I think the low pressure quick connect kit for the 20 lb. tanks works with the Big Buddy and the smaller Buddy. My thought was maybe this would replicate the end of the hose they also sell that connects to the Mr. Heater Buddy (smaller one). So then this would connect (the quick connect end) to our low pressure lines already in the camper and then the big end would connect to the Heater Buddy line in the same way the other hose would. That end looks the same as the one I linked, but it's hard to say for sure from just images.