Sure. That's what it is designed to do. The vacuum assists your foot by pulling the piston in master cylinder. The check valve prevents boost from coming inside chamber and acting against your foot pressure. There should only be vacuum going to brake master. Boost=bad, Vacuum=good.
Even the power brakes work without the vacuum, a little scary at first when you discover the loss, but they do work.
or you could...
Get regular or non-"power brake" master cylinders.