Nibco B025300 Cast Copper Adapter 1x1-1/2 Inch C X F

Product Description

The NIBCO B025300 is a cast copper pipe adapter designed to connect a 1-inch copper sweat (C) end to a 1-1/2-inch female (F) threaded connection in a pressure piping system. This fitting is used to transition between a copper solder-joint line and a female-threaded port on a valve, pump, or fixture. Cast copper construction provides the durability and corrosion resistance required for potable water, hydronic heating, and general plumbing pressure applications. Licensed plumbers and mechanical contractors install this fitting as part of sweat-and-thread transitions in both new construction and retrofit work.

This adapter is suited for residential and light commercial plumbing systems where a copper-to-threaded transition is needed at a size change. The C x F end configuration allows the 1-inch copper tubing side to be soldered directly to the fitting, while the 1-1/2-inch female threaded end accepts a standard male-threaded fitting or valve body. Typical applications include connecting copper supply lines to threaded equipment connections, manifolds, or shutoff valves in pressure piping assemblies.

Key Features

• Cast copper construction for reliable performance in pressure piping systems
• 1-inch C (copper sweat) inlet to 1-1/2-inch F (female thread) outlet configuration
• Pressure fitting style rated for use in potable water and hydronic systems
• Solder-joint end accepts standard copper tubing for a leak-tight sweat connection
• Compact adapter form allows size-change and end-type transition in a single fitting

Compatibility

Designed as an OEM-style replacement and standard-use pressure fitting adapter for residential and commercial copper plumbing systems requiring a 1-inch C to 1-1/2-inch female threaded transition.

Installation Notes

Installation should be performed by a licensed plumber in accordance with the International Plumbing Code (IPC) and applicable local codes. Shut off and depressurize the water system completely before cutting or disassembling existing pipe. The sweat end requires proper flux application, torch heating, and lead-free solder; the female threaded end should be mated with an appropriate thread sealant or PTFE tape. Do not overtighten the threaded connection, as cast copper fittings can crack under excessive torque.