So thanks everybody for all the discussion on the Outland Firebowl.
We got one also several months ago. Well technically it was a present to the other half for Xmas - but you know how that goes.
Anyway wanted to convert our set up to run off the low pressure trailer so did the same starting point which is to remove the existing hose and regulator. However I wanted ours to be able to connect to a low pressure extension hose instead of permanently attaching a conversion hose to the unit. So instead we put this on - it converts direct from the 3/8” female flare on the unit to a male 1/4” plug. This allow it to plug into the Female 1/4” low pressure LP extension hose from trailer: https://www.amazon.com/gp/aw/d/B082683LGZ
Also with this setup got one of these to be able to quickly Plug it back up directly to the high pressure tank. It has a regulator: https://www.amazon.com/gp/aw/d/B07YSTTZVN.
duke3k