(57) A ventilation assembly comprises a ventilator (5) for generating an air flow, at
least two rooms (6, 6') which can be provided with said air flow, and a valve (1)
which is connected to said units for optionally providing the rooms with an air flow
generated by the ventilator. The valve (1) comprises a valve housing (9) provided
with at least three connecting stubs (11, 12, 13), to each of which is connected a
room or the ventilator, respectively, and a valve body (18) which is accommodated
in the valve housing. The valve housing (9) comprises a central chamber (14) into
which the connecting stubs (11-13) issue. The valve body (18) has concentric concave
and convex cylindrical or concentric concave and convex spherical forms (19, 20).
The central chamber (14) also has an at least partially cylindrical or spherical concave
form, respectively, so that the concave form of the central chamber (14) and the convex
form of the valve body (18) are substantially concentric.
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