I have little help for you, but I'm very interested in how this goes! I was thinking that would be a neat gizmo for us. Since we have so much drought, a highly controlled propane fire might be something we could use when an actual fire might be a little too dangerous...
My limited knowledge tells me that it has to be regulated one way or another. Your QC (if you have one) is already regulated. However, if you hook directly up to a tank, I would assume you need a regulator somewhere. Perhaps there's one built in?
2014 Jay Flight 28 BHBE
2015 RAM 2500 6.4L HEMI, Tradesman 4x4, 3.73
Blue Ox SwayPro (BXW 1503)
Upgraded from an REI internal frame backpack and a Eureka 1/2 dome tent!