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The BMI USA 4571 is a lead-free brass threaded nipple designed for use in plumbing systems where reliable, code-compliant connections are required. Measuring 3/4 inch in diameter and 11 inches in length, this nipple serves as a straight connector between threaded fittings, valves, and other piping components. Brass construction provides corrosion resistance and durability in both hot and cold water service. The lead-free designation makes it suitable for potable water applications where local codes mandate lead-free materials. Licensed plumbers and pipefitters are the primary installers of this type of fitting.
This nipple is suited for residential and light commercial plumbing installations. Common applications include water supply lines, distribution manifolds, and fixture connections where a fixed-length threaded extension is needed. The 11-inch length makes it appropriate for longer offsets between fittings or when connecting components with greater spacing. Its standard NPT threading ensures compatibility with common pipe fittings and valves used in everyday plumbing work.
Designed as an OEM-style replacement and standard-fit nipple for 3/4 inch NPT threaded plumbing systems in residential and commercial applications.
Installation should be performed by a licensed plumber in accordance with local plumbing codes and the International Plumbing Code (IPC). Shut off the water supply and relieve system pressure before removing or installing any threaded fittings. Apply an appropriate thread sealant or PTFE tape to the male threads before assembly. Do not overtighten, as excessive torque can crack fittings or damage threads.
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