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The AMERICAN GRANBY NLCBXFC34 is a PEX-to-FIP adapter designed to connect PEX tubing to female iron pipe threaded fittings. This adapter is sized at 1/2 inch PEX on one end and 3/4 inch FIP on the other, allowing a transition between two common pipe sizes in residential and light commercial plumbing systems. It is a single-unit fitting intended for use in hydronic, potable water, and radiant heating applications where PEX tubing meets threaded iron pipe connections. Licensed plumbers and pipefitters typically install this fitting during rough-in or retrofit work.
This adapter suits residential and light commercial plumbing installations where PEX distribution lines need to tie into existing threaded iron pipe networks. The 1/2 inch to 3/4 inch size combination is common in branch-line supply runs, manifold connections, and service transitions where pipe diameter changes are required alongside a PEX-to-threaded interface. It is sold as a single unit.
Designed as an OEM-style replacement or new-installation adapter for PEX plumbing systems requiring a 1/2 inch PEX to 3/4 inch female iron pipe threaded connection.
Installation is performed by a licensed plumber following applicable IPC or local plumbing code requirements. Shut off the water supply and relieve system pressure before installing or replacing any fitting. Apply appropriate thread sealant or PTFE tape to the FIP threads before making up the connection. Ensure the PEX side is secured with the correct crimp ring, clamp, or expansion fitting compatible with the PEX tubing type in use.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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