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The MUELLER STREAMLINE DWVCOMBY2 is a 2-inch cast copper DWV long turn tee-wye fitting designed for drain, waste, and vent piping systems. It features a C x C x C (copper sweat) connection pattern, allowing all three ports to be soldered directly to copper pipe. The long-turn sweep reduces flow turbulence compared to short-turn fittings, supporting proper drainage velocity and minimizing blockage risk. Licensed plumbers install this fitting in residential and light commercial DWV rough-in work where smooth directional flow and reliable solder joints are required.
This fitting is suited for horizontal and vertical DWV applications in residential plumbing systems, including branch drain lines, waste stacks, and vent tie-ins. The long turn geometry meets common code requirements for drain fittings used in the direction of flow. It is appropriate for use in concealed rough-in locations within walls, floors, and ceiling assemblies where cast copper durability is specified.
Designed as an OEM-style replacement or new-installation fitting for 2-inch copper DWV piping systems using sweat-solder connections.
Installation should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and ensure the pipe is fully drained and dry before soldering. All mating pipe ends must be cleaned, deburred, and fluxed prior to assembly to achieve a leak-free solder joint. Orient the fitting in the direction of flow as required by applicable DWV code provisions.
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