I've had one of these (bought through bargain fittings, pointed out in case there are any differences in materials used) on my HLT for about a year now. It works great, and I've had no problems. The only "issue" I did run into is that, since the stainless T fitting for the sight glass and the thermometer sits just a tough higher than a typical sight glass fitting, I had to cut the sight glass down by an inch or two to keep its top just below the top of my keggle (I like to store my keggles upside down, and this would have risked damage to the sight glass). Bobby may already account for this in his kits.
