Plates and connections are made of AISI 316 SS. Brazing material is either copper or nickel.
Pressed metal plates are assembled in a plate pack with the chevron pattern reversed in every other plate. The ridges of the pattern intersect on adjacent plates - forming a lattice of contact points. Each adjacent pair of plates forms a channel. The stainless steel plates are then brazed with copper or nickel in a high temperature vacuum furnace.
The hot and cold media are in counter-current flow to each other in alternate channels. The plate pattern induces intense turbulence in the hot & cold passages - resulting in a high heat transfer coefficient and low fouling tendencies.