Mueller Industries 2878 Abs Dwv 90 Degree Elbow 3 in

Product Description

The MUELLER INDUSTRIES 2878 is a 3-inch ABS DWV 90-degree elbow fitting designed for non-pressurized sanitary drain-waste-vent systems. Constructed from impact-resistant Acrylonitrile Butadiene Styrene (ABS), this fitting redirects piping flow at a 90-degree angle while maintaining consistent slope and alignment in DWV layouts. At 6.63 inches in length and height and 4 inches in width, it is sized for standard residential and light commercial plumbing rough-in work. The plastic-to-plastic end style makes it compatible with solvent-cement joining methods standard to ABS piping installations.

This elbow is suited for use in residential and light commercial drain-waste-vent systems where a 90-degree directional change is required. Common installation scenarios include branch lines off main stacks, under-slab horizontal runs, and above-grade vent configurations. Its lightweight ABS construction makes it practical for both new construction rough-in and retrofit applications where replacing or extending existing ABS DWV piping networks.

Key Features

• 90-degree elbow geometry for precise directional changes in DWV piping runs
• Manufactured from impact-resistant ABS material suitable for non-pressurized drain and vent service
• 3-inch nominal size on both Side A and Side B for straight, same-size connections
• Plastic-to-plastic end style designed for solvent-cement joining in standard ABS systems
• Lightweight construction supports ease of handling and installation in tight rough-in spaces

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 3-inch ABS DWV piping systems in residential and light commercial sanitary drain, waste, and vent applications.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable plumbing codes, including the IPC or locally adopted code. Ensure all existing flow is stopped and the line is clear before cutting into an active DWV system. ABS fittings require ABS-rated solvent cement and primer where required by code — allow full cure time before restoring flow. Do not use this fitting in pressurized water supply lines.

Technical Specifications

• Material: ABS DWV
• Angle: 90 degrees
• Nominal Size (Side A): 3 inches
• Nominal Size (Side B): 3 inches
• End Style: Plastic x Plastic
• Length: 6.63 inches
• Width: 4 inches
• Height: 6.63 inches
• Weight: 0.76 pounds
• Fitting Type: Elbow

Standard Information

• Brand: MUELLER INDUSTRIES
• Manufacturer Part Number: 2878