And it’s a Barbie in Australia,.. or maybe only at an Outback!
I have a Marshall changeover reg that has a pipe nipple between the stages and it is 18 psi there. Years ago I added a tee, valve and hose with a cga 600 fitting for my grill and the 18 psi is enough to allow using the rv grill regulator and get to the high-fire orifice pressure.
You can remove the regulator on your grill and connect to the Rv 11” system but then you still need to control the flow/heat . Then you can try a needle valve and it still might not work. The mfgr can build the burner to run on whatever pressure they want. I haven’t had an Rv grill yet that only worked on 11” orifice pressure. 11” to my old Olympia grill would only make it warm. It was built for 15””. My Charbroil IR Rv grill regulator blew the water right out of my 30” U gauge but it was actually way TOO hot. I backed the reg down to 18” and it’s all good now… good heat range.
I’ve read there are Rv grills in captivity that can use whatever control they came with and run on 11” input but I haven’t actually seen one yet. Craig