1-1/4 inch x 1 inch Copper Reducing Adapter Copper x Female

1-1/4” x 1” Copper Reducing Adapter – Sweat to Female Threaded Transition Fitting

The 1-1/4” Copper Reducing Adapter is a transition fitting designed to connect copper tube to female-threaded pipe or components of smaller diameter. This adapter provides a secure and code-compliant method for adapting piping systems that require a change in both size and connection type—from sweat (socket solder) to NPT female thread.

Manufactured from lead-free wrought copper alloy, this fitting meets current U.S. potable water standards and is suitable for installation in hot and cold water supply systems, mechanical piping, and closed-loop hydronic configurations.

Functional Advantages

• ✅ Lead-Free Copper Alloy In compliance with NSF/ANSI 61 and 372 for use in systems carrying potable water.
• ✅ Combination Connection Features a sweat socket on the larger end and female NPT threading on the reduced end to allow cross-material joining.
• ✅ Durable and Code-Compliant Fabricated to meet ASME B16.22 and ASTM B75/B88 standards for reliability in pressure piping systems.
• ✅ Corrosion Resistance Suitable for potable, chilled, and heated water systems where metal degradation resistance is critical.
• ✅ High Mechanical Integrity Maintains joint strength under thermal cycling and varying pressure conditions when properly soldered and torqued.

Technical Specifications

• Nominal Size: 1-1/4” x 1”
• Material: Lead-Free Wrought Copper
• Connection Type: Sweat x Female NPT Thread
• Applicable Standards: ASME B16.22, ASTM B75, NSF/ANSI 61 & 372

Installation Considerations

Before soldering, ensure both copper tube and fitting ends are cleaned and fluxed per standard practice. Apply uniform heat to promote capillary flow. For the threaded end, apply appropriate sealant (e.g., PTFE tape or approved thread compound) and avoid over-tightening to protect the fitting's thread integrity. Verify alignment during installation to prevent stress on the joint.

Application Context

This reducing adapter is typically used in commercial and residential potable water distribution, especially where a copper run transitions to threaded steel or brass components. Ideal for retrofits, boiler tie-ins, and valve installations requiring mixed-connection configurations.

Regulatory Compliance

This component meets lead-free requirements under the Safe Drinking Water Act (SDWA) and is approved for use in all jurisdictions where potable water compliance is enforced.