

Ships same day if ordered by 12 pm
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 MUELLER STREAMLINE COADFTGFIP3 is a 3-inch copper female adapter fitting with a sweat (Ftg) inlet and a female iron pipe (FIP) threaded outlet. This adapter transitions a copper sweat connection to a female NPT threaded joint, making it a standard component in copper plumbing installations. It is sized at 3 inches and is used where a copper line must terminate or connect into a threaded pipe assembly. Licensed plumbers install this fitting in both new construction and retrofit plumbing projects across residential and light commercial systems.
This fitting is suited for potable water supply lines, hydronic heating systems, and general plumbing distribution where a copper-to-threaded-female transition is required. The Ftg end accepts a copper pipe or fitting for soldering, while the FIP end accepts a male-threaded pipe or valve. It is a common choice when connecting copper trunk lines to threaded valves, pumps, or equipment with male NPT inlets.
Designed as an OEM-style replacement and standard-use fitting for 3-inch copper plumbing systems requiring a sweat-to-female-threaded transition.
Installation should be performed by a licensed plumber in accordance with the International Plumbing Code (IPC) and applicable local codes. Shut off and depressurize the water supply and drain the line before soldering or making any connections. Clean and flux all copper mating surfaces thoroughly before applying heat to ensure a leak-free solder joint. Apply thread sealant or PTFE tape to the male NPT threads before engaging the FIP connection.
Thanks for subscribing!
This email has been registered!