3/4 inch Copper Coupling with Stop Copper x Copper

3/4" Copper Coupling – Precision-Fit for Sweat Applications

The 3/4" copper coupling is designed to provide a reliable, permanent connection for joining two pieces of copper tubing in residential and commercial potable water systems. Manufactured from high-grade, lead-free copper, this straight coupling is engineered for use in sweat (soldered) applications, meeting current plumbing codes and industry expectations for performance.

Its uniform construction ensures compatibility with ASTM B88 copper tubing (Types L and M), allowing for consistent capillary action during soldering and reducing the potential for installation errors. Ideal for both new construction and retrofit work, this coupling supports a wide range of pressure and temperature conditions typically encountered in water distribution and HVAC systems.

Key Features

• ✅ Lead-Free Copper: Complies with NSF/ANSI 61 and 372 for potable water use.
• ✅ Sweat Connection: Designed for soldering to copper tubing with a standard torch and solder.
• ✅ Precision Machined: Uniform wall thickness and tight dimensional tolerances for clean fits and smooth solder flow.
• ✅ Corrosion Resistant: Copper naturally resists corrosion in water applications, ensuring long-term durability.
• ✅ Code Compliant: Manufactured to meet applicable IPC, UPC, and local plumbing codes.

Specifications

• Material: Lead-free copper
• Nominal Size: 3/4 inch
• End Connections: Copper x Copper (Slip x Slip)
• Standards: ASTM B75, ASME B16.22
• Certification: NSF 61, NSF 372 compliant

Application

This coupling is used in hot and cold potable water systems, chilled water return loops, hydronic heating circuits, and general plumbing distribution where soldered copper joints are specified. It is commonly found in both vertical and horizontal copper runs and is especially useful when extending or repairing straight sections of tubing.

Installation Guidance

Installation should be performed by a qualified professional using standard sweat fitting practices. Ensure all mating surfaces are clean and dry. Use flux and lead-free solder approved for potable water systems. Heating should be controlled to avoid damage to nearby joints or components. Always follow local codes and manufacturer instructions.

Note:

Use of lead-free copper fittings is required by law for all potable water systems across the U.S. under the Reduction of Lead in Drinking Water Act.

Professionals count on precision-engineered copper fittings like this 3/4" coupling for high-integrity water system construction. Whether you're working on municipal-grade infrastructure or a residential retrofit, this coupling offers the reliability, compliance, and performance your projects demand.