Abstract: A valve device having a valve housing (4), in which a hollow valve part (6) is guided in a longitudinally movable manner, which valve part, controlled by an actuating device (8,14), in at least one open position opens the fluid path through the valve between a fluid inlet (E) and a fluid outlet (A) along a predeterminable flow path for a fluid and in a closed position, in which the valve part (6) is in contact with a valve closing part (10) from which it lifts off in the respective open position, blocks this fluid path, is characterized in that there is at least one flow guide device causing an at least partial reversal of direction in the flow path of the fluid emerging from the valve part (6) as soon as the latter assumes an open position.