1-1/2 inch x 1-1/4 inch Copper Press Reducing Coupling Copper x Copper

1-1/2” x 1-1/4” Copper Press Reducing Coupling – Lead-Free, Code-Compliant Transition Fitting

This 1-1/2” x 1-1/4” copper press reducing coupling is designed for secure transitions between dissimilar pipe sizes in copper plumbing systems. Engineered to meet rigorous mechanical standards, this fitting supports permanent, press-to-connect assemblies in potable water, hydronic heating, and low-pressure system applications.

Manufactured from lead-free copper, this reducing coupling is compliant with NSF/ANSI 61 and NSF/ANSI 372 requirements for safe use in drinking water systems. The press connection system utilizes a mechanical crimp to achieve consistent sealing integrity and eliminates the need for open-flame soldering—streamlining installation time while maintaining code compliance.

Key Features

• ✅ Press Fit Connection: Designed for use with standard press tools to ensure fast, secure, and repeatable joints without the need for flux or solder.
• ✅ Lead-Free Copper Alloy: Meets federal and state mandates for potable water use in all jurisdictions across the U.S.
• ✅ Reduced Size Transition: Enables efficient connection between 1-1/2” and 1-1/4” nominal tubing, minimizing space requirements in tight mechanical rooms or wall cavities.
• ✅ Corrosion Resistance: Copper body resists internal scaling and degradation under typical domestic water conditions.
• ✅ Pressure Rated: Suitable for systems rated up to 200 PSI at operating temperatures ranging from 0°F to 250°F depending on application and sealing element used.

Technical Specifications

• Material: Lead-free copper alloy (typically UNS C12200 or equivalent)
• Connection: Press x Press (1-1/2” x 1-1/4” nominal)
• Compliance: NSF/ANSI 61 & 372, ASME B16.51, and applicable sections of IPC and UPC
• Seal Type: EPDM sealing element (factory-installed)

Installation Guidance

Proper pipe preparation is required—cut, deburr, and clean ends prior to assembly. Verify tool calibration before pressing to ensure uniform crimping force. The use of approved press systems (compatible with the fitting manufacturer’s guidelines) is necessary to maintain joint integrity and product warranty.

Common Applications

Suitable for use in hot and cold potable water systems, chilled water lines, and recirculating hydronic loops. This press reducing coupling is frequently installed in residential new construction, multi-unit retrofits, and commercial distribution lines where pipe size transitions are required within confined spaces.

Code Note:

This fitting meets the lead-free definition as required by the Safe Drinking Water Act (SDWA) and is approved for use in all states requiring ≤0.25% weighted average lead content across wetted surfaces.

With its compact form factor, reliable sealing performance, and code-compliant materials, the 1-1/2” x 1-1/4” copper press reducing coupling is an efficient solution for professional-grade plumbing installations requiring consistent, leak-resistant transitions between copper lines.