Whale Water Systems 74556 Magnesium Anode Rod 3/4" NPT

The Whale Water Systems 74556 is a replacement magnesium anode rod designed to extend the service life of marine and RV water heaters. This sacrificial anode protects the water heater tank from corrosion by attracting corrosive elements in the water, preventing them from attacking the steel tank walls.

Key Specifications:

• Anode length: 4 inches
• Thread size: 3/4 inch NPT (National Pipe Thread)
• Material: Magnesium alloy
• Application: Marine and RV water heater tanks

Features & Benefits:

• Sacrificial protection prevents costly tank corrosion and extends heater life
• Magnesium composition provides excellent protection in softer water conditions
• Standard 3/4" NPT threads ensure compatibility with most water heater installations
• Compact 4-inch length fits tight marine and RV installations
• Easy to inspect and replace as part of routine maintenance

Regular inspection and replacement of the anode rod is essential preventive maintenance for water heaters. Replace the anode when it has deteriorated to less than half its original diameter or when the core wire is exposed.