Mueller Streamline ABSCLORING43 Abs Dwv Closet Flange Hub

Product Description

The MUELLER STREAMLINE ABSCLORING43 is a reducing closet flange hub made from ABS plastic for use in DWV (drain, waste, and vent) systems. It connects a 4-inch closet flange to a 3-inch drain line, providing the necessary transition at the base of a toilet installation. Licensed plumbers install this fitting during new construction and remodel work where the floor drain stub-out does not match the full 4-inch flange diameter. The ABS material is lightweight, chemically resistant, and compatible with standard ABS solvent-cement joining methods.

This reducing closet flange hub is used in residential and light commercial plumbing applications. It is suited for installations where an existing 3-inch ABS DWV drain line needs to support a standard toilet flange connection. The fitting is typically set into or mounted over the floor, allowing the toilet horn to seat and seal properly. Plumbers use it in slab-on-grade and wood-frame floor assemblies where reducing the drain outlet size is required.

Key Features

• Reduces from 4-inch flange to 3-inch hub connection for flexible drain line sizing
• ABS plastic construction — lightweight and resistant to common drain chemicals
• Hub-style inlet accepts standard 3-inch ABS pipe with solvent cement
• Designed for DWV systems — not rated for pressure applications
• Compatible with standard ABS solvent-cement installation methods

Compatibility

Designed as an OEM-style replacement or new-installation fitting for residential and light commercial ABS DWV drain systems requiring a 4-inch x 3-inch reducing closet flange connection.

Installation Notes

Installation must be performed by a licensed plumber in accordance with local plumbing codes and the IPC or applicable state code. Turn off the water supply and ensure the drain line is clear before fitting. Use only ABS-rated solvent cement and primer when joining to ABS pipe. Do not use this fitting on pressurized water supply lines.

Technical Specifications

• Flange Diameter: 4 inches
• Inlet Hub Size: 3 inches
• Material: ABS Plastic
• System Type: DWV (Drain, Waste, Vent)
• Connection Type: Hub (solvent weld)

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: ABSCLORING43