1-1/4 inch x 3/4 inch Copper Press Reducing Coupling Copper x Copper

1-1/4" x 3/4" Copper Press Reducing Coupling – Lead-Free Fitting for Press-Connect Systems

The 1-1/4" x 3/4" copper press reducing coupling is a transition fitting designed for joining copper tubing of different nominal diameters in press-connect systems. It features press ends on both sides and incorporates a mechanical sealing element, allowing for secure, flame-free installation in potable water and hydronic distribution systems.

Manufactured from lead-free wrought copper and engineered in accordance with ASTM and ANSI performance standards, this coupling is compatible with Type L and Type M copper tubing. It is suitable for commercial, residential, and institutional plumbing installations where size reduction is required in a continuous copper line.

Technical Specifications

• Material: Lead-free wrought copper (Alloy C12200, ASTM B75)
• End Connections: Press x Press
• Sizes: 1-1/4" (inlet) x 3/4" (outlet)
• Seal Element: EPDM (for potable water applications)
• Compliance: NSF/ANSI 61 & 372; CUPC listed; conforms to ASME B16.51
• Maximum Working Pressure: 200 PSI (temperature-dependent)

Key Features

• ✅ Press-Connect Configuration – Enables flame-free installation using standard press tools
• ✅ Leak Detection – Includes a visual leak-indication feature when unpressed
• ✅ Lead-Free Certification – Compliant with U.S. Safe Drinking Water Act requirements
• ✅ Size Transition Capability – Connects mismatched copper pipe sizes in-line with minimal pressure drop
• ✅ Corrosion Resistance – Copper body and EPDM seal suitable for potable and non-potable water systems

Installation Requirements

Installation requires an approved press tool with the appropriate jaw configuration for each fitting size. Pipe ends must be clean, deburred, and marked for insertion depth before pressing. Ensure sealing surfaces are free of debris to maintain joint integrity. Do not solder or apply heat to press fittings. System pressure testing should follow the manufacturer’s guidelines post-installation.

Common Applications

Typically used in domestic water supply lines, hot and cold branch circuits, recirculation loops, and mechanical room manifolds. This fitting is especially useful where space limitations restrict the use of soldering or when dissimilar line sizes need to be joined without reducers and couplings in tandem.

Material and Code Compliance Note

All copper press fittings intended for potable systems must meet lead-free and mechanical performance standards as mandated by plumbing codes nationwide. This fitting is certified for such use and is acceptable in systems governed by IPC, UPC, and relevant municipal standards.

The 1-1/4" x 3/4" copper press reducing coupling provides a compact, efficient solution for downsizing copper tubing in professional-grade plumbing and mechanical systems.