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Alfa Laval Plate Heat Exchanger

The plate heat exchanger consists of a frame, which consists of a head, follower, column, carrying bar, guiding bar, and a number of clamping bolts. In between head and follower a varying number of pressed plates are clamped together.

Each plate is supplied with a gasket, so that the plates form a closed system of parallel flow channels, through which the medias flow alternatively at every second interval.

The Plate Stack
The gaskets are glued on the plates, securing tightness between medias and the atmosphere. Between the different medias there are double gaskets, which have intermediate drain areas, meaning that mixing of the two medias is impossible.
Every second plate in the stack has to turn 180°, so that the plates form a closed system of parallel flow channels, through which the medias flow alternatively at every second interval.

Gasket Construction
The first plate after the head and intermediate frames is mounted with a gasket in all the gasket grooves.These gaskets are cut out of ordinary gaskets.

Glue Less or Glued Gaskets
Some plate heat exchangers are delivered with glue less gaskets. In these units it is possible to change the gaskets without using glue. However, the gasket on the first plate after the head and intermediate frame should be glued on in the pattern displayed above.