Flat plate
 
Aluminium and aluminium with epoxy coating.

The Heatex Model F exchanger is manufactured with smooth aluminium plates that are either untreated or epoxy coated. The smooth plates allow even heavy dirt to pass through the channel without getting stuck and fouling or clogging the exchanger which makes it ideal for very polluted environments.

Model F allows a differential pressure up to 800 Pa, whereafter permanent deformation of the plates is possible.

A single pass exchanger can provide an efficiency of 55 - 70%.