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The MUELLER STREAMLINE DWV90L2 is a 2-inch, 90-degree elbow fitting designed for drain, waste, and vent (DWV) copper piping systems. It connects two sections of copper pipe using a cup-by-cup (CxC) joint configuration, allowing directional changes in horizontal and vertical drain runs. Licensed plumbers install this fitting during rough-in work on residential and light commercial plumbing systems. The CxC ends accept standard copper tubing and are soldered in place using lead-free solder per current code requirements. This elbow is a standard component in DWV assemblies where a 90-degree turn is required.
This fitting is used in drain, waste, and vent applications where copper piping is the specified or preferred material. Common installation scenarios include bathroom drain stacks, sink drain lines, and fixture branch connections in residential new construction and remodel projects. It is not rated for pressure service and is intended strictly for gravity-flow DWV piping.
Designed as an OEM-style replacement or new-installation fitting for 2-inch copper DWV piping systems using standard cup-end solder connections.
Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and the International Plumbing Code (IPC). Shut off water supply and ensure the pipe section is fully drained and dry before soldering. Clean pipe ends and fitting cups with emery cloth or a pipe cleaning brush, apply flux, and solder with lead-free solder meeting current NSF and code requirements. This fitting is not suitable for pressure or potable water supply lines.
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