Nibco I030600 Dwv Adapter 1-1/2 X 1-1/4 Inch Hub X Mipt

Product Description

The NIBCO I030600 is an ABS drain, waste, and vent (DWV) adapter fitting used to transition between a 1-1/2 inch hub connection and a 1-1/4 inch male iron pipe thread (MIPT) connection. Molded from acrylonitrile butadiene styrene (ABS), this adapter handles the temperature range from -40 degrees F to 180 degrees F, making it well-suited for typical residential DWV applications. Plumbers install this fitting when connecting drain lines that change in nominal size or end connection type within a DWV system. It is a single-piece unit sold with a minimum order quantity of five.

This adapter is used in residential and light commercial drain, waste, and vent piping systems. It is appropriate for installations where a hub-end ABS pipe meets a male-threaded fitting or fixture drain at a different nominal diameter. Typical scenarios include trap arm connections, lavatory drain assemblies, and branch line transitions where the pipe size steps down from 1-1/2 inch to 1-1/4 inch. The MIPT end accepts a standard NPT female-threaded fitting or trap component.

Key Features

• ABS construction rated for service from -40 degrees F to 180 degrees F
• Hub x MIPT end connections accommodate solvent-cement and threaded assembly in a single fitting
• 1-1/2 inch hub inlet to 1-1/4 inch MIPT outlet for common DWV size transitions
• Manufactured under ISO 9001:2008 quality management standards
• Lightweight at 0.06 pounds for easy handling in tight drain cavities

Compatibility

Designed as an OEM-style replacement or new-installation fitting for residential and light commercial ABS DWV piping systems requiring a 1-1/2 inch hub to 1-1/4 inch MIPT transition.

Installation Notes

Installation is performed by a licensed plumber following local plumbing codes and IPC requirements for DWV systems. Shut off water supply and ensure the drain line is clear of flow before beginning work. The hub end is joined with approved ABS solvent cement — clean and prime surfaces per the cement manufacturer's instructions before applying cement. The MIPT end should be assembled with an appropriate thread sealant rated for drain service; do not over-torque threaded connections on plastic fittings.