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The ANDERSON METALS -11099-11 is a red brass pipe nipple designed for use in threaded pipe assemblies across plumbing, HVAC, and general fluid-handling systems. Threaded on both ends with NPT (National Pipe Taper) thread form, this nipple provides a reliable, pressure-rated connection between two female-threaded fittings or components. At 4.5 inches overall length, it suits close-quarter installations where a standard hex nipple is too short and a long nipple would be excessive. Red brass construction offers solid corrosion resistance in water service applications. This part is typically installed by licensed plumbers and pipefitters working on potable water, hydronic heating, or similar low-pressure fluid systems.
This nipple fits standard NPT-threaded plumbing and HVAC applications in both residential and light commercial settings. Common use cases include connecting valves, gauges, unions, and other threaded fittings in copper alloy or iron pipe systems. The 4.5-inch length fills the gap between close and standard nipple sizes, making it a practical choice for riser assemblies, equipment connections, and retrofit work where exact spool length matters. No specific model or system compatibility is listed in product data for this item.
Designed as an OEM-style replacement or service nipple for any standard NPT-threaded pipe assembly requiring a 4.5-inch red brass nipple in plumbing or HVAC applications.
Installation is performed by a licensed plumber or pipefitter. Shut off water supply and relieve system pressure before removing or installing any threaded pipe component. Apply an approved thread sealant or PTFE tape to NPT threads before assembly; hand-tighten first, then wrench-tighten to avoid over-stressing the fitting. Work must comply with applicable local plumbing codes and IPC requirements.
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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