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The BMI 4520 is a lead-free brass pipe nipple sized at 3/4 inch by 2 inches, designed for use in potable water supply lines, plumbing distribution systems, and general fluid transfer applications. Brass nipples are short-length threaded fittings used to connect two female-threaded pipe fittings or valves, extending a run or making a close connection between components. The lead-free construction meets regulatory requirements for drinking water contact, making this nipple suitable for installation in systems where NSF or lead-free compliance is required by code.
This nipple is used in residential and light commercial plumbing systems where a 3/4-inch threaded connection is needed. Common applications include water supply stub-outs, valve connections, manifold assemblies, and transitions between threaded components. Plumbers and pipefitters install this type of fitting in water distribution lines, boiler trim, irrigation headers, and similar systems. Its 2-inch length provides a short extension or connection point between fittings without adding significant run length.
Designed as an OEM-style replacement or standard-use fitting for 3/4-inch NPT threaded plumbing systems in residential and commercial applications.
Licensed plumbers should shut off the water supply and relieve system pressure before replacing or installing any threaded nipple. Apply thread sealant tape or paste to male NPT threads before assembly. Hand-tighten first, then use a pipe wrench to achieve a leak-free joint without overtightening, which can crack brass fittings. Follow local plumbing codes and IPC requirements for lead-free fittings in potable water systems.
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