This magnesium anode rod is designed for older Atwood aluminum-tank water heaters.

To install, simply replace your 1/2" pipe thread drain plug with this rod.

Unlike most anode rods, this model has an innovative internal drain valve, allowing you to continue to drain your water heater without tools and sealer.

Note: If you buy a new Atwood water heater from us, you do not need an anode rod.


WATER HEATER TANK CORROSION
Pinhole leaks from galvanic corrosion may cause the water heater tank to fail. Microscopic particles of metals (like iron and copper) suspended in water, set up a reaction inside the water heater that is not unlike the principle on which an automotive battery operates. The aluminum tank is the anode and the metals in the water serve as the cathode. Consequently, the aluminum gradually sacrifices itself and aluminum particles are carried
away with the water flow.

A white scaly material (aluminum oxide) often is formed around the points where the heaviest action is taking place and heat accelerates the process. Severity of the problem varies considerably in different locales depending on the metal and mineral content of the water. White deposits inside the water heater tank are usually from water impurities that have settled out.

Periodic flushing of the water heater tank under pressure is recommended to slow down this process. For flushing instructions see your owners manual.