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Compabloc Free Flow

Product Description

Alfa Laval Compabloc Free Flow is a compact condenser with very high heat transfer efficiency specifically designed for the pharmaceutical industry and the high hygienic requirements of modern API production. The hygienic design, high performance, low operating costs and easy installation combine to ensure patient safety, reliable uptime and production efficiency.

Pack more condensing capacity into existing space in your API production

  • Easy to validate – fully meets the requirements for installation in cGMP processes
  • All-welded design and available in corrosion-resistant materials, making it the perfect replacement for graphite block or shell-and-tube
  • State-of-the-art hygienic design makes cleaning quick, easy and reliable while low hold-up volumes reduce cleaning solvent usage
  • Compact size and low weight enable you to increase capacity even when space is limited – perfect for retrofitting
  • Proven low operating and maintenance costs

How it works

The Compabloc Free Flow comes in two versions. At its core is a stack of corrugated heat transfer plates made of stainless steel or alloy C22 that are alternately welded to form channels. The vapour and the cooling medium flow through alternate channels, causing the vapour to condense on the cold plates. The wide free-flow channel results in a very low pressure drop, making it ideal for deep vacuum condensing duties. On the coolant side, baffles direct the cooling media back and forth through the channels to increase turbulence and thermal efficiency.


The complete plate pack slides inside a steel frame bolted to pressure-retaining heads. Four removable panels contain the inlet and outlet connections and give easy access to all product-wetted surfaces.


Single-pass condenser


This version is suitable when the vapour contains small amounts of inert gases. Vapour enters through the big inlet on the top panel and condenses on the plates. The condensate exits through the sloped, drainable bottom panel.

Two-pass condenser

Two-pass condenser

The two pass version can be used when the vapour contains a larger portion of inert gases. Main condensation takes place in the first pass where the condensable part of the vapour condenses on the plates before exiting through the sloped, drainable bottom panel.

The non-condensable vapours go through the second pass where they are sub-cooled to maximize condensation. Turbulence in the second pass helps to eliminate mist, and vacuum is easily drawn from the outlet of the second pass. With a two-pass condenser there is no need for an additional vapour separator, since separation takes place in the unit.

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