Nibco I446150 Dwv 90 Deg Low Heel Inlet Elbow Abs

Product Description

The NIBCO I446150 is an ABS drain, waste, and vent (DWV) 90-degree elbow with a low heel inlet, designed for gravity-flow drainage and venting applications in residential and light commercial plumbing systems. Constructed from acrylonitrile butadiene styrene (ABS), this fitting connects 4-inch main-run pipe to a 2-inch branch line at the heel of the elbow through a hub x hub x hub end-connection configuration. It handles system temperatures from -40 degrees F to 180 degrees F, making it well-suited for indoor DWV rough-in work. Licensed plumbers install this fitting during new construction or remodel drain-line rough-in to route waste flow and integrate low-demand branch vents or secondary drain lines.

This fitting is used in residential and light commercial DWV systems where a 90-degree change in direction is needed along a 4-inch main drain line with a 2-inch branch connection at the heel. Typical applications include floor-drain tie-ins, secondary fixture branch connections, and vent tie-ins where the low heel inlet geometry fits within framing constraints. The hub end connections accept standard ABS pipe with solvent cement, consistent with common rough-in practice under the International Plumbing Code (IPC) and local adopted codes.

Key Features

• 90-degree elbow geometry with low heel inlet allows branch tie-in within tight framing bays
• 4 x 4 x 2 inch sizing accommodates a 4-inch main run with a 2-inch branch at the heel
• Hub x hub x hub end connections for solvent-cement installation with standard ABS pipe
• ABS construction resists corrosion and chemical attack typical of DWV service
• Rated from -40 degrees F to 180 degrees F for standard indoor DWV temperature ranges
• Manufactured under ISO 9001:2008 quality management standards

Compatibility

Designed as an OEM-style DWV fitting for use with standard-dimension ABS drain, waste, and vent pipe in hub-connection systems. Confirm local code acceptance of ABS material before installation.

Installation Notes

Installation is performed by licensed plumbers following applicable IPC or locally adopted plumbing code requirements. Shut off the water supply and ensure the drain line is empty and dry before cutting into an existing system. Clean and prime pipe ends per the solvent-cement manufacturer instructions before applying cement to hub connections. Do not use this fitting on pressurized supply lines; it is rated for gravity-flow DWV service only.