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The MUELLER STREAMLINE E079300 is a 808-series DWV (drain, waste, and vent) elbow fitting designed for residential and light commercial plumbing drain systems. Cast in bronze, this fitting connects two copper pipes using a cup-by-cup (C x C) sweat connection at a 1-1/2 inch nominal size. It directs flow at the standard elbow angle used in DWV applications, making it a reliable choice for drain line routing in walls, floors, and ceilings. Licensed plumbers and pipefitters install this fitting as part of gravity-drain assemblies where copper is the specified material.
This elbow is suited for residential and light commercial DWV piping systems where copper fittings are required. The 1-1/2 inch nominal size is a common dimension in lavatory drain lines, bathtub drains, and branch drain connections. Its domestic manufacture supports projects that require domestically sourced materials. The C x C end style accommodates standard copper tubing sweat-soldered on both ends.
Designed as an OEM-style replacement or new-installation fitting for 1-1/2 inch nominal copper DWV piping systems using sweat-soldered C x C connections.
Installation is performed by a licensed plumber following applicable IPC or local plumbing code requirements. Shut off the water supply and drain the line before cutting into any existing pipe. Both cup ends must be cleaned, fluxed, and soldered using lead-free solder per code requirements for potable and drain system copper fittings. Do not use this fitting in pressure supply lines; it is rated for DWV service only.
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