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

1-1/2 inch x 1-1/4 inch Copper Reducing Coupling – Precision for Transition Applications

Engineered for systems requiring size transitions between 1-1/2 inch and 1-1/4 inch copper tube, this copper reducing coupling provides a clean, consistent, and durable joint for fluid transport lines. Ideal for high-integrity pressure and domestic water applications, the fitting supports secure sweat connections under industry-standard conditions.

Manufactured from lead-free, commercially pure copper, this coupling conforms to applicable plumbing codes and provides long-term corrosion resistance. Its design facilitates uniform heat distribution during soldering, minimizing joint failure and rework in the field.

Application-Specific Performance

This reducing coupling offers key advantages in pressure-rated systems and space-constrained layouts:

• ✅ Dimensional Accuracy – Machined to industry-standard tolerances to ensure smooth insertion and proper capillary action during soldering.
• ✅ Thermal Conductivity – Copper body promotes rapid heat transfer, supporting reliable solder flow and full circumferential bonding.
• ✅ Mechanical Durability – Maintains structural integrity under typical temperature and pressure variations in domestic and light commercial systems.
• ✅ Reliable Fit-Up – Compatible with ASTM B88 copper tubing and other fittings in Type L and Type M classifications.
• ✅ Compliance Ready – Lead-free alloy complies with federal and state potable water safety standards (including NSF/ANSI 61 and 372).

Installation Parameters

Proper installation requires surface preparation and application of flux prior to heat and solder. Recommended for use by experienced professionals to ensure full penetration and uniform joints. Heating must be controlled to avoid overburning or joint weakening.

Product Data

• Size: 1-1/2 inch x 1-1/4 inch nominal copper tube (sweat x sweat)
• Material: C12200 copper, lead-free
• Connection Method: Solder (sweat ends)
• Certifications: NSF/ANSI 61, NSF/ANSI 372; meets applicable IPC and UPC standards

System Integration

Used across domestic water supply lines, mechanical piping systems, and heating circuits, this fitting allows seamless integration of different pipe diameters without the need for additional adapters. It’s well suited for copper-to-copper connections in tight utility spaces, risers, and branch supply lines.

Standards & Material Notes

Copper’s long track record in pressurized plumbing stems from its high corrosion resistance, workability, and compatibility with thermal joining processes. Reducing couplings serve a critical role in adapting system layout without compromising flow characteristics or joint reliability.