Mueller Industries W 01264 Copper Pipe Adapter 1x3/4 in

Product Description

The MUELLER INDUSTRIES W 01264 is a wrot copper pipe adapter designed to transition between a 1-inch copper pipe (C end) and a 3/4-inch female threaded connection (F end) using a solder joint. Wrot copper construction provides reliable corrosion resistance and durability in pressurized plumbing systems. The adapter meets multiple ASME and NSF standards, making it suitable for potable water and general plumbing applications. This fitting is a staple in residential and light commercial rough-in work and is installed by licensed plumbers and pipefitters who require a dependable reduction fitting at the point of transition.

This adapter is used wherever a 1-inch copper line must connect to a 3/4-inch female threaded port, such as at fixture supply lines, valve connections, or branch takeoffs. It is appropriate for residential water distribution, light commercial plumbing, and hydronic heating systems that use copper piping. The solder-joint cup connection on the copper side accepts standard 1-inch copper tube, while the female threaded end conforms to ASME B1.20.1 thread standards for secure mechanical engagement.

Key Features

• Wrot copper construction for strength and corrosion resistance in wet plumbing environments
• C x F end configuration — solder cup inlet, female threaded outlet
• 1-inch x 3/4-inch reducing adapter for common pipe-to-fitting transitions
• Meets ASME B16.15, B16.18, B16.22, B16.24, B16.50, and NSF 61G for potable water compliance
• Solder joint connection compatible with standard copper tube using lead-free solder

Compatibility

Designed as an OEM-style replacement and standard-fit component for copper plumbing systems requiring a 1-inch to 3/4-inch reducing adapter with a C x F solder joint end connection.

Installation Notes

Installation should be performed by a licensed plumber in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and fully depressurize and drain the line before soldering. Use lead-free solder and flux rated for potable water systems on the cup end, and apply thread sealant or PTFE tape to the female threaded connection before engaging the mating fitting. Do not apply heat to the threaded end after assembly.