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The ELKHART PRODUCTS COU-4X2 is a wrot copper reducer coupling with stop, designed for sweat-solder (C x C) copper pipe connections in plumbing and mechanical piping systems. It reduces a 4-inch line down to a 2-inch line with a built-in stop that seats the smaller pipe at the correct depth, ensuring a consistent and leak-free solder joint. Weighing 2.192 pounds and fabricated from wrot copper, this fitting meets the demands of professional plumbing installations where dimensional accuracy and material reliability are critical. Licensed plumbers and pipefitters are the primary installers for this type of fitting.
This reducer coupling is suited for residential and commercial plumbing systems where a transition from 4-inch to 2-inch copper pipe is required. Typical applications include drain, waste, and vent (DWV) stub-outs, supply line transitions, and mechanical room piping configurations. The C x C (copper-to-copper) end prep is compatible with standard sweat-solder assembly methods used throughout the trade.
Designed as an OEM-style replacement or new-installation fitting for 4-inch to 2-inch copper pipe systems assembled using standard sweat-solder C x C methods.
Installation is performed by a licensed plumber or pipefitter using standard sweat-solder tools including a pipe cutter, deburring tool, flux, solder, and a torch. Shut off and drain the water supply completely before cutting into any live line. Follow applicable plumbing codes, including IPC and local amendments, for fitting selection and joint preparation. Allow the completed joint to cool fully before restoring pressure to the system.
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