Nexus | Flow of Innovation From the heat source to heat emission to heat distribution, Nexus covers a broad spectrum of innovative building technology systems. This internationally active group of companies has specialized in technical products and systems in the fields of installations, heating, cooling and solar solutions. The company belongs to Aalberts N.V. of the Netherlands. Product Types Since 1994, Nexus has been providing the commercial HVAC industry with products of the highest quality. At the core of each of our Hose Paks™ and Coil Paks™ is one of our industry leading flow control valves and combination valves along with all of our best in class accessories. Whether it is an automatic flow control valve or a manually adjustable valve, Nexus has the right products.