I have a 1.5" triclover heat exchanger. It measures 36" long and has a 1.5" tri clover tube going through a 3" outer shell. This gives a half inch jacket around the inner tube. The jacket has 1/2' female pipe thread inlet and outlet that are offset 180 degrees. This could make a cool rims style tube with no chance of scorching, or could be used to condense steam vapor into liquid, if you are so inclined. It was used in the food processing industry, when I got it, it was packed full of what looked like cocoa mix. Price is $60.00 shipped. Paypal accepted, and shoot me a P.M. if interested.