Mueller Streamline DWVCOMBY112 Dwv Tee-wye 1.5in Cast

Product Description

The MUELLER STREAMLINE DWVCOMBY112 is a 1.5-inch cast copper DWV long turn tee-wye fitting designed for drain, waste, and vent piping systems. The long-turn geometry reduces flow restriction compared to standard tees, helping maintain proper drainage velocity in horizontal and vertical runs. All three connections are copper sweat (C x C x C), making it compatible with standard copper DWV pipe joined by soldering. Licensed plumbers and pipefitters install this fitting during rough-in of residential and light commercial drain systems.

This fitting is used in gravity-fed DWV applications where a branch takeoff is required along a main drain or vent stack. The long-turn radius is particularly well suited for horizontal drain lines where maintaining flow momentum matters. It is appropriate for residential bath, kitchen, and utility drain rough-in as well as light commercial applications that use copper DWV pipe at the 1.5-inch nominal size. Cast copper construction provides consistent wall thickness and durability at solder joints.

Key Features

• Long-turn tee-wye geometry reduces turbulence and maintains drainage flow velocity
• All-copper sweat connections (C x C x C) for standard soldered joints
• Cast copper construction for consistent wall thickness and reliable solder bonding
• 1.5-inch nominal size suits common lavatory, kitchen sink, and utility drain lines
• Suitable for both horizontal drain and vent stack branch applications

Compatibility

Designed as an OEM-style replacement and new-installation fitting for 1.5-inch copper DWV piping systems using soldered sweat connections.

Installation Notes

Installation should be performed by a licensed plumber in accordance with the applicable plumbing code, such as the IPC or local adopted equivalent. Shut off water supply and ensure the line is drained and dry before cutting in the fitting. Clean and flux all mating surfaces thoroughly before soldering to achieve a watertight joint. Do not apply flame directly to the fitting socket after solder has been introduced, as overheating can cause voids in the joint.

Technical Specifications

• Nominal Size: 1.5 inches
• Connection Type: C x C x C (Sweat)
• Material: Cast Copper
• Fitting Pattern: Long Turn Tee-Wye
• Application: DWV (Drain, Waste, Vent)

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: DWVCOMBY112