How it works

The product flows in the centre channel (fig. 2) meeting the service media in the inner and outer channel to get full countercurrent flow and thereby efficient heat transfer.

Installed as a complete point-of-use cooler the heat exchanger is kept sanitized all the time. In stand-by mode (fig. 4), part of the hot WFI is taken via the pitot tube (fig. 3) for a continuous flow through the heat exchanger. Hot WFI is possible to take out through the user point. When cold WFI is needed, the cooling mode (fig. 5) is turned on by an air switch, which closes the recirculation valve and opens the cooling water valve. Within seconds cold WFI is available.