1.5" TC x 1/2" Female Thread (BSP) is very common within the homebrewing world and commercial sector.

This particular fitting is more often used for non-sanitary purpose transfers as there is an internal thread that is more difficult to clean.

However, this is the most popular fitting for 1.5" adapted glycol fermenter chilling solutions.
Made from 304 stainless steel and compatible with wide range of other standard 1.5 inch tri-clover fittings.