Rehau 104831-001 Everloc+ Reducing Coupling 1x3/4 Inch Pexa

Product Description

The REHAU 104831-001 is a polymer compression-sleeve reducing coupling designed exclusively for use with REHAU PEXa pipe in hydronic and potable water distribution systems. Sized at 1 inch by 3/4 inch, it transitions between two common PEX pipe diameters without the need for solder, press tools, or open flame. The fitting uses the EVERLOC+ compression-sleeve method, which requires the dedicated EVERLOC+ installation tool to cold-expand and seat the sleeve. Temperature and pressure ratings conform to ASTM F877 and CSA B137.5 for SDR9 PEX pipe. Licensed plumbers and hydronic system installers are the primary tradespeople who work with this fitting.

This coupling is used in residential and light commercial plumbing and radiant heating systems where a reduction from 1 inch to 3/4 inch PEXa pipe is required. Typical applications include main supply takeoffs, manifold branch transitions, and inline pipe size reductions within concealed or accessible wall, floor, and ceiling assemblies. Because the fitting is polymer construction, it is suitable for systems where dezincification or corrosion of metallic fittings is a concern. All installations must use REHAU PEXa pipe to maintain compliance with the stated ASTM and CSA ratings.

Key Features

• Reduces 1 inch PEXa to 3/4 inch PEXa in a single fitting
• Polymer body resists corrosion and dezincification
• Compression-sleeve connection method requires no flame, solder, or press jaws
• Rated to ASTM F877 and CSA B137.5 for SDR9 PEXa pipe
• Compatible exclusively with REHAU EVERLOC+ compression-sleeve tooling

Compatibility

Designed for use with REHAU PEXa pipe. Installation requires EVERLOC+ compression-sleeve tools. Pressure and temperature ratings apply to SDR9 PEX per ASTM F877 and CSA B137.5; consult REHAU pipe product submittals for full system ratings.

Installation Notes

Installation must be performed by a licensed plumber using the REHAU EVERLOC+ compression-sleeve tool set. Shut off and depressurize the water supply before cutting into any existing line. Do not attempt to install this fitting with expansion-style or crimp-style tooling, as the connection method is not interchangeable. Follow all applicable local plumbing codes and REHAU installation guidelines for PEXa systems.

Technical Specifications

• Size: 1 inch x 3/4 inch
• Connection Type: Compression sleeve
• Material: Polymer
• Applicable Standards: ASTM F877, CSA B137.5
• Compatible Pipe Type: REHAU PEXa SDR9

Standard Information

• Brand: REHAU
• Manufacturer Part Number: 104831-001