An aquassage apparatus for agitating water in a bath tub has a flexible, soft tubing which is pliable enough to be bent into different configurations. Suction cups are glued to the bottom of the tubing for secure attachment to the bottom of the bath tub. The tubing has a plurality of perforations for allowing compressed air to be horizontally injected therethrough. The tubing is connected to a tee junction at one end, the tee junction is connected via a valve to an exhaust port of a vacuum cleaner. The valve of the present invention has a cylindrical housing with a closed (capped) outer end with a plurality of slots and an open inner end connected to the exhaust port of the vacuum cleaner. The valve housing is provided with a lower annular valve seat sealingly engaged with the interior wall of the housing, a transverse port through one side of the housing above the valve seat and a bored cylindrical connector receptacle fluidly communicating with the transverse port and fluidly connected to the air feeder hose. Air slots provided through the sides of the housing below the valve seat can be open or closed by special flaps hingedly mounted to the interior wall of the housing. A spherical valve member within the housing is actuated by pressurized air which can move the valve member from the transverse port to a fluidly sealing engagement with the valve seat.The invention also provides a method of operating the aquassage apparatus.