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The NIBCO INC W01300D is a 2-inch CxM male adapter fitting designed to connect a solder (sweat) joint to a male NPT threaded connection. Part of the C604 fitting series, it features a solder cup end for copper tubing and a male NPT threaded end, allowing a copper pipe run to transition cleanly to a threaded component such as a valve, strainer, or pump port. The fitting is lead-free, meeting regulatory requirements for potable water systems. Plumbers and pipefitters install this adapter in both new construction and retrofit plumbing applications where copper and threaded systems must interface.
This fitting is suited for residential and light commercial plumbing installations where a copper sweat connection must mate to a threaded fitting or equipment port. Typical applications include connecting copper supply lines to threaded valves, boiler components, water heaters, and similar threaded-inlet equipment. The lead-free construction makes it appropriate for use in potable water distribution systems subject to low-lead compliance requirements.
Designed as an OEM-style replacement and standard trade fitting for copper plumbing systems requiring a transition from a solder cup connection to a male NPT threaded port.
Installation is performed by a licensed plumber or qualified pipefitter. Shut off and drain the affected water supply line before beginning any soldering work. Clean and flux both the copper tube and solder cup prior to sweating the joint per standard IPC and IFGC practices. Hand-tighten the male NPT end to the receiving female thread before applying a wrench, and use an appropriate thread sealant or tape on the NPT threads to ensure a leak-free seal.
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