Damper valve arrangement for damper

The invention relates to a damper valve device for a vibration damper, comprising a valve carrier having an annular groove in which a valve element having a variable diameter is arranged, the valve element having a flow guide surface forming the throttle, and the valve carrier having an annular groove in which the valve element having a flow guide surface forms the throttle. The cross-section of the throttle point decreases as the flow velocity of the damping medium in the throttle point increases, and wherein the annular groove forms a pressure chamber with the cover surface of the valve element and with the lateral surface of the annular groove of the valve carrier, which pressure chamber is connected to the working chamber of the damper via an inlet and an outlet, an outflow cross-section of the outflow opening is limited by the annular groove flanks and the top side of the valve element, the size of the outflow cross-section being determined by a radial expansion of the valve element relative to the valve