Flexible Magnesium Water Heater Anode Rod

One of the most commonly found factors limiting the life of water heaters is interior corrosion. The water inside the heater tank can be very harmful to the system as the harsh minerals it contains can build up and eat away at the steel surfaces, a process which is only worsened by the high water temperatures.

Anode rods are the most important factor in preventing corrosion and leaks in water heaters. The anode rod deposits electrons into the water that help to create an environment in which the corrosive action is diverted away from the tank walls to the anode rod. Thus, prolonging the service life of the inner tank and the heating pipes.

Attached with carbon steel wire or 301 stainless steel braided wire, this four-sectional flexible magnesium anode rod is designed for narrow spaces where a rigid straight anode rod is unable to be inserted into the water heater. It is best for tight situations caused by limited direct access, such as low ceilings, closets, attics, under stairwells or in basements. This linked-style magnesium anode rod is typically used in replacement applications.

As an essential element in all living things, magnesium is eco-friendly. Compared to other material types, magnesium anode rod provides a healthier alternative. The magnesium will dissolve into water, leaving sediment at the bottom of the water heater tank over time.




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Quality Substrate Material
Our high grade flexible magnesium anode rod is produced to meet American standard ASTM B843-AZ31B.

Element ASTM B843 – AZ31B
Aluminum (Al) 2.5 ~ 3.5%
Zinc (Zn) 0.6 ~ 1.4%
Manganese (Mn) 0.2 ~ 1.0%
Silicon (Si) 0.1% Max
Iron (Fe) 0.005% Max
Copper (Cu) 0.01% Max
Cadmium (Cd) 0.04% Max
Nickel (Ni) 0.001% Max
Total Impurities 0.3% Max
Magnesium (Mg) Remainder

Segmented Design
Compared with a cast magnesium rod, this extruded magnesium rod has better machining accuracy. The 45 inch long rod is hinged into four sections, allowing for easier installation in cases with limited access. The product can be safely cut to fit the water heater as required.

Uniform Current Distribution
Each magnesium anode rod has a steel core running lengthwise through its center, providing a uniform and efficient current distribution to ensure stable performance.

Easy Replacement
The anode rod is easily replaceable and should be checked each time the water heater tank is drained. Generally, anode rods should be replaced when the corrosion has consumed approximately 75% of the rod’s mass. Our anode rod is expected to provide about two years of corrosion protection.

Strict Quality Control
By conforming to ISO 9001:2015 standards, our flexible magnesium anode rods are manufactured, inspected, and tested in accordance with our stringent quality control procedures to ensure peak performance.

Customized Configurations
This flexible magnesium anode rod is compatible with Rheem, BWC, AO, STATE and any solar or electric water heater with a standard ¾” NPT thread. Custom-made segments, length and thread are available upon request.

Main Technical Parameters






0.8" (21.3 mm)

Core Wire Diameter

3.4 mm


45" (1150 mm)




Fresh Water


Water Heater

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