2 inch x 1-1/2 inch Copper Reducing Adapter Male x Copper

1-1/2” x 2” Copper Reducing Adapter – Male NPT x Solder End

The 1-1/2” x 2” Copper Reducing Adapter is designed for transitioning between threaded and soldered copper piping systems of differing diameters. With a male National Pipe Thread (NPT) end and a copper socket (cup) on the opposite end, it provides a secure and code-compliant method for reducing pipe size in potable water, HVAC, and hydronic systems.

Product Overview

• End Connection: 1-1/2 inch Male NPT x 2 inch Copper Solder (C x M)
• Material: Lead-free wrought copper conforming to ASTM B75 or B88
• Standards: NSF/ANSI 61 & 372 certified for use in potable water applications
• Pressure Rating: Suitable for up to 200 PSI non-shock in water systems when properly installed
• Temperature Range: Typically rated for continuous service from 0°F to 250°F

Installation Notes

This fitting requires a soldered joint on the copper cup side and a threaded seal on the male NPT side. Use an NSF-approved flux and lead-free solder for potable applications. On the male threaded end, apply thread sealant or PTFE tape as required to create a pressure-tight connection. Ensure pipe ends are clean and deburred prior to assembly to prevent joint failure or contamination.

Applications

Common in commercial and residential installations, including:

• Transitioning from threaded valves or components to copper tubing
• Reductions in pipe diameter within water distribution lines
• Mechanical equipment tie-ins such as water heaters, manifolds, and pumps

Code Compliance

This fitting meets the current lead-free legislation across all U.S. states, including compliance with the Safe Drinking Water Act (SDWA). It is acceptable for use in systems governed by the IPC, UPC, and local municipal plumbing codes.

Material Advantage

Wrought copper adapters offer greater mechanical strength and better corrosion resistance than cast-brass alternatives. The smooth bore of the copper cup promotes laminar flow and reduces scaling in domestic water systems.

For contractors requiring dependable performance and dimensional accuracy, the 1-1/2” x 2” Copper Reducing Adapter (Male x Copper) provides a robust solution for adapting systems to meet layout, equipment, or code-driven design changes.