Pressure in the production cycle is at least 0.5 bar higher than pressure in the water cycle. The booster pump makes sure that the pressure on the pasteurised milk is always at least 0.5 bar higher than that on the non-pasteurised milk.
Should a leak occur in the heat exchanger, the pasteurised product will always be forced into the unpasteurised—never the other way around. In accordance with EU guidelines, it is thereby guaranteed that even in the case of a fractured plate, water can never get into the production cycle.
You can be sure: only 100% perfectly pasteurised milk leaves your facility.
The viewing port makes a quick leak check of the heat exchanger possible. If the water is clear, the plate cannot have cracked.