In cases where regulations or other reasons require special safety, a double wall heat exchanger must be used. The individual plates consist of two extremely thin plates that form a narrow and protective leakage gap. In case of failure, e.g. rupture of a plate or corrosion, it is guaranteed that the water of the affected circuit will be pushed out, so there will be no problem with the mixing of two liquids. Often, toxic antifreeze, such as glycol or similar harmful substance, enters the primary heating circuit but should never come into contact with people or the environment. Double wall heat exchangers protect people and the environment. For a long service life, pay attention to the technical safety features and assembly instructions.
