

Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The NIBCO INC W01040T is a lead-free copper female adapter designed to transition a solder connection to a female NPT threaded connection. The fitting features a 1/2 inch solder cup (C) inlet and a 3/4 inch female NPT (F) outlet, making it the standard solution when sweat-fit copper tubing meets a threaded pipe or valve. Licensed plumbers and pipefitters use this fitting in water supply systems where copper piping transitions to threaded components such as valves, water heaters, or fixture supply risers. The lead-free construction meets modern potable water compliance requirements.
This adapter is suited for residential and light commercial plumbing applications where a copper sweat connection must interface with a female-threaded fitting, valve, or equipment port. Typical installations include water heater connections, boiler supply and return piping, and branch line terminations at shutoff valves or fixture stops. The fitting is sold in a package quantity of 20 units, making it practical for service trucks or job-site stock.
Designed as an OEM-style replacement and standard fitting for copper sweat-to-NPT transition applications in residential and commercial potable water plumbing systems.
Installation is performed by a licensed plumber in accordance with the International Plumbing Code (IPC) and applicable local codes. Shut off and drain the supply line before soldering. Use appropriate flux and lead-free solder when sweating the cup end onto the copper tube. Apply thread sealant tape or compound to the male NPT threads being inserted into the female fitting before making up the threaded joint.
Thanks for subscribing!
This email has been registered!