1-1/4 inch x 1 inch Copper Reducing Coupling Fitting x Copper

Copper Reducing Coupling – Precision-Fit for Efficient Piping Transitions

The Copper Reducing Coupling is a professionally manufactured fitting designed to connect copper tubing of two different diameters within plumbing and mechanical systems. Commonly used in water supply, hydronic heating, and DWV applications, this coupling facilitates smooth diameter transitions while maintaining system integrity and flow continuity.

Fabricated from high-grade wrought copper, the coupling offers corrosion resistance and longevity under a range of environmental and mechanical stresses. The smooth interior surface minimizes pressure drop and turbulence, making it suitable for installations requiring consistent performance and durability.

Key Features

• ✅ Wrought Copper Body – Manufactured in accordance with ASTM B75 or B88 for dependable strength and corrosion resistance.
• ✅ Sweat (Solder) Ends – Designed for soldered connections to type K, L, or M hard copper tubing in compliance with ASME B16.22 standards.
• ✅ Reduced Inlet/Outlet Configuration – Allows for efficient pipe size transition without flow restriction.
• ✅ Uniform Wall Thickness – Promotes even heat distribution during soldering and enhances mechanical performance under pressure.

Technical Specifications

• Material: Copper (Wrought)
• Fitting Type: Reducing Coupling
• Connection Type: Copper Sweat (Cup x Cup)
• Applicable Pipe Types: Copper Tube Types K, L, and M
• Manufacturing Standard: ASME B16.22 / NSF 61 compliant
• Temperature Rating: Up to 400°F (204°C)
• Pressure Rating: Dependent on tubing type and size, up to 200 psi typical for water service lines

Applications

Typically used in potable water distribution systems, hot and cold water lines, heating loops, and other pressurized copper piping installations. This coupling is also suitable for systems governed by IPC, UPC, and local plumbing codes.

Field Tip

Before installation, ensure the tubing is reamed and deburred to reduce turbulence and prevent solder joint failure. Use lead-free solder and flux per plumbing code requirements to maintain potable water system compliance.

The Copper Reducing Coupling is a critical component for contractors seeking high-integrity solutions in multi-diameter copper piping systems. Its performance consistency and code-compliant construction make it a reliable choice for both residential and commercial installations.