actually its not 10-11PSI, its 10-11 inches of water column. much less pressure than PSI.
in order to use that stub for a grill, you will need a grill that does not have a regulator on it (as in its already setup for 10-11" WC).
I messed with this idea for a long time. finally ended up just using the small bottles to run my baby Q. This way I did not have to "gut" the regulator and I can still use it away from my RV.
There is an T adapter they sell that goes on the big bottle before the RV hooks up. this T has small hose that goes to gas grill with same fittings as a small bottle. But it was over $50.00. that buy a lot of small bottles.
