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The NIBCO INC W01100D is a 1-inch CxF (copper-by-female) solder adapter designed to transition a sweat copper connection to a female NPT threaded connection. The fitting features a solder cup end for copper tube and a female NPT threaded end, allowing a plumber or pipefitter to bridge soldered copper pipe systems to threaded pipe components. Constructed to lead-free standards, the W01100D is suitable for potable water applications where lead-free compliance is required. It is sold in packages of 10 units.
This adapter is used in residential and light commercial plumbing systems where copper supply lines must connect to threaded valves, fixtures, or equipment. Typical applications include water supply rough-in, fixture connections, and equipment hookups where a soldered copper line terminates at a threaded port. The lead-free construction meets regulatory requirements for drinking water systems in most jurisdictions.
Designed as an OEM-style replacement and standard fitting for 1-inch copper tube systems requiring a transition to female NPT threaded connections in residential and commercial plumbing applications.
Installation is performed by a licensed plumber or qualified pipefitter. Shut off and drain the water supply before cutting into any existing line. The solder cup end requires standard sweat-soldering technique using appropriate flux and solder compliant with local plumbing codes, such as those referenced in the IPC and IFGC. Do not over-tighten the female NPT threads; use appropriate thread sealant or PTFE tape on the mating male threaded fitting.
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