Magnesium Hot Water Heater Anode Rod , Sacrificial Anode Rod Bars for RV waterh heaters

Magnesium Anode Rod - 3/4 inch BSP

Water heater anode rods replacement

The magnesium anode, in the form of a rod screwed into the domestic hot water heater, prevents electrochemical corrosion in the heater and, alongside the enamel layer, is a further form of active protection for the heater. The use of different installation materials with different potentials, such as steel, copper and brass, means that corrosive microcells occur in the electrolytic water and electrochemical corrosion takes place. The magnesium anode can equalise the differences in potential between the metals. When magnesium anodes are mounted in series in enamelled heaters they deteriorate with time and need to be replenished to prevent corrosion of the heater itself. The speed at which the anodes deteriorate cannot be precisely stated and depends, among other things, on the hardness of the water. For this reason it is advisable to inspect the anode once a year and to change it if it is more than two-thirds depleted in relation to its initial volume. In all instances, though, it should be changed every two years. The anode must be changed regularly to maintain the validity of the heater’s guarantee.

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Vivian Jiang(Ms.)

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