The plate heat exchanger consists of a package with linked up embossed plates with passage openings. Every second plate is staggered by 180°, creating a flow gap at any given time. All plates are provided with tied up or glued gaskets, which completely seal the various flow gaps from the outside and separate the media involved in heat exchange.
The plate package is mounted in a rack and is pressed between fixed plate and pressure plate by means of clamping bolts. During service life the gaskets of a plate heat exchanger are subject to a normal fatigue process and therefore the plate package can be retightened several times - dependent on conditions of use - until "PP"-min. is reached.
Connections of media involved in heat exchange are on the fixed plate, in case of multi-pass flow also on the pressure plate (see basic scheme below).
Special materials: Plate materials - depending on application - are chromium nickel steels, chromium nickel molybdenum steels, titanium and further materials.
Gasket materials are: NBR, EPDM, Viton, silicone and special materials
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