2 inch Copper Coupling with Stop Copper x Copper

2" Copper Coupling with Stop – Wrought Copper Fitting for ASTM B88 Tube

The 2" Copper Coupling with Stop is a solder joint fitting designed for joining two sections of 2" copper tube in pressure or non-pressure plumbing systems. Engineered to meet ASME B16.22 and MSS SP-104 specifications, this coupling features an internal dimple (stop) that ensures accurate tube insertion depth and axial alignment during installation.

Manufactured from lead-free wrought copper material in compliance with NSF/ANSI 61 and 372, this coupling is suitable for use in potable water, hydronic heating, chilled water, and other mechanical piping systems. It is designed for use with standard soldering techniques and is compatible with Types K, L, and M hard drawn copper tubing.

Technical Specifications

• ✅ Size: 2" nominal (Copper Tube Size)
• ✅ Connection Type: Socket x Socket (Solder/Sweat) with Internal Stop
• ✅ Material: Wrought Copper (ASTM B75 or equivalent)
• ✅ Conformance: ASME B16.22, NSF/ANSI 61 & 372, MSS SP-104
• ✅ Operating Pressure: Up to 200 PSI (typical for potable and HVAC systems)
• ✅ Temperature Rating: Up to 400°F (soldered joint integrity)

Key Performance Features

• ✅ Internal Stop: Provides positive tube positioning, simplifying layout and maintaining proper expansion allowances.
• ✅ Uniform Wall Thickness: Supports consistent solder flow and joint integrity under fluctuating pressure and temperature conditions.
• ✅ Corrosion Resistance: Copper construction offers inherent resistance to scaling, pitting, and chemical degradation in domestic water and hydronic loops.
• ✅ Lead-Free Compliance: Meets Safe Drinking Water Act standards for potable water systems.

Applications

This coupling is used in commercial and residential piping systems where a mechanical, soldered connection is required between two copper tubes of equal size. It is commonly found in domestic hot and cold water distribution systems, recirculating loops, HVAC supply and return piping, and process water lines.

Installation Guidance

Install using standard preparation and soldering practices. Clean the tube ends and fitting sockets, apply approved flux, and assemble with uniform heat distribution to ensure complete solder penetration. Observe all local code requirements for pipe support, expansion compensation, and pressure testing procedures.

Conclusion

The 2" Copper Coupling with Stop provides a reliable, code-compliant connection point in copper tube installations. Its internal stop aids in proper tube placement and accelerates layout accuracy, while the lead-free copper construction supports both performance and regulatory compliance. Suitable for use in high-demand potable water and mechanical systems.