Guess I'm a little bit confused as to what you're saying here. Do you by chance have a photograph of the set up? I have installed a four-way cross from the regulator on mine, so I have an extra port, that has a plug-in it at the moment. My new refrigerator does not use propane at all, so that line is gone. I do have one that goes to my Atwood furnace, and then a second one that goes to the stove. What I have available is a 3/8" NPT female connection, which of course can be adapted to all kinds of things. I'm just rather sketchy on the fittings you're talking about. Ideally, I want something that is very easy to attach and disconnect. More than likely, it will be three o'clock in the morning when I run out of propane at 20�-- isn't that always a way of it? Something that is kind of idiot proof is what I'm after. 

Troy