Copperfit 1A1557 Abs Dwv Bushing 4 X 3 Inches

Product Description

The COPPERFIT 1A1557 is an ABS DWV bushing designed to reduce a 4-inch drain, waste, and vent line down to a 3-inch connection. This fitting is used in gravity-flow drainage systems where a pipe size transition is required at a hub or spigot joint. Constructed from ABS (acrylonitrile butadiene styrene) thermoplastic, it delivers reliable chemical resistance and impact strength in below-grade and above-grade drain applications. Plumbers and pipefitters install this bushing wherever the drainage system requires a concentric reduction without adding additional fittings or offsets.

This bushing is suited for residential and light commercial drain, waste, and vent (DWV) piping systems. It is commonly installed at stack transitions, cleanout connections, or at fixture rough-in points where a 4-inch main must transition to a 3-inch branch or outlet. It is appropriate for use in interior above-slab, in-wall, and below-slab installations consistent with local plumbing codes governing ABS DWV systems.

Key Features

• 4-inch to 3-inch concentric reduction for DWV piping transitions
• ABS thermoplastic construction resists impact and common drain-line chemicals
• Compatible with standard ABS solvent-cement joining methods
• Lightweight fitting at 0.38 pounds reduces handling fatigue during rough-in
• Designed for gravity-flow drain, waste, and vent applications

Compatibility

Designed as an OEM-style replacement and new-installation fitting for ABS DWV piping systems requiring a 4-inch to 3-inch hub-to-spigot reduction.

Installation Notes

Installation should be performed by a licensed plumber in accordance with the International Plumbing Code (IPC) or applicable local code governing ABS DWV systems. Shut off any water supply and ensure the line is fully drained before cutting into an existing system. Clean and dry all mating surfaces before applying ABS solvent cement, and allow full cure time before pressurizing or flowing the line. Do not use PVC solvent cement on ABS fittings.

Technical Specifications

• Inlet Size: 4 inches
• Outlet Size: 3 inches
• Material: ABS (Acrylonitrile Butadiene Styrene)
• Application: DWV (Drain, Waste, Vent)
• Weight: 0.38 pounds
• UPC: 812042011155

Standard Information

• Brand: COPPERFIT
• Manufacturer Part Number: 1A1557