3 inch Copper Coupling less Stop Copper x Copper

3” Copper Slip Coupling – Designed for Inline Repairs and Pipe Extensions

The 3” Copper Slip Coupling is a full-flow fitting engineered for the axial insertion of copper tube, ideal for inline repairs or length adjustments in Type L or Type M copper systems. Its smooth, extended socket design allows for the coupling to be positioned over existing piping, facilitating streamlined assembly without disturbing adjacent connections.

Manufactured from lead-free copper, this fitting meets national code requirements and is suited for use in pressure-rated potable water systems as well as non-potable mechanical piping applications. Its uniform wall thickness and precise internal diameter support strong, leak-resistant solder joints under standard installation practices.

Product Features

• ✅ Slip-Fit Design – Enables axial movement during installation, providing flexibility for section replacement or alignment.
• ✅ Lead-Free Copper Construction – Complies with ANSI/NSF 61-G requirements for potable water applications.
• ✅ Corrosion Resistance – Maintains structural performance in high-humidity and concealed environments.
• ✅ Sweat Connection – Designed for capillary soldering, promoting secure and consistent joint integrity.
• ✅ Full-Size Interior Bore – Maintains flow characteristics equivalent to standard copper tubing.

Installation Guidance

This coupling requires standard copper pipe preparation, including cleaning and fluxing both mating surfaces. Apply uniform heat to the joint area using an approved torch method to ensure complete solder penetration. Slip couplings are especially useful when working in confined spaces or when access to one side of the system is restricted. This fitting is not designed for threaded connections; no thread sealant is necessary.

Technical Specifications

• Nominal Size: 3 inches
• Material: Lead-Free Copper (ASTM B88 compliant)
• End Connections: Copper x Copper (Slip/Sweat)
• Application: Inline repair, retrofit, or pipe extension

Typical Use Cases

Often used in horizontal water supply or drainage lines, this slip coupling provides an efficient solution for system repairs, reroutes, or retrofitting where minimal pipe disruption is required. It is applicable in both residential and light commercial systems where precision alignment and flow continuity are critical.

Regulatory Compliance

This product meets national lead-free requirements and is approved for use in drinking water systems under the Safe Drinking Water Act. It is compliant with all U.S. state plumbing codes.

The 3” Copper Slip Coupling offers a professional-grade solution for system extensions or pipe section replacement. Built to meet code and maintain flow integrity, it remains a trusted component in any copper system requiring inline flexibility with minimal disruption.