The gasketed-plate heat exchangers of the NF series (photo) offer a free flow for all media. Unlike traditional models with herringbone corrugation, which have tapered flow channels, the channel cross-section of the NF series is always consistent. This allows particles to pass through more easily. The free-flow plate heat exchangers have a regular plate gap of up to 10 mm and a coarsely corrugated plate profile, ensuring a blockage-free operation with fibrous and solid media at high heat-transfer performance. The manufacturer’s brazed-plate heat exchangers are used in the paper-and-pulp production process as highly efficient heat pumps, for example. They are characterized by a compact design and low investment and operating costs. — Kelvion Germany GmbH, Bochum, Germany