1 inch x 3/4 inch Copper Flush Bushing Fitting x Copper

1 inch x 3/4 inch Copper Flush Bushing – Lead-Free Sweat Reducing Fitting for Potable Water Systems

The 1 inch x 3/4 inch Copper Flush Bushing is a sweat-type reducing fitting designed to transition between nominal pipe sizes within soldered copper piping systems. Engineered from lead-free wrought copper, this fitting provides a compact, flush connection between a larger female hub and smaller tubing, maintaining consistent system alignment and reducing internal turbulence.

Compliant with NSF/ANSI 61 and 372 for potable water use, this flush bushing is intended for soldered installations in residential and commercial pressure and non-pressure water systems. The fitting is typically installed in valves, tees, or copper coupling hubs requiring a size reduction while maintaining a clean internal profile.

Technical Specifications

• Material: Lead-Free Wrought Copper (C12200)
• Nominal Sizes: 1 inch x 3/4 inch
• Fitting Type: Flush Bushing, Sweat x Sweat
• Connection Standard: ASME B16.22
• Compliance: NSF/ANSI 61 & 372 (Safe Drinking Water Act)
• Application: Potable water, hydronic systems, and general utility piping

Installation Guidelines

Preparation includes cleaning mating surfaces with a wire brush or abrasive cloth. Apply a lead-free flux to both the fitting and tubing prior to assembly. Use an even heat source and lead-free solder to ensure a full circumferential bond. Allow adequate cooling before system testing. Follow all local code requirements and manufacturer installation practices for pressure testing and system startup.

Typical Use Cases

Used in copper piping systems where a size reduction is required at fittings such as tees, elbows, or valves. Common in potable water supply lines, hot and cold branch connections, and mechanical equipment tie-ins where compact, low-profile transitions are needed without adding overall fitting length.

Material Characteristics

Wrought copper provides high tensile strength, corrosion resistance, and long-term thermal performance. Flush bushings eliminate unnecessary protrusions into the flow path, helping to maintain consistent hydraulic characteristics across transitions.