I used to brew with gas, but found it difficult to maintain temperature with any accuracy, which resulted in significant variance in my brews. So, I did a lot of looking around at other systems. Finally decided that the "K-Rims" system Blichmann makes (Breweasy) was excellent for my needs. Fairly compact space and lots of volume. Then, looking at my current equipment, I decided that with minimal investment, some creativity, cutting holes, and a bit of luck, I could convert my equipment to mimic a breweasy at a fraction of the cost.
It took me about a year of gathering parts, selecting a controller, building the controller, so on, so forth, dragging my heels and whatever, but eventually got it built. All connections are now quick disconnects. Went through several iterations of leak testing and fixing, but finally did my first brew on it a week ago.
Worked beautifully! Maintained temp within a degree. OG ended up higher than expected, which means I need to fine tune my profile in BeerSmith.
Anyway, here is a pic of it in process (Ignore the other random crap). Not much to see really. But I decided to have the flow go into the hops hopper just to reduce spash. It was a small 5gal test batch of Irish Red. The system can brew 10 gallons with plenty of spare room.
10 gal and 18 gal from Bayou Classic (Amazon)
Quick connects, hopper, tubing, and pretty much everything else from Amazon. Some from NorthernBrewer.
Control panel is a 30a BIAB from EBrewSupply.