Mueller Systems 017790 333 Adapter Tee 1 X 3/4 Inch

Product Description

The MUELLER SYSTEMS 017790 333 is an adapter tee fitting designed to connect and transition between two different pipe sizes within a plumbing or fluid distribution system. With a 1-inch by 3/4-inch nominal configuration, this tee allows a main run to reduce or adapt at the branch outlet without the need for additional reducers. It is a standard installation component used by licensed plumbers and pipefitters working on residential and light commercial water distribution systems.

This adapter tee is suited for use in potable water supply lines, hydronic distribution piping, and general fluid handling systems where a size transition is required at a tee junction. The 1 x 3/4 inch nominal sizing makes it a common choice in branch line configurations where the main line is larger than the branch outlet. It is typically installed during rough-in plumbing on new construction or during retrofit and repair work on existing systems.

Key Features

• Adapter tee design combines tee function and size transition in a single fitting
• 1-inch by 3/4-inch nominal sizing for direct main-to-branch size reduction
• Eliminates the need for a separate reducing bushing or coupling at the branch
• Designed for use in standard plumbing distribution piping applications

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 1-inch by 3/4-inch nominal plumbing systems in residential and light commercial applications.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and the IPC. Shut off the water supply and depressurize the line before cutting into existing piping. Ensure all mating pipe ends are clean, deburred, and properly prepared before joining. Use joining methods and sealants appropriate to the pipe material and local code requirements.