting the transfer unit to an outlet of the wash basin; a second connection arranged for connecting the transfer unit to the vacuum waste-water system; a self-opening valve with a floating body, arranged for independent drainage of grey water, which has been held in interim storage in the transfer unit, from a wash basin to the vacuum waste-water system when the grey water held in interim storage in the transfer unit exceeds a predetermined fill level height; wherein the self-opening valve comprises a valve disc for sealing the second connection; wherein the valve opens in that the valve is pulled upwards by the floating body floating in the grey water, when the predetermined fill level height is reached; the transfer unit further comprising: a control valve block with a vacuum connection; wherein the control valve block is arranged for selective opening of the valve; and wherein the control valve block for opening the valve sucks the floating body upwards so that the valve disc moves away from the second connection, thus releasing the vacuum waste-water system; wherein the floating body comprises a roll membrane; wherein the roll membrane is arranged for rolling off an inside of a housing and for sealing a transition between the floating body and the inside of the housing.