Can you route to fittings that aren't in the design library?

I am trying to route piping for a design that uses fittings and valves that are not in the design library (Swagelok). I was told that it was possible (presumably to save the time of adding these parts to the design library). I would normally just design my own pipes and do it the hard way, but every pipe or bend would need to be put into PDM, which would add clutter and time to the process. Is there an easy way to do this?

SolidworksRouting