Ao Smith 100270743 Dip Tube Kit 0.65x40.5 in 3/4 Npt

Product Description

The AO SMITH 100270743 is a dip tube replacement kit designed for use in residential and light commercial water heaters. The dip tube directs incoming cold water to the bottom of the tank, keeping it separated from the hot water at the top and maintaining efficient heat transfer throughout the unit. This kit measures 0.65 inches in diameter and 40.5 inches in length, with a 3/4 inches NPT connection and a pack quantity of 5. It is installed by licensed plumbers or water heater service technicians during routine maintenance or when a failed dip tube causes complaints of lukewarm water or sediment discharge.

This dip tube kit is suited for water heater applications where the original tube has cracked, broken, or degraded over time. A failing dip tube is a common cause of reduced hot water output in tank-style water heaters. The 40.5 inches length is appropriate for standard tall-configuration residential tank units. The 3/4 inches NPT fitting provides a direct, threaded connection to the cold water inlet port of the heater. The pack of 5 makes this kit practical for service companies stocking replacement parts for multiple installs.

Key Features

• 0.65 inches diameter x 40.5 inches length for tall-tank fitment
• 3/4 inches NPT threaded connection for standard cold water inlet ports
• Pack of 5 tubes per kit, suitable for service inventory
• Directs cold inlet water to tank bottom to preserve hot water stratification
• OEM-style replacement for restoring proper water heater performance

Compatibility

Designed as an OEM-style replacement dip tube kit for compatible AO SMITH tank-style water heaters with a 3/4 inches NPT cold water inlet. Verify tank depth and inlet port size against part specifications before installation.

Installation Notes

Dip tube replacement is performed by a licensed plumber or qualified water heater technician. Before beginning, shut off the cold water supply and disconnect electrical power or gas supply to the heater per local code requirements. The old dip tube is removed through the cold water inlet port after draining the necessary water level. Do not overtighten the NPT connection; use thread sealant tape rated for potable water systems and follow applicable IPC guidelines.

Technical Specifications

• Diameter: 0.65 inches
• Length: 40.5 inches
• Connection Type: 3/4 inches NPT
• Quantity per Kit: 5

Standard Information

• Brand: AO SMITH
• Manufacturer Part Number: 100270743