Hailiang HLG15-657-0390 Copper Union 2 Inches C X C

Product Description

The HAILIANG HLG15-657-0390 is a 2-inch copper union fitting designed for sweat (C x C) connections in pressurized plumbing systems. Unions allow a section of copper pipe to be disconnected and reconnected without cutting, making them essential for equipment isolation, service access, and future repairs. Constructed from copper, this fitting is sized at 2 inches with an OD of 2-1/8 inches. It is installed by licensed plumbers working on residential and commercial water distribution, hydronic heating, and mechanical piping systems where serviceability is a design requirement.

This union is suited for wet plumbing applications where copper-to-copper sweat joints are the specified connection method. Typical installations include supply and return lines at water heaters, boilers, pressure-reducing valves, strainers, and other serviceable components where the ability to break and remake a joint in-line adds value. The C x C end configuration requires standard copper tubing prep and lead-free solder or braze alloy per applicable code.

Key Features

• C x C (sweat) end connections for standard copper tube integration
• Full 2-inch nominal size accommodates high-flow residential and light commercial applications
• OD size of 2-1/8 inches for dimensional reference during layout and rough-in
• Copper construction provides corrosion resistance in potable water and hydronic systems
• Union design allows in-line disconnection without cutting pipe

Compatibility

Designed as an OEM-style replacement and standard-use fitting for 2-inch copper plumbing systems using sweat-joint (C x C) connections.

Installation Notes

Installation is performed by a licensed plumber following applicable IPC or local plumbing code requirements. Shut off the water supply and depressurize and drain the line before soldering. Use lead-free solder and flux rated for potable water service where required by code. Ensure mating union faces are clean and properly aligned before tightening the union nut to prevent joint stress and leaks.

Technical Specifications

• Material: Copper
• Nominal Size: 2 inches
• OD Size: 2-1/8 inches
• Connection Type: C x C (Sweat)
• Product Type: Union
• Category: Copper Fittings

Standard Information

• Brand: HAILIANG
• Manufacturer Part Number: HLG15-657-0390