Mueller Industries MUE-W02746NL Companion Flange 2.5in

Product Description

The MUELLER INDUSTRIES MUE-W02746NL is a two-piece, wrot copper companion flange fitting designed for 2.5-inch copper piping systems. The assembly connects a cup-end (female solder) copper sleeve to a flanged connection point, allowing installers to solder or braze the copper side using standard wrot copper techniques. An EPDM insulator provides full electrolysis protection for both above-ground and below-ground installations. The epoxy-coated backing ring accommodates minor alignment adjustments and resists deflection and corrosion. Rated to 125/150 lb. companion flange service, this fitting suits professional plumbing and mechanical contractors working on copper distribution systems.

This fitting is used in residential and commercial plumbing and mechanical systems where a copper pipe run must terminate at a flanged connection. It is well suited for installations requiring corrosion protection at the flange joint, including buried or below-slab applications. The two-piece construction simplifies field assembly and allows the copper sleeve to be soldered prior to final flange make-up, which is a common workflow advantage on tight-clearance rough-in work.

Key Features

• Two-piece wrot copper and steel construction for standard solder or braze assembly on the copper end
• EPDM insulator delivers 100 percent electrolysis protection above and below ground
• Epoxy-coated backing ring adjusts for alignment and resists corrosion and deflection
• 125/150 lb. companion flange rating for broad system compatibility
• Meets NSF 61G, ASME B16.22, and ASME B16.50 standards

Compatibility

Designed as an OEM-style replacement or new-installation fitting for 2.5-inch wrot copper piping systems requiring a cup-by-flange termination in residential and commercial plumbing and mechanical applications.

Installation Notes

Installation should be performed by a licensed plumber or mechanical contractor in accordance with applicable local codes and ASME B16.22 and B16.50 guidelines. Shut off and depressurize the water system and allow all piping to cool completely before beginning work. Solder or braze the copper sleeve end using standard wrot copper fitting procedures before completing the flange make-up. Do not over-stress the backing ring during alignment adjustment, as the epoxy coating provides corrosion protection that should be kept intact.

Technical Specifications

• End Type: C - Cup (Female Solder)
• End Size: 2.5 inches
• Second End Type: Flange
• Second End Size: 2.5 inches
• Material: Wrot Copper / Steel
• Insulator Material: EPDM
• Backing Ring Finish: Epoxy-coated
• Pressure / Temperature Rating: Per CDA Copper Fitting Pressure-Temperature Ratings
• Weight: 8.10 pounds
• Standards: NSF 61G, ASME B16.22, ASME B16.50

Standard Information

• Brand: MUELLER INDUSTRIES
• Manufacturer Part Number: MUE-W02746NL