Also known as sacrificial anodes, these rods and pads protect tanks, water heaters, and heat exchangers from rusting by attracting corrosion that would otherwise damage equipment.

Rods have a steel core covered with zinc or magnesium. They have a threaded pipe connection.

Zinc rods protect against corrosion and scaling in salt water and fresh water.

Magnesium rods protect against corrosion in fresh water.