Do I Install Tape or Valve First on a Tubeless Rim I've just unpacked a tubeless wheelset and I'm installing tape and the valve. Which goes first? The tape or the valve?

My wheelset is the DT|Swiss Tricon R 1700. And the manual says: "Mount the DT Swiss valve as shown in the picture. Make sure that NO rim tape ist mounted."[sic]
Having looked a bit closer, I see these are tubeless specific road wheels. These shouldn't need a rim tape at all.

Just, make sure no rim tape ist mounted, stick the valve in, screw it on and mount your tires.

PS. This has complete instructions on page 10.
http://www.dtswiss.com/Resources/Support/WHEELS/WHEELS-User-Manual.pdf