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The NDL INDUSTRIES W4017 is a standard copper tee fitting designed for sweat-solder connections in plumbing and hydronic systems. All three ports measure 3/4 inch and use a C x C x C (copper-to-copper-to-copper) connection type, allowing a plumber to branch a supply or return line in a clean, pressure-rated joint. This fitting is manufactured to standard dimensions for 3/4-inch nominal copper tube and is a routine component in residential and light commercial water distribution, radiant heat, and HVAC piping applications.
This tee is suited for potable water supply lines, hot and cold distribution piping, and hydronic heating or cooling loops where 3/4-inch copper tubing is the specified material. Licensed plumbers and HVAC technicians install this fitting during new construction, renovation, or repair work wherever a branch connection is needed on a 3/4-inch copper run. It ships in a box quantity of 25, making it practical for contractors stocking job-site supplies.
Designed as an OEM-style replacement and standard-use fitting compatible with 3/4-inch nominal copper tube in sweat-solder plumbing and hydronic piping systems.
Installation should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off and drain the water supply before cutting into any existing line. Clean all mating tube ends and fitting sockets with emery cloth, apply flux, and solder per accepted copper-joining practice. Allow joints to cool fully before restoring system pressure and checking for leaks.
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