Harley, I would tend to agree with you, we're talking a difference of 20 bucks here. I'm not sure I agree with Tygon in a festo fitting myself, we had some problems down here with tygon in festo fittings over time as the tygon starts to shrink or change over time. The hard tubing doesn't seem to do that. Although I've also never seen where hard tubing in a festo could be moved slightly and achieve a leak because of it. there seems to be some play built into the festo fittings to cover this.

That being said, most of my installations these days don't include festo fittings at all. The shut off valve that Jetcat and others sell is a barbed shut off, and there are some other check valve options for propane fill.

Anyway, FWIW.