For specialized applications, the Polaris Shell and Plate Heat Exchanger delivers an engineered solution of great efficiency and effectiveness. Shell and plate units consist of an outer pressure vessel that encloses a fully-welded circular plate pack. The resulting heat exchanger is strong and compact. Like other welded heat exchangers, it is made gasket-free and without brazing. As such, it avoids the problems of leaks and corrosion that sometimes accompany gasketed construction.