Rotary valve for a control unit with several selectable outlets for water distribution systems.
The valve comprises a fixed external casing (1) provided with an internal cavity (5) with an axial inlet port (2) for water from mains and at least two transversal outlet conduits (3, 4) for water to flow toward different water distribution systems, and a rotary internal casing (6) in the form of a cup inserted in said internal cavity (5) of the fixed external casing (1) and provided with a transversal water outlet hole (7) suitable for being placed selectively in communication with one of the conduits (3, 4) by rotation of the rotary internal casing (6). It also comprises an auxiliary internal casing (8) inserted axially in said rotary casing (6) and provided with at least two transversal holes (10, 11) aligned with said outlet conduits (3, 4) of the fixed external casing (1). Said auxiliary casing (8) has one of its end flanges (16) up against a shoulder (18) of the external casing (1) to allow the latter to absorb the hydraulic pressure of the water at inlet without this being transmitted to the rotary internal casing (6). <IMAGE>