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The MUELLER STREAMLINE 584-000r is a Schedule 40 black steel close nipple designed for use in plumbing, gas, oil, and steam piping systems. Manufactured to ASTM A733/A53 and ANSI/ASME B1.20.1 standards, this nipple features male threaded connections on both ends and a welded construction for reliable, long-term performance. At 1.375 inches in overall length and sized at 3/4 inch on both ends, it fills tight spaces where a standard hex nipple will not fit. Licensed plumbers and pipefitters install this fitting in both residential and commercial applications where a close-coupled connection between two threaded fittings is required.
This close nipple is suited for plumbing, OEM assemblies, oil, gas, and steam service lines. The black finish and welded steel construction make it appropriate for above-ground and buried-service applications where the system design calls for Schedule 40 fittings. It ships in an inner pack of 11 units, making it practical for stocking a service van or supply room. Installers working on gas distribution or steam systems commonly specify this type of fitting when a close-coupled connection is required between two threaded ports.
Designed as an OEM-style replacement or new-installation fitting for 3/4 inch male-threaded Schedule 40 black steel piping systems used in plumbing, gas, oil, and steam applications.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, IFGC, or IPC requirements. Shut off and depressurize the piping system fully before removing or installing any threaded fitting. Apply an appropriate pipe thread sealant or PTFE tape rated for the intended service medium before making up the connection. Do not over-tighten threaded connections, as this can damage threads or crack adjacent fittings.
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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