3/4 inch ID x 5/8 inch Copper Reducing Coupling Fitting x Copper

3/4 inch x 5/8 inch Copper Reducing Coupling – Precision Fitting for Size Transitions

The 3/4 inch x 5/8 inch Copper Reducing Coupling is designed for soldered joint applications where a reduction in copper tube diameter is required. Fabricated from seamless copper tubing, this coupling offers reliable dimensional stability and is suitable for both potable water systems and closed-loop hydronic installations.

This fitting is manufactured to meet industry standards for wall thickness, concentricity, and end preparation. It is compatible with ASTM B88 copper tubing and meets NSF/ANSI requirements for use in potable water applications. A clean fit and reliable braze or solder bond are critical for system performance in both residential and commercial settings.

Key Performance Attributes

Professionals rely on copper fittings for their balance of mechanical integrity and corrosion resistance. This reducer coupling offers:

• ✅ ASTM-Compliant Copper Construction Supports temperature and pressure ratings consistent with Type L and M copper tube standards.
• ✅ Factory-Cut Ends Deburred and ready for soldering or brazing, ensuring fast installation and optimal capillary action.
• ✅ Code-Compliant Lead-Free Alloy Certified for potable water systems under current U.S. Safe Drinking Water Act (SDWA) regulations.
• ✅ Reliable Size Transition Provides a uniform reduction from 3/4 inch to 5/8 inch with minimal turbulence or pressure drop.
• ✅ Thermal Compatibility Suitable for use in systems with temperature fluctuations, including hot and cold domestic water lines.

Installation Notes

Use standard cleaning and fluxing procedures to prepare tubing and fitting. Apply heat evenly to avoid overheating, and ensure full solder flow around the joint perimeter. Always follow applicable plumbing codes for joint preparation and post-solder cleaning to avoid flux residue contamination.

Application Scope

This reducing coupling is typically installed in water supply lines, mechanical piping, and retrofit systems requiring a precise reduction between copper tube sizes. Common in branch drops, fixture connections, and manifold setups where space and flow control are factors.

Regulatory Compliance

This fitting conforms to ANSI/NSF 61 and 372 for lead-free performance and is suitable for use in all jurisdictions enforcing lead-free mandates for drinking water systems.

Technical Specifications

• Material: Lead-Free Copper Alloy
• End Connections: Sweat x Sweat
• Sizes: 3/4 inch x 5/8 inch
• Standards: ANSI/ASME B16.22, ASTM B75/B88, NSF/ANSI 61 & 372