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The COPPERFIT 1A1669 is a 4-inch ABS DWV 45-degree elbow designed for drain, waste, and vent piping systems in residential and light commercial construction. This fitting redirects flow at a 45-degree angle, allowing plumbers to route drain lines around structural obstacles while maintaining proper slope for gravity drainage. Molded from ABS plastic, it delivers a lightweight, corrosion-resistant connection suited for above-grade and in-wall DWV applications. Licensed plumbers and journeymen install this type of fitting during rough-in on new construction and remodel projects.
This elbow is used in ABS DWV systems where a 45-degree change in direction is required on a 4-inch drain or vent line. Common applications include main drain runs, closet bends, and stack vent offsets in residential bathrooms, kitchens, and utility rooms. The 4-inch diameter makes it appropriate for toilet drain lines, main stack transitions, and similar large-bore drain applications where full-bore flow capacity is needed.
Designed as an OEM-style replacement and new-installation fitting for standard 4-inch ABS DWV drain, waste, and vent piping systems.
Installation should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Cut pipe ends square, deburr, and dry-fit before applying ABS solvent cement to both the pipe and socket. Ensure the fitting is oriented at the correct angle before the cement sets, as solvent-welded ABS joints cure quickly and cannot be repositioned. Verify all DWV runs maintain the required slope per code before closing rough-in.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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