The Minex is a hybrid PHE (plate and frame heat exchanger) sealed by gaskets rather than brazing. It is a small unit, so it does not need the typical support frame used for traditional PHEs. The gaskets and plates can be of various materials, and the frame and plate materials need not be the same. The snap-in-place connections allow different metals to be used without the risk of weld deterioration.
Related documents: Product data sheet