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The MUELLER STREAMLINE ABSYSPHH112 is a 1-1/2 inch ABS DWV 45 degree street wye fitting used in drain, waste, and vent piping systems. It features a spigot inlet and two hub outlets, allowing a branch connection to be made at a 45 degree angle off the main drain line. The spigot end inserts directly into a hub of the same size, eliminating the need for an additional coupling. Licensed plumbers and pipefitters install this fitting in residential and light commercial DWV applications where solvent-weld ABS connections are required by local code.
This fitting is suited for residential drain, waste, and vent systems where a 45 degree branch takeoff is needed on a 1-1/2 inch ABS line. Common install locations include under-sink drain assemblies, branch drain lines serving lavatories, laundry standpipes, and similar low-slope DWV configurations. The street configuration makes it a practical choice when working in tight spaces or when reworking an existing section of ABS pipe without adding extra fittings to the run.
Designed as an OEM-style replacement or new-installation fitting for 1-1/2 inch ABS DWV piping systems using solvent-weld connections.
Installation should be performed by a licensed plumber in accordance with the applicable plumbing code, such as the IPC or UPC, and local AHJ requirements. Shut off water flow and verify the drain line is clear before cutting into an existing system. Clean and dry all mating surfaces, apply ABS solvent cement to both the spigot end and the receiving hub, and assemble with a slight twisting motion per the cement manufacturer's instructions. Do not apply flame or mechanical stress to solvent-welded ABS joints during or after cure.
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