Universal Hydraulik TL plate heat exchangers consist of a number of corrugated plates. The plate pack is mounted between a fixed and a movable pressure plate, positioned by an upper and a lower carrying bar, and compressed by several tightening bolts. Gasketed type plates and welded modules with various patterns are available for a wide range of applications. The media can pass the heat exchanger either in cocurrent or counter-current flow. Depending on the operating conditions media and temperature-resistent gaskets of the glued on or clipped on version are used. The welded plate module forms are hermetically sealed flow channel to the outside. The transition from one module to another is sealed by a ring gasket made of a special material.