Mueller Streamline PDWVCOMBY442 Combo Tee-wye 4x4x2 Dwv

Product Description

The MUELLER STREAMLINE PDWVCOMBY442 is a long-radius combination tee-wye fitting designed for drain, waste, and vent (DWV) piping systems. It features a 4-inch by 4-inch by 2-inch configuration with hub-by-hub-by-hub connections, allowing a 2-inch branch line to tie into a 4-inch main line in a single fitting. The long-radius sweep promotes consistent drainage flow and reduces the chance of buildup at the transition point. Licensed plumbers install this fitting in residential and light commercial DWV rough-in work where a combination of directional change and branch takeoff is required in one unit.

This combination tee-wye is suited for gravity-flow drain and vent applications in residential and light commercial construction. It is commonly used in horizontal-to-horizontal or horizontal-to-vertical DWV runs where a branch connection is needed at the same point as a change in flow direction. The hub connections accept standard pipe ends and are joined with solvent cement following ASTM and local plumbing code procedures. Plumbers working on new construction or remodel rough-in will find this fitting useful where space and fitting count need to be kept to a minimum.

Key Features

• Long-radius sweep promotes steady drainage flow and reduces clog risk at the branch transition
• 4 in x 4 in x 2 in sizing handles a common DWV main-to-branch reduction in one fitting
• Hub-by-hub-by-hub connections accept standard pipe ends for solvent-cement joining
• Combination tee-wye geometry eliminates the need for two separate fittings at the same junction
• Designed for gravity-flow drain, waste, and vent applications

Compatibility

Designed as an OEM-style replacement or new-installation fitting for residential and light commercial DWV piping systems using 4-inch main lines with a 2-inch branch connection.

Installation Notes

Installation should be performed by a licensed plumber in accordance with the International Plumbing Code (IPC) and applicable local codes. Shut off the water supply and ensure the drain line is clear and dry before cutting into an existing system. Clean and prime all hub connections before applying solvent cement, and allow full cure time before restoring flow. Verify proper slope and support spacing per code before backfilling or closing the wall.

Technical Specifications

• Fitting Type: Long Radius Combination Tee-Wye
• Inlet Size: 4 inches
• Outlet Size: 4 inches
• Branch Size: 2 inches
• Connection Type: Hub x Hub x Hub
• Application: DWV (Drain, Waste, Vent)

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: PDWVCOMBY442