1-1/2 inch x 3/4 inch Copper Reducing Coupling Fitting x Copper

1-1/2 inch x 3/4 inch Copper Reducing Coupling – Built for Code-Compliant Transitions

The 1-1/2 inch x 3/4 inch Copper Reducing Coupling is engineered to deliver a reliable, soldered transition between different nominal pipe sizes in pressure-rated and potable water systems. Manufactured to ANSI/ASME and ASTM B88 standards, this wrought copper fitting is fabricated for consistent wall thickness and uniform interior dimensions, ensuring clean, secure joints and system integrity.

This reducing coupling is commonly used in Type L or M copper tubing installations where a reduction in pipe size is required—such as branch lines, fixture supply drops, or zone transitions in hydronic systems. Its streamlined body allows for compact installation and reduced turbulence within the system.

Product Features

• Material: Wrought Copper – meets or exceeds ASTM B75 and NSF/ANSI 61/372 for lead-free compliance
• Size: 1-1/2 inch nominal x 3/4 inch nominal
• End Connections: C x C (solder cup x solder cup)
• Pressure Rating: Suitable for up to 200 PSI in pressure piping systems
• Temperature Rating: Serviceable up to 400°F with proper solder alloy

Applications

• Potable water supply distribution (hot and cold)
• Hydronic heating and chilled water systems
• Low-pressure HVAC piping and closed-loop fluid systems

Installation Guidelines

Installation involves cleaning the inside of the fitting and the outside of the tube using abrasive cloth or brush tools, followed by application of lead-free flux and soldering with an appropriate alloy. Ensure compliance with IPC/UPC and local code requirements for joining copper tubing systems. Proper heat control and full solder penetration are essential for code-compliant, leak-free performance.

Notes for Professionals

• Copper couplings must not be used in steam systems or unregulated compressed air applications.
• Verify tube depth insertion and solder draw length for optimal sealing strength.

With its corrosion resistance, longevity, and proven track record in building infrastructure, the 1-1/2 inch x 3/4 inch Copper Reducing Coupling is a dependable fitting for high-performance plumbing systems. Whether installed in new construction or retrofit environments, this fitting supports professional-grade results across potable and mechanical piping systems.