Inflatable water sports device, valve device and valve system

An inflatable water sports device, which comprises at least one inflatable structure with a valve device, via which air can be supplied to an interior space of the structure and which comprises a valve housing with a passage opening and a valve body for closing the passage opening airtightly, wherein the valve body is movably attached to the valve housing via a mounting,

• wherein the valve body is rotatable about an axis of rotation relative to the valve housing via the mounting, wherein the mounting is designed such that the valve body, starting from a first angular position, in which the valve body can adopt a closed position closing the passage opening, can be brought into a second angular position, in which the valve body can adopt an open position releasing the passage opening and in which the valve body cannot adopt a closed position, by rotating about the axis of rotation with an actuation angle α, with 0°<α<360°,
• and the mounting is designed such that it allows a continuous rotation of the valve body, so that the valve body, starting from the first angular position, can be brought into the second angular position by rotating about the axis of rotation with an angle of rotation βn=α+n·360° for every n∈.