Abstract: A whirlpool bathtub and a valve device for such a tub. The tub has a molded tub part and at least one, preferably two removable, circular bottom elements which match recesses in the tub part. The bottom elements can be attached to the tub part by means of central screws. From an external pump device, air is supplied to the valve device and on to preferably two defined chambers in the tub, each of which is composed of a recess with an associated bottom element. Each bottom element has apertures for the supply of air from the chambers to the water in the bathtub. The valve device simultaneously constitutes a bottom valve for draining water from the tub to a plug hole. The tub is easy to keep clean, and may in addition be manufactured in a simple and cost-effective manner.