Abstract: An improved distribution valve is provided that distributes water from a swimming pool pump to cleaning heads located along the inner surface of a swimming pool. The distribution valve includes a housing having a fluid inlet and a plurality of fluid outlet ports. The housing includes a lower section and a removable upper section. A gear reduction assembly located in the housing includes a gear reduction mechanism and impeller located near the inlet port and connected to a rotary input shaft of the gear reduction mechanism. A cam device engages a rotary output shaft of the gear reduction mechanism so as to rotate the cam device in response to rotation of the impeller. The cam device rotates under a pliable annular disc on the rotary output shaft and lifts and lowers portions of the annular disc to sequentially open and close fluid paths through the fluid outlet ports.