Immersion Heaters with Thermostat and Insulated Heating Element

Immersion heaters are electrical devices designed for heating water in both open and closed tanks. These heaters can only be installed in systems where they remain submerged below the water level at all times.

The insulation of heating elements is achieved by mounting them in a flange that is isolated from the head, which is entirely made of brass, including the threaded connection. This insulation is used to eliminate the galvanic connection between the heating elements and the tank.

When a galvanic connection occurs between a metal with a negative potential (the material of the tank's casing) and a noble metal with a positive potential (the material of the heater’s heating element), a galvanic cell is formed. This reaction accelerates the dissolution of the magnesium anode, causing magnesium deposits on the heating elements while the tank casing undergoes corrosion.

This solution optimally protects both the heating element of the heater and the tank from accelerated electrochemical corrosion while maintaining the cathodic protection of the tank. Additionally, it extends the lifespan of the magnesium anode.