The BrandTech 704270 Stainless Steel Thread Adapter allows a BrandTech Remote Dispensing System and Direct Mount Adapter (sold separately) to be used with a 2" drum bung. It has a 2" outside diameter, and is made of stainless steel for corrosion resistance.
BrandTech Scientific distributes Vacuubrand vacuum equipment in the U.S. and Canada. Vacuubrand, which is headquartered in Germany, manufactures laboratory and instrumentation vacuum pumps, gauges, and controllers.