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The NDL INDUSTRIES W1225 is a copper female adapter designed to connect a copper sweat (C) end to a female pipe thread (FPT) fitting. This adapter transitions a 1/2-inch copper tube connection to a 3/8-inch female pipe thread, making it a common solution for water supply lines, HVAC condensate connections, and general plumbing branch connections. Plumbers and pipefitters install this fitting wherever a sweat-soldered copper line must terminate into a threaded female port. The all-copper construction ensures compatibility with potable water systems and provides reliable, long-term corrosion resistance in wet environments.
This adapter is suited for residential and light commercial plumbing applications where a copper sweat connection transitions to a threaded female port. Typical installations include under-sink supply connections, boiler piping, hydronic systems, and HVAC equipment hookups that require a copper-to-threaded interface. The 1/2-inch C x 3/8-inch FPT configuration handles common size reductions encountered in fixture supply and equipment connection work. The fitting ships in a box quantity of 50 units, making it practical for stocking on service vehicles or in shop inventory.
Designed as an OEM-style replacement and general-use fitting for residential and commercial plumbing systems requiring a 1/2-inch copper sweat to 3/8-inch female pipe thread transition.
Installation requires a licensed plumber or qualified pipefitter in jurisdictions that enforce IPC or local plumbing codes. Shut off and drain the water supply before soldering. Use appropriate flux and lead-free solder per code requirements for potable water systems. Do not overtighten the FPT connection; use PTFE tape or pipe joint compound on the male threaded fitting that mates to this adapter.
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