The analytic solution of the equations of spin hydrodynamics of a normal Fermi liquid, which describes a stationary precession of spins in a nonuniform magnetic field in the collisionless limit is discussed. This solution has a form of two domains with the opposite orientations of spins. The derived properties of such a structure agree qualitatively with the experimental data for liquid solutions of 3 He in 4 He and with the results of numerical simulations.