Copperfit 1A1881 Abs Dwv Long Turn Combo Tee 4x3 in

Product Description

The COPPERFIT 1A1881 is a 4 x 3 inch ABS DWV long turn combination tee, also known as a combo tee, designed for drain, waste, and vent piping systems. This fitting connects a 4-inch main line to a 3-inch branch line with a long-radius sweep that promotes smooth, consistent drainage flow and reduces the chance of solids buildup at the junction. It is manufactured from ABS (acrylonitrile butadiene styrene) thermoplastic, which resists corrosion and is compatible with standard ABS solvent-cement joining methods. Plumbers and pipefitters install this fitting in residential and light commercial DWV rough-in work.

The 1A1881 combo tee is suited for horizontal-to-vertical drain transitions in sanitary drainage systems. The long-turn configuration meets code requirements in jurisdictions that prohibit short-turn fittings on horizontal drain runs. It is commonly used when a branch drain line must be introduced into a larger main stack or horizontal drain line while maintaining proper slope and flow direction. The fitting conforms to DWV service requirements and is installed in new construction and remodel applications.

Key Features

• 4-inch main line by 3-inch branch outlet sizing for common stack and branch combinations
• Long-turn sweep geometry supports smooth drainage flow and reduces clog risk
• ABS construction resists corrosion and chemical degradation in drain service
• Solvent-cement socket ends for fast, reliable field joining
• Combination tee design allows simultaneous horizontal and vertical connections in a single fitting

Compatibility

Designed as an OEM-style replacement and new-installation fitting for 4-inch by 3-inch ABS DWV piping systems in residential and light commercial drain, waste, and vent applications.

Installation Notes

Installation should be performed by a licensed plumber in accordance with the applicable plumbing code, such as the IPC or UPC. Clean and deburr pipe ends before applying ABS solvent cement, and allow full cure time before pressure-testing the system. Confirm proper pipe slope on horizontal runs per code requirements before securing the fitting. Shut off all water supply and ensure the drain system is clear before beginning any work on an existing line.

Technical Specifications

• Main Line Size: 4 inches
• Branch Outlet Size: 3 inches
• Fitting Type: Long Turn Combination Tee (Combo)
• Material: ABS
• Application: DWV (Drain, Waste, Vent)
• Weight: 2.18 pounds
• UPC: 812042010783

Standard Information

• Brand: COPPERFIT
• Manufacturer Part Number: 1A1881