1/2 inch x 3/8 inch Copper Reducing Adapter Copper x Male

1/2 inch x 3/8 inch Copper Reducing Adapter – Lead-Free Sweat Fitting

The 1/2 inch x 3/8 inch copper reducing adapter is engineered to transition between two nominal copper tube sizes in hydronic and potable water systems. Fabricated from lead-free wrought copper, this fitting is designed for soldered (sweat) connections in systems that require a secure reduction in line diameter without compromising structural integrity or flow efficiency.

Compliant with ASTM B75 and NSF/ANSI 61 and 372 standards, the reducing adapter meets all applicable codes for use in potable water distribution and mechanical piping systems. Its uniform wall thickness and precise socket tolerances ensure reliable joint performance under thermal and pressure cycling.

Technical Specifications

• Connection Type: Cup x Cup (sweat connection for soldering)
• Size: 1/2 inch nominal CTS x 3/8 inch nominal CTS
• Material: Lead-free wrought copper (ASTM B75)
• Operating Pressure: Up to 200 PSI in water systems
• Temperature Rating: Suitable for continuous service up to 400°F with proper solder
• Compliance: NSF/ANSI 61 & 372 certified; UPC and IPC code compliant

Common Applications

This copper reducing adapter is typically used in:

• • Potable water distribution systems
• • Hydronic baseboard or radiant heating installations
• • Copper manifold transitions in residential and commercial buildings
• • Compact or retrofitted layouts where multiple line sizes are integrated

Installation Guidelines

Surfaces must be cleaned and flux applied before soldering. Use lead-free solder and approved joining methods in accordance with local code. Do not overheat; excessive temperature may weaken joint integrity. Always verify pipe sizing and fitting depth to ensure full socket engagement.

Material Note

Lead-free copper fittings are required in all potable water systems in compliance with federal and state regulations. Copper offers excellent corrosion resistance, thermal conductivity, and is widely accepted across all plumbing codes for its long-term performance in fluid transport systems.