Ok, I'm back from, seemingly, the grave with updates. Been a little under the weather but...here is what I got for $302.00...




There is 30' of the yellow poly-coated copper tubing involved...in the first picture you can see the gas tank and the other end of the tubing. The jacketed hookup hose is 10' long. I dug the trench before they arrived..guy said it would save me some money. They charged $75 for the trip and labor, which I didn't think was bad. The only thing I saw that might have been a bit high was the 10' hookup home @ $78.
I was caught off guard when they arrived. Me and the service guy had looked at the current system and had agreed on installing a tee at the tank and adding a high-pressure regulator there beside the low-pressure house regulator. Well, you see what I found when I came back to see how they were doing. No tee at tank, no high-pressure regulator, and they had already connected the hookup hose to the generator. I told the guy that this wasn't what we had discussed and he told me it "ought to work", to try it and if I had a problem let them know. I feel that they'll stand behind their work but I haven't had a chance to install the transfer box yet and haven't been really able to drag the extension cords to the refrigerators. Maybe tomorrow. Hopefully with the refrigerators and a couple of other items running the generator will run fine.
But, here is the problem. I went out this afternoon going to disconnect the hookup hose and move the generator back inside the garage. It's been sitting beneath a tarp for the last week or so. We're supposed to getting rain for the next week so I figured I'd get it inside. Before I disconnected it I cranked it and let it run for a couple of minutes and shut it off. No problem there.
I then started to unscrew the hookup hose fitting and it was very snug, too snug. I turned it a few rounds with no swivel action in the hose/adapter...the hose just twisted up. I peered a bit closer and turned it again and I saw the brass fitting on the generator turning. The hose is jammed onto the propane fitting of the generator and will not come off. Before I cranked it the first time, while the service guys were there, the older main guy told the younger one to check the tightness of the connection there so he put a wrench on it and gave it a shove. Like I said, they had already tightened the hose onto the generator when I got there. I'm thinking they simply over tightened it. Now I'm worried that the connection there has been compromised...or, is the connection made to "move" some? I'll be calling them Monday.

One thing that I am curious about. Is this the correct fitting on the end of the hookup hose? I don't know what kind of metal it is but it looks a bit "pitted", with possibly some corrosion/oxidation on it. What is bugging me is the chance of galvanic corrosion happening between the brass and whatever metal that is. I was in the tire business and have laid on my back under vehicles beating aluminum wheels off many a steel hub. Any thoughts on this hookup hose and adapter?
It seems like the more I move forward the further behind the eight ball I am.
Thanks!