1/2 inch x 1/4 inch Copper Reducing Adapter Copper x Male

1/2 inch x 1/4 inch Copper Reducing Adapter – Solder x Male Thread Transition Fitting

The 1/2 inch x 1/4 inch Copper Reducing Adapter is a lead-free transition fitting used to connect copper tube to male-threaded components of smaller size. Designed for use in both residential and commercial plumbing systems, this adapter features a solder (sweat) cup on one end and a male NPT (National Pipe Taper) thread on the other, allowing for a secure reduction in pipe size while maintaining system integrity.

Manufactured from wrought copper or cast copper alloy in compliance with ASTM B75/B88 and ASME B16.22 standards, this adapter is suitable for use in potable water distribution, hydronic heating, and general fluid conveyance applications. The fitting is certified lead-free to meet U.S. Safe Drinking Water Act requirements.

Product Specifications

• Nominal Size: 1/2 inch Copper x 1/4 inch Male NPT
• Connection Type: Solder (cup) x Male Thread
• Material: Lead-free copper or copper alloy per ASTM standards
• Standards: ASME B16.22, NSF/ANSI 61 & 372 (lead-free compliance)
• Pressure Rating: Suitable for use in systems up to 200 PSI at 73°F when installed to code

Installation Considerations

Ensure the copper tube end is cleaned and deburred before soldering. Apply approved flux and heat uniformly to achieve a reliable solder joint. For the male threaded end, apply an appropriate thread sealant or PTFE tape, and tighten by hand, followed by wrench adjustment without over-torquing. All joints must comply with applicable local plumbing codes.

Typical Applications

This reducing adapter is commonly used in hot and cold potable water systems, HVAC loops, and branch line transitions requiring a reduction to a smaller threaded connection. Typical installation locations include under-sink valves, fixture risers, and pressure gauge assemblies.

Material Notes

Lead-free copper fittings are required in all potable water systems in the U.S. This adapter complies with NSF/ANSI 372, ensuring no more than 0.25% lead content by weight. Its corrosion-resistant properties make it suitable for long-term installation in domestic and light commercial piping systems.

The 1/2 inch x 1/4 inch Copper Reducing Adapter provides a secure and compliant connection between copper tube and threaded components. It supports leak-resistant performance in size transitions where space constraints or system requirements call for reduced outlet connections.