A.o. Smith 100109784 Dip Tube 1 Inch Npt 31.44 Inch

Product Description

The A.O. SMITH 100109784 is a replacement dip tube designed for use in residential and light commercial water heaters. The dip tube directs incoming cold water to the bottom of the tank, keeping cold inlet water separated from the heated water at the top. This separation maintains efficient heat stratification and ensures consistent hot water delivery at the outlet. The 100109784 measures 1 inch NPT in connection size and 31.44 inches in length. Licensed plumbers and water heater service technicians handle this replacement as part of routine water heater maintenance or failure diagnosis.

Dip tubes are a common service item in tank-style water heaters. Over time, plastic dip tubes can deteriorate and break apart, leading to reduced hot water output, fluctuating water temperatures, or small plastic particles appearing at fixtures. The 100109784 is sized for water heater models that accept a 1 inch NPT inlet connection with a dip tube length of 31.44 inches, making it a direct OEM-style replacement for qualifying A.O. SMITH tank units.

Key Features

• 1 inch NPT connection size for direct installation at the cold water inlet port
• 31.44 inch length directs cold water delivery to the lower tank zone
• Maintains hot and cold water stratification for efficient tank performance
• OEM replacement part from A.O. SMITH for proper fit and function

Compatibility

Designed as an OEM replacement dip tube for A.O. SMITH tank-style water heaters that use a 1 inch NPT cold water inlet connection. Verify dip tube length and connection size against the existing unit before installation.

Installation Notes

Installation is performed by a licensed plumber or qualified water heater service technician. Before service, shut off the cold water supply and turn off power to the water heater at the breaker or set a gas unit to the pilot position. Relieve tank pressure before removing the inlet fitting. Thread sealant or plumber's tape rated for potable water use should be applied to the NPT threads during reassembly.

Technical Specifications

• Connection Size: 1 inch NPT
• Length: 31.44 inches
• Application: Replacement Part

Standard Information

• Brand: A.O. SMITH
• Manufacturer Part Number: 100109784