Uponor LF4701775 Reducing Tee Propex Brass 1x3/4x3/4

Product Description

The UPONOR LF4701775 is a lead-free brass reducing tee fitting designed for ProPEX expansion-style PEX tubing systems. It connects a 1-inch run to 3/4-inch branch and outlet lines, making it a standard transition point in residential and light commercial plumbing distribution. The ProPEX end style requires an expansion ring and ProPEX tool to create a watertight mechanical connection. Licensed plumbers and PEX installation specialists are the primary installers of this fitting. Its lead-free brass construction meets potable water requirements, making it suitable for domestic hot and cold water supply applications.

This reducing tee is used in PEX-based plumbing systems where a main supply line must branch off at a reduced diameter. Typical applications include residential water distribution manifolds, multi-family plumbing rough-ins, and hydronic systems requiring branch takeoffs. The 1-inch inlet accommodates main trunk lines while the 3/4-inch outlets serve branch circuits or individual fixture runs. This fitting is commonly installed in new construction and remodel work where ProPEX system components are specified throughout.

Key Features

• Lead-free brass construction compliant with potable water standards
• ProPEX expansion end style for a reliable, tool-expanded mechanical connection
• Reducing configuration: 1 inch run by 3/4 inch by 3/4 inch nominal sizing
• Suitable for hot and cold domestic water supply applications
• Compact tee geometry designed for tight rough-in spaces

Compatibility

Designed as an OEM-style replacement and new-installation fitting for ProPEX expansion-style PEX plumbing systems requiring a 1 x 3/4 x 3/4 inch reducing tee configuration.

Installation Notes

Installation requires a calibrated ProPEX expansion tool and the correct size expansion rings for each connection port. Shut off the water supply and depressurize the line before cutting into existing piping. This fitting must be installed by a licensed plumber in jurisdictions that require permits for plumbing rough-in work. Follow local plumbing codes, including applicable IPC provisions, for PEX system installation requirements.

Technical Specifications

• Nominal Size: 1 x 3/4 x 3/4 inches
• End Style: ProPEX
• Material: Lead-Free Brass

Standard Information

• Brand: UPONOR
• Manufacturer Part Number: LF4701775