5/8 inch ID x 1/2 inch Copper Reducing Coupling Copper x Copper

5/8" ID x 1/2" Copper Reducing Coupling – Precision-Formed for Tight Soldered Joints

This 5/8 inch inside diameter by 1/2 inch copper reducing coupling is manufactured for joining copper tubing of dissimilar sizes in pressurized plumbing and hydronic systems. Constructed from wrought copper alloy, it offers corrosion resistance, dimensional accuracy, and seamless integration in potable water or HVAC systems requiring reduced pipe transitions.

The coupling features a solder connection on each end, providing a strong, permanent joint when properly installed with lead-free solder and flux. It is designed for compatibility with nominal copper tubing, delivering dependable flow and thermal performance in new construction or retrofit work.

Key Product Features

• ✅ Material: Wrought Copper (ASTM B75/B88, C12200)
• ✅ Dimensions: 5/8 inch ID x 1/2 inch nominal pipe size
• ✅ Connection: Cup x Cup solder joint
• ✅ Pressure Rating: Suitable for use in systems up to 200 PSI (dependent on installation and solder integrity)
• ✅ Temperature Rating: Max operating temperature up to 400°F in hot water and low-pressure steam systems
• ✅ Certification: Lead-free compliant; NSF 61/NSF 372 certified for potable water applications

Typical Applications

This reducing coupling is commonly used in:

• • Potable water supply systems
• • Hydronic heating and chilled water loops
• • HVAC branch piping where size transitions are required
• • Remodel and retrofit scenarios with limited access or space constraints

Installation Guidance

Proper installation requires cleaning the mating surfaces, applying approved flux, and soldering with lead-free materials using a torch. Ensure full penetration and a consistent solder bead to achieve a pressure-tight joint. For high-stress environments or regulated installations, it is advisable to follow IPC/UPC or local code requirements.

Code and Material Compliance

All copper fittings intended for potable water are now required by U.S. federal and state plumbing codes to be lead-free (weighted average ≤ 0.25% Pb). This coupling is compliant with all current code mandates and safety standards for public and residential water systems.

Engineered to meet industry demands for durability and code compliance, the 5/8" ID x 1/2" Copper Reducing Coupling delivers reliable performance across residential and light commercial systems. Ideal for installers requiring consistent quality and dimensional accuracy in critical transitions.