2 inch Copper Union Copper x Copper

2-Inch Copper Union – Copper x Copper Mechanical Fitting for Sweat Applications

The 2-Inch Copper Union Copper x Copper is a mechanical fitting designed for joining two copper tube sections where periodic disassembly or maintenance access is required. This union allows for separation of copper piping without cutting, making it ideal for equipment connections, service valves, and isolation points in water supply and hydronic systems.

Manufactured from lead-free wrought copper alloy, the union meets applicable codes for potable water installations. The design includes a center nut and metal-to-metal seat that, when properly assembled, ensures mechanical strength and leak resistance under standard system pressures.

Functional and Installation Benefits

• ✅ Sweat Connection Ends – Copper x Copper sockets are intended for soldered joints using ASTM B88 copper tubing and lead-free solder alloys.
• ✅ Serviceability – Facilitates pipe disconnection without disturbing adjacent joints, reducing downtime during equipment replacement or repair.
• ✅ Forged Copper Construction – Provides dimensional stability and long-term corrosion resistance in potable water and closed-loop applications.
• ✅ Center Nut Design – Allows for mechanical tightening to achieve compression at the union seat, creating a secure, reusable connection point.
• ✅ Code Compliance – Suitable for use in systems regulated by IPC, UPC, and NSF/ANSI 61 for potable water distribution.

Installation Requirements

Proper surface preparation and soldering technique are critical for performance. The copper sockets should be cleaned and fluxed prior to soldering, with even heat applied to ensure full capillary action. The union nut should not be overtightened, and thread sealant is not required on the union seat. Verify all local codes regarding joint assembly and pressure testing procedures.

Common Applications

Used in commercial and residential plumbing systems, this copper union is typically installed at transitional points where equipment or fixtures may require isolation or removal. Typical use cases include water heaters, boilers, manifolds, filtration systems, and pressure-regulated zones. Suitable for both vertical and horizontal configurations.

Material Compliance

This fitting is manufactured from lead-free materials in accordance with the Reduction of Lead in Drinking Water Act and is certified for use in potable water systems. It meets current federal and state mandates regarding allowable lead content in plumbing components.

Technical Specifications

• Material: Lead-Free Wrought Copper Alloy
• Nominal Size: 2 inches
• End Connections: Sweat (Copper x Copper)
• Design: Union with center nut and metal-to-metal seat
• Certifications: NSF/ANSI 61, NSF 372; conforms to ASME B16.22

The 2-Inch Copper Union provides a reliable solution for pipe joint disassembly and equipment integration in copper systems. Designed for durability, repeatable performance, and regulatory compliance, it is a standard component in professional-grade plumbing assemblies.