They have an adapter that will go from the vac pipe to 2" PVC. You might need one on each end of your system to use STD 2" PVC. After you get your route selected, use standard PVC primer and glue to make the connections.
They know their stuff, and don't try to over sell you on things you don't need.
Not sure if you got your answer, but the pipe is just PVC piping and there is special glue that is used, but any pvc glue from HD will work. They have both a Central Vac section and a plumbing section you could get the glue at.
P.S. Don't forget to reroute the low voltage wire as well.