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DN20
Solaraven
8419901000
The Magnesium Anode for Hot Water Storage Tank (also known as a magnesium rod) is a core protective component engineered by Solaraven to safeguard hot water storage tanks from corrosion and performance degradation. Based on the sacrificial anode protection principle, this high-purity magnesium product prioritizes chemical reactions over the tank’s inner metal, forming a protective barrier that extends equipment lifespan. Available in multiple standardized sizes, it fits most residential and commercial hot water storage tanks, addressing issues like scale buildup, energy waste, and water quality deterioration. Whether for solar water heaters, electric water tanks, or industrial hot water systems, this magnesium anode delivers reliable corrosion protection to keep your equipment running efficiently.

Magnesium exhibits higher reactivity than the inner tank metal (such as steel or enamel-coated steel). When installed, the magnesium rod reacts preferentially with calcium, magnesium ions, and other corrosive substances in water, forming a stable polarized film on the tank’s inner surface. This process diverts corrosion away from the tank itself, preventing rust, leaks, and irreversible damage—ensuring the inner tank remains intact for years.
In hard water areas, scale buildup on heating tubes is a major cause of reduced heat transfer efficiency and increased energy consumption. The hot water storage tank magnesium anode mitigates scale formation through targeted chemical reactions, minimizing mineral deposits on heating elements. This not only maintains optimal heat transfer but also lowers energy costs by reducing the workload of the heating system.
For enamel-lined hot water tanks, accidental damage to the enamel coating can expose the underlying metal to corrosion. The magnesium anode activates an automatic protective mechanism when such damage occurs: it generates a low-level output current that repairs minor cracks in the enamel liner, providing dual protection against both external corrosion and coating damage. This proactive safeguard prevents sudden tank failures and extends the overall service life of the equipment.
Parameter | Details |
Model | DN20 |
Brand | Solaraven |
Code | 8419901000 |
Sizes (Diameter × Length) | 3/4inch × 200mm, 3/4inch × 300mm, 3/4inch × 500mm, 1inch × 200mm, 1inch × 300mm, 1inch × 500mm, 1.25inch × 300mm, 1.25inch × 500mm, 1.5inch × 500mm, 2inch × 500mm |
Material | High-purity magnesium |
Recommended Replacement Cycle | 1 year (3 months for areas with poor water quality) |
In-Stock Quantity | 100 pcs |
Ideal for home electric water heaters, solar water storage tanks, and gas water heaters. It protects household hot water equipment from corrosion caused by long-term use, ensuring safe and clean hot water for daily bathing, cooking, and cleaning.
Suitable for commercial facilities such as hotels, hospitals, and office buildings, as well as small industrial hot water storage tanks. These high-usage scenarios demand durable corrosion protection to minimize maintenance downtime and replacement costs.
Regions with hard water, high mineral content, or acidic water face increased corrosion and scale risks. The sacrificial magnesium anode is particularly effective in these environments, requiring more frequent replacement (every 3 months) to maintain optimal protection.
Prolonged Tank Lifespan: By preventing inner tank corrosion and enamel damage, the magnesium anode extends the service life of hot water storage tanks by 30-50%, reducing the need for costly replacements.
Energy Efficiency Improvement: Reduced scale buildup on heating tubes maintains heat transfer efficiency, lowering energy consumption by up to 15% compared to unprotected tanks.
Enhanced Water Quality: Eliminates rust and metal particle contamination caused by tank corrosion, ensuring hot water is clean and safe for daily use.
Easy Installation & Replacement: Standardized sizes fit most tanks, and replacement requires no specialized tools—saving time and maintenance costs.
Reliable Performance: Solaraven’s high-purity magnesium material ensures consistent reactivity and long-lasting protection, outperforming low-quality alternatives.
Don’t let corrosion and scale damage your hot water storage tank or waste energy! Choose the Solaraven Magnesium Anode for Hot Water Storage Tank to secure reliable protection and long-term efficiency. With 100 pcs in stock, we offer fast delivery to meet your urgent needs. Whether you’re a homeowner, property manager, or industrial buyer, our team can help you select the right size for your equipment. Inquire now for a customized quote, or click Add to Basket to place your order immediately. For technical support or replacement advice, contact our experts today—invest in protection that pays off!
