A.o. Smith 100109223 Magnesium Anode Rod 44in 3/4in Npt

Product Description

The A.O. SMITH 100109223 is a magnesium anode rod designed to protect the steel tank lining of residential and light-commercial water heaters from corrosion. The rod measures 44 inches in length with a 0.84-inch diameter and installs via a 3/4-inch NPT threaded connection. Magnesium anode rods are the standard sacrificial-anode material in most domestic water heater applications, releasing ions that preferentially corrode in place of the tank wall. Licensed plumbers and water heater service technicians install and replace these rods as part of routine water heater maintenance.

This anode rod is suited for residential water heater tanks that accept a 3/4-inch NPT anode port. It is a common replacement item in standard tank-style water heaters where the existing sacrificial rod has been depleted through normal service life. Replacing a spent anode rod extends tank life and is a recommended maintenance step in hard-water service areas where anode depletion accelerates.

Key Features

• Magnesium construction provides effective sacrificial-anode corrosion protection for steel water heater tanks
• 44-inch length accommodates full-size residential water heater tanks
• 0.84-inch diameter rod fits standard anode port openings
• 3/4-inch NPT threaded connection for direct drop-in installation
• OEM-style replacement suitable for routine water heater maintenance service

Compatibility

Designed as an OEM-style replacement anode rod for tank-style water heaters equipped with a 3/4-inch NPT anode port accepting a 44-inch rod.

Installation Notes

Anode rod replacement is performed by a licensed plumber or qualified water heater technician. Before service, shut off the cold-water supply and disconnect or power down the water heater per local code requirements. A 1-1/16-inch socket and torque-appropriate breaker bar are typically required to remove and seat the rod; follow the water heater manufacturer's service instructions for proper torque and thread sealant guidance. Work must comply with applicable local plumbing codes and the International Plumbing Code (IPC) where adopted.

Technical Specifications

• Product Type: Anode Rod
• Material: Magnesium
• Length: 44 inches
• Diameter: 0.84 inches
• Connection Size: 3/4 inches
• Connection Type: Threaded (NPT)

Standard Information

• Brand: A.O. SMITH
• Manufacturer Part Number: 100109223