1-1/2 inch x 1-1/4 inch Copper Reducing Adapter Female x Copper

1-1/4 inch x 1-1/2 inch Copper Reducing Adapter – Sweat Fitting for Line Size Transition

The 1-1/4 inch x 1-1/2 inch Copper Reducing Adapter is a sweat (solder) fitting designed to connect copper tubing of two different nominal sizes within a pressurized piping system. Manufactured from wrought copper to ASTM specifications, this fitting is intended for use in potable water, hydronic heating, and compatible mechanical applications.

Commonly used in branch or riser transitions, the reducing adapter enables direct connection between 1-1/4 inch and 1-1/2 inch Type L or Type M copper tube without the need for additional couplings or bushings. Its smooth interior and tapered design support optimal flow dynamics while minimizing pressure drop across the transition.

Performance Attributes

• ✅ Wrought Copper Construction: Fabricated to ASTM B75/B88 standards for strength, corrosion resistance, and brazing compatibility.
• ✅ Lead-Free Compliance: Meets NSF/ANSI 61 and 372 for use in potable water distribution systems.
• ✅ Sweat Connection: Socket-type ends sized for insertion of copper tubing; requires solder and flux for joint assembly.
• ✅ Direct Size Reduction: Reduces 1-1/2 inch tube to 1-1/4 inch tube within a single fitting to streamline layout and reduce fittings count.
• ✅ Code Approved: Suitable for use under UPC, IPC, and most local plumbing codes when installed in accordance with manufacturer and code requirements.

Technical Specifications

• Material: Wrought Copper (Alloy C12200)
• Nominal Sizes: 1-1/2 inch x 1-1/4 inch
• Connection Type: Copper Socket x Copper Socket (Sweat)
• Standards: ASTM B75/B88, ANSI B16.22, NSF/ANSI 61 & 372

Installation Requirements

Prepare tubing ends by cleaning and deburring. Apply lead-free flux and fully insert tubing into the fitting. Use appropriate heating methods to ensure even solder flow around the joint. Avoid overheating and verify solder penetration for a complete seal. Pressure test system after cooling to confirm leak-free performance.

Application Range

Used in water supply, hydronic heating, and closed-loop piping systems requiring a size transition between 1-1/2 inch and 1-1/4 inch copper lines. Common in distribution headers, risers, and zone manifolds in both residential and commercial plumbing infrastructure.

Regulatory Note

Federal legislation mandates the use of lead-free components in all potable water installations. This copper fitting is certified for compliance and suitable for projects requiring adherence to the Safe Drinking Water Act (SDWA).

The 1-1/4 inch x 1-1/2 inch Copper Reducing Adapter provides a compact, code-compliant solution for adapting between copper tube sizes in soldered assemblies. Its precision-formed sockets and corrosion-resistant composition make it a reliable choice for contractors working on professional-grade mechanical and plumbing systems.