Importing Solidworks and Meshing

Hello,

I am fairly new to COMSOL, but am wondering if there is a quick way to import a 3D model from solidworks, let's say a valve, and be able to generate the "empty" space within the valve, which will then be meshed and studied using the laminar flow and heat transfer studies? Or would I have to generate the "empty" space within solidworks and then import that into COMSOL for meshing and analysis?

Thank you in advance for your time and replies.

Regards,
Alfredo