Found the one I have, it's this one exactly:
http://www.jlaquatics.com/phpstore/s...&Submit=Submit
The other one that J&L sells will require me to drill a hole in the side of my barrel (it fits like a bulkhead), and the water line would attach on the outside of a barrel. It looks like it has the same style of compression fitting though. Not sure if that's even worse though, as if the water line popped out, the water would be going right on to the floor. When it pops off inside the barrel, sure it makes the barrel overflow, but at least some of that water ends up being used to top off the tank so it's not overflowing at the full rate of the RO unit.
ETA, sorry didn't copy that link right. I have the Eshopps valve