Deller’s safety heat exchanger meets the demanding requirements of the American Health Authority FDA and also the GMP requirements to their full extent. Due to its double tubes and double tubing plates it guarantees that neither mixing nor impurities to the tube or casing side guided media can take place if there is a leakage. The safety space is empty and can be monitored in the pressure or vacuum areas. The product space is constructed to guarantee full emptying. A further feature of this safety heat exchanger is its capability to sterilise in order to fulfil absolutely clean conditions for product or batch changes. Special care is taken when selecting and constructing the device’s flange gasket, full sealing is also guaranteed for vacuum operation because otherwise germs could enter with the leakage air. The surfaces of the product space are processed in electrolytically polished finish up to a coarseness of Ra <0.4 µm, according to the requirements. If installed in clean rooms, a gasproof welded isolation can be provided.
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