Hi Stephen,
Yes it's got the screw cap - the only difference I can see is the 'tab' on the adjustable plate isn't there so you rotate it by surface pressure alone.
I still can't quite work out how to extinguish it but I'll try it ourt over the wekend.
I want to try it at dusk to get a good idea of the flame pattern. I'll let you know if it's any good.
Cheers - Simon.
Remove the rubber ring from inside the cap and drop the cap over the burner to extinguish the flame, or just close the simmer ring if your using it