  We aim at proving existence of weak solutions to the stationary compressible
Navier-Stokes system coupled with the Allen-Cahn equation. The model is studied
in a bounded three dimensional domain with slip boundary conditions for the
momentum equations and the Neumann condition for the Allen-Cahn model. The main
result establishes existence of weak solutions with bounded densities. The
construction is possible assuming sufficiently large value of the heat capacity
ratio $\gamma$ ($p \sim \rho^\gamma$). As a corollary we obtain weak solutions
for a less restrictive case losing point-wise boundedness of the density.
