Hi UB,
That looks like the same unit as mine but taken out of its frame, supplied by Hamilton gas Products,
I tried this in my tandoor, temperature wise no problem at all, and as you say you need a shield to stop the heat getting back toward the valve and hose,
The only problem I found was it made the clay a little damp from the water vapour given off by the combustion of the propane,
It wasn't an option to run natural gas to the tandoor,
Good luck with mate,
Bob