Sacrificial Anodes

Sacrificial Anodes

sacrificial anodes generally come in three metals: Magnesium, Aluminum, and Zinc. Magnesium has the most negative electropotential of the three  and is more suitable for on-shore pipelines where the electrolyte resistivity is higher.   If the difference in electropotential is too great, the protected surface (cathode) may become brittle or cause disbonding of the coating.

Zinc and aluminium are generally used in salt water, where the resistivity is generally lower. Typical uses are for the hulls of ships and boats, offshore pipelines and production platforms, in salt-water-cooled marine engines, on small boat propellers and rudders, and for the internal surface of storage tanks.

The advantage of sacrificial anode systems over others are they need no external power source, are easy to install, the low voltage and current between the anode and the surface it is protecting infrequently generates stray current, overprotection is unlikely, and inspection and monitoring is simple

Electro Eliminator
£66.74

Electro Eliminator

Prices Exclude VAT

For up to 2" Shaft Diameter Electro-Eliminators offer the most effective shaft bonding solution Electrical brushes run directly onto the prope...

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£66.74
Zinc Shaft Anodes (Imperial) - T.Norris Marine
from £29.85

Zinc Shaft Anodes (Imperial)

Prices Exclude VAT

Sacrificial Zinc shaft anode. For use in Saltwater only. The MGD range of shaft anodes are known for their superior quality and are particularly w...

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from £29.85
Zinc Shaft Anodes (METRIC) - T.Norris Marine
from £31.91

Zinc Shaft Anodes (METRIC)

Prices Exclude VAT

Sacrificial Zinc shaft anode. For use in Saltwater only. The MGD range of shaft anodes are known for their superior quality and are particularly w...

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from £31.91

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