The Magnesium Anode for Hot Water Storage Tank (also known as a magnesium rod) is a core protective component engineered by Solaraven to safeguard hot water storage tanks from corrosion and performance degradation. Based on the sacrificial anode protection principle, this high-purity magnesium product prioritizes chemical reactions over the tank’s inner metal, forming a protective barrier that extends equipment lifespan. Available in multiple standardized sizes, it fits most residential and commercial hot water storage tanks, addressing issues like scale buildup, energy waste, and water quality deterioration. Whether for solar water heaters, electric water tanks, or industrial hot water systems, this magnesium anode delivers reliable corrosion protection to keep your equipment running efficiently.

Magnesium exhibits higher reactivity than the inner tank metal (such as steel or enamel-coated steel). When installed, the magnesium rod reacts preferentially with calcium, magnesium ions, and other corrosive substances in water, forming a stable polarized film on the tank’s inner surface. This process diverts corrosion away from the tank itself, preventing rust, leaks, and irreversible damage—ensuring the inner tank remains intact for years.
In hard water areas, scale buildup on heating tubes is a major cause of reduced heat transfer efficiency and increased energy consumption. The hot water storage tank magnesium anode mitigates scale formation through targeted chemical reactions, minimizing mineral deposits on heating elements. This not only maintains optimal heat transfer but also lowers energy costs by reducing the workload of the heating system.
For enamel-lined hot water tanks, accidental damage to the enamel coating can expose the underlying metal to corrosion. The magnesium anode activates an automatic protective mechanism when such damage occurs: it generates a low-level output current that repairs minor cracks in the enamel liner, providing dual protection against both external corrosion and coating damage. This proactive safeguard prevents sudden tank failures and extends the overall service life of the equipment.
Parameter | Details |
Model | DN20 |
Brand | Solaraven |
Code | 8419901000 |
Sizes (Diameter × Length) | 3/4inch × 200mm, 3/4inch × 300mm, 3/4inch × 500mm, 1inch × 200mm, 1inch × 300mm, 1inch × 500mm, 1.25inch × 300mm, 1.25inch × 500mm, 1.5inch × 500mm, 2inch × 500mm |
Material | High-purity magnesium |
Recommended Replacement Cycle | 1 year (3 months for areas with poor water quality) |
In-Stock Quantity | 100 pcs |
Ideal for home electric water heaters, solar water storage tanks, and gas water heaters. It protects household hot water equipment from corrosion caused by long-term use, ensuring safe and clean hot water for daily bathing, cooking, and cleaning.
Suitable for commercial facilities such as hotels, hospitals, and office buildings, as well as small industrial hot water storage tanks. These high-usage scenarios demand durable corrosion protection to minimize maintenance downtime and replacement costs.
Regions with hard water, high mineral content, or acidic water face increased corrosion and scale risks. The sacrificial magnesium anode is particularly effective in these environments, requiring more frequent replacement (every 3 months) to maintain optimal protection.
Prolonged Tank Lifespan: By preventing inner tank corrosion and enamel damage, the magnesium anode extends the service life of hot water storage tanks by 30-50%, reducing the need for costly replacements.
Energy Efficiency Improvement: Reduced scale buildup on heating tubes maintains heat transfer efficiency, lowering energy consumption by up to 15% compared to unprotected tanks.
Enhanced Water Quality: Eliminates rust and metal particle contamination caused by tank corrosion, ensuring hot water is clean and safe for daily use.
Easy Installation & Replacement: Standardized sizes fit most tanks, and replacement requires no specialized tools—saving time and maintenance costs.
Reliable Performance: Solaraven’s high-purity magnesium material ensures consistent reactivity and long-lasting protection, outperforming low-quality alternatives.
Don’t let corrosion and scale damage your hot water storage tank or waste energy! Choose the Solaraven Magnesium Anode for Hot Water Storage Tank to secure reliable protection and long-term efficiency. With 100 pcs in stock, we offer fast delivery to meet your urgent needs. Whether you’re a homeowner, property manager, or industrial buyer, our team can help you select the right size for your equipment. Inquire now for a customized quote, or click Add to Basket to place your order immediately. For technical support or replacement advice, contact our experts today—invest in protection that pays off!