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The NIBCO INC W00750T is a 3/4-inch copper-by-copper (CxC) solder coupling designed to join two lengths of copper tubing in a continuous run. It features solder cups at both ends and a dimple stop that positions tubing at the correct insertion depth before soldering, ensuring a consistent, leak-free joint. The fitting is lead-free, meeting potable water compliance requirements. It is a standard production fitting used in residential and light commercial plumbing systems by licensed plumbers and experienced pipefitters.
This coupling is suited for sweat-soldered copper tubing installations in domestic water supply lines, hydronic heating distribution piping, and similar wet plumbing applications where a straight inline connection is required. The 3/4-inch CxC configuration handles standard Type K, L, or M copper tubing of the same nominal size. It is sold in packages of 25 units, making it practical for service contractors and new construction plumbers stocking common fittings.
Designed as an OEM-style sweat fitting for use with 3/4-inch nominal copper tubing in standard residential and commercial plumbing installations.
Installation is performed by a licensed plumber following applicable IPC or local plumbing code requirements. Shut off the water supply and fully drain the line before cutting and fitting. Clean tubing ends and fitting cups with emery cloth and apply flux before soldering with a propane or MAPP torch. Do not apply heat directly to the fitting body longer than necessary, and allow the joint to cool before restoring water pressure.
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