Quality Substrate Material
Constructed of high-grade magnesium, our pencil anode rod is manufactured according to ASTM B843-AZ31B standard. The magnesium alloy contains Al, Zn and Mn elements, while the content of Ni, Fe and Cu must be kept as low as possible.
|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|
High Current Output
This extruded magnesium anode rod has high surface and length ratios in relation to cross-sectional area, this allows a greater current per weight than typical cast anodes. By supplying stronger current, our magnesium pencil anode rod can deliver effective protection to water heaters, even in higher resistivity electrolytes.
Uniform Current Distribution
With a thin steel core running the entire length of the anode as a support, the magnesium pencil anode rod provides a uniform and efficient current distribution to ensure stable performance.
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 pencil anode rod is expected to provide up to two years of corrosion protection.
Strict Quality Control
By conforming to ISO 9001:2015 standards, our magnesium anode rods are manufactured, inspected, and tested in accordance with our stringent quality control procedures to ensure peak performance.
Standard sizes below are available at Jennings Anodes warehouse. Other sizes are available upon request.
|Item No.||Rod Diameter||Rod Diameter||NPT|
|JA-WHR-M12||Ø0.5″ (Ø12.7 mm)||Ø0.13″ (Ø3.4 mm)||1/2”|
|JA-WHR-M17||Ø0.67″ (Ø17 mm)||Ø0.13″ (Ø3.4 mm)||3/4”|
|JA-WHR-M21||Ø0.84″ (Ø21.3 mm)||Ø0.13″ (Ø3.4 mm)||3/4”|
|JA-WHR-M22||Ø0.9″ (Ø22.9 mm)||Ø0.13″ (Ø3.4 mm)||3/4”|