AlfaDisc AlfaDisc is an all-welded circular plate heat exchanger based on the plate-and-shell concept, making it ideal for uses involving high pressures and temperatures.     Compabloc The Compabloc welded heat exchanger is probably the most compact and efficient heavy-duty heat exchanger in the world.                 Spiral heat exchanger The all-round heat transfer solution. Exceptional compactness and self-cleaning design make Alfa Laval spiral heat exchangers extremely versatile. Ideal for everything from dirty fluids to high vacuum condensation.