1/2 inch Copper Union Copper x Copper

1/2 inch Copper Union – Copper x Copper Sweat Connection for Serviceable Joints

The 1/2 inch Copper Union Copper x Copper is a mechanically separable fitting designed to join two 1/2 inch copper tube ends in potable water, hydronic heating, and general plumbing systems. Manufactured from lead-free copper alloy, this union provides a reliable solution where future disassembly or maintenance access is required without disturbing adjoining pipe runs.

The union features solder (sweat) ends that conform to ASTM B88 dimensions for Type L and Type M copper tube compatibility. A center nut secures the mating halves, compressing a brass or copper seat to ensure a tight, leak-resistant seal when torqued to specification.

Product Attributes for Field Use

• ✅ Lead-Free Copper Construction Complies with NSF/ANSI 61 and 372 for use in potable water systems.
• ✅ Sweat x Sweat Connection Socket ends accommodate copper tubing for soldered installation with approved flux and filler alloy.
• ✅ Union Nut Assembly Enables disconnection of piping assemblies without cutting, ideal for serviceable components or confined areas.
• ✅ Pressure Rated Suitable for water system pressures up to 200 PSI (when soldered properly and supported per code).

Technical Specifications

• Material: Copper Alloy (C12200 or equivalent)
• Nominal Size: 1/2 inch
• Connection Type: Sweat x Sweat (Copper x Copper)
• Standards: ASME B16.22, ASTM B75, NSF/ANSI 61 & 372

Application Overview

Typically used in residential and light commercial water supply lines, the 1/2 inch copper union is ideal for fixture tie-ins, valve connections, expansion tank assemblies, and other components requiring periodic service or future replacement. The union nut allows for efficient disconnection and reassembly without the need for additional fittings.

Installation Note

Install with proper soldering techniques per applicable codes. Surfaces must be cleaned, fluxed, and heated evenly to ensure full filler penetration. Do not overtighten the union nut to avoid deformation of the sealing surfaces. For optimal sealing, ensure the union seat is free of debris and properly aligned.

The 1/2 inch Copper Union Copper x Copper offers a dependable and serviceable solution for copper piping systems that require modular assembly or disassembly. Engineered for long-term use in code-compliant plumbing applications.