A filling valve for filling a container with a filling product, e.g., a beverage in a beverage filling system, includes a valve base body. The valve base body includes an outlet configured to discharge the filling product into the container; a swirl chamber configured to receive the filling product and is able to be brought into a fluidic connection with the outlet; and a main inlet, which feeds into the swirl chamber and is configured to introduce at least one main component of the filling product into the swirl chamber such that the filling product is swirled in the swirl chamber, whereby after exiting from the outlet the filling product flows downwardly in a spiral movement in the container. The swirl chamber has an annular shape, the cross-sectional contour thereof having a rounded shape, substantially without corner points, in the direction of extent and perpendicular to the direction of extent.