Wing, I am kinda slow . What are you asking :question: . If you are wanting to fill one tank from another it can be done if one is full and one empty but, dangerous in my opinion and why are you wanting to do this? Best to leave filling to the pros with the proper equipment but I am probably reading your post wrong. Little more of what you are trying to do would help or maybe some of the others here can advise you.
Hey Wing and Chelse,
If I were Wing, I'd look into getting one of those "extend a stay" connections. I would not try and fill one tank for another (I am guessing he wants to fill his "perm" tank on perhaps a class a in lieu of driving to a lp fill dealer.