Ok all.. it's called Extend A Stay Kit... I got mine from my RV dealer but you can buy it at Camping world too... and have them installe it on your Propane tank.. this is for Class A's and Class C's.... it allows you to stay parked and you can buy the extra propane (portable) propane tank to get refilled without having to worry...
When I stay at a place a long time, I just close my main propane tank (that I have for emergency) and I hook this tube to my main tank and attach the portable tank and ta da.. you are set and ready... I've used this system for years now and never had a problem.. of course I always make sure everything is working.. I use a spay bottle filled with soapy water to spray on the connections to make sure nothing is leaking... that's something you always want to do when hooking up to propane anyway...
When we had some cold winter months in Florida and everyone was going through propane pretty quickly.. I had my extra bottle hooked up.. one place even let me hook into a 100lb tank.. that was wonderful.. but I do carry a 60lb one with me.. now I've seen others just use the gas grill tanks I think they are 20 lb ones.. I've seen that alot they have several small ones....but you all know me... layback.. I use the bigger tank.. hey, I just load it in my car and drive it to the fill station and look dumb .. always someone is there to help LOL... see so it's not bad looking dumb !!!! hahahaha..
This is something I've done since in the winter months I showed dogs in the north.. and trust me .. a larger rig goes through propane rapidly.. and I definitely experienced that one.. and you know what.. have it happen one time and you will remember that feeling ooooooh yeah... so I carried my tank and hooked up and we were toasty... See not all us dog show people aren't wise to these tricks...
Ok,,,, that's all I have to say.. cepting check it out.. the cost is not that great and boy if it saves you work.. Why not !!
I also can run my gas grill without using the small bottles if I want with the spit type hose ..so there are many possibilities
PS oh I also just got an adapter that tells me when my portable tanks are running low too... that I got from QVC..
Hooks up to the tank...aaaaaaaah good deal....
God Bless