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The MUELLER STREAMLINE DWV45STLFTGC2 is a wrot copper 45-degree elbow fitting designed for drain, waste, and vent (DWV) piping systems. It connects two copper pipes in a cup-by-cup (C x C) configuration, allowing a smooth directional change of 45 degrees within a drainage run. Fabricated from wrot copper, this fitting delivers reliable joints when soldered according to standard plumbing practice. Plumbers and pipefitters install this fitting in residential and light commercial DWV applications where long-radius flow characteristics and copper durability are required. It accommodates 2-inch copper pipe on both ends.
This elbow is used in gravity-flow drainage piping within walls, ceilings, and chases where a 45-degree offset is needed to route waste lines around structural obstructions or to meet code-required drain pitch. It is appropriate for horizontal drain runs, vertical stack offsets, and vent piping connections in residential new construction and remodel work. The C x C end configuration requires solder-joint assembly on both ends using approved lead-free solder and flux per applicable plumbing codes.
Designed as an OEM-style replacement and new-installation fitting for 2-inch copper DWV piping systems using standard C x C solder-joint connections.
Installation should be performed by a licensed plumber in accordance with the applicable International Plumbing Code (IPC) or local adopted code. Shut off the water supply and drain all lines before cutting into an existing system. Clean and deburr pipe ends, apply approved lead-free flux, and solder joints using lead-free solder per ASTM and NSF requirements. Ensure proper drain slope is maintained per code before securing the fitting in place.
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