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The MATCO-NORCA 331055400 is a galvanized steel pipe nipple measuring 4 inches in diameter by 9 inches in length. Pipe nipples are short threaded pipe sections used to connect two female-threaded fittings, valves, or equipment ports in a piping system. This nipple is constructed from galvanized steel, providing corrosion resistance suitable for water, air, and general-purpose piping applications. It is installed by plumbers and pipefitters in both residential and light commercial settings where a threaded galvanized connection is required.
This nipple is suited for use in plumbing supply lines, heating system piping, compressed air distribution, and similar applications where galvanized steel threaded fittings are specified. The 4-inch diameter and 9-inch length make it appropriate for larger-diameter piping runs where a short close or extension connection is needed between threaded components. It is an imported fitting, as noted in the product specifications.
Designed as a standard threaded galvanized steel pipe nipple for use with compatible 4-inch female-threaded galvanized or black iron fittings, valves, and equipment connections in general plumbing and mechanical piping systems.
Installation is performed by licensed plumbers or pipefitters following applicable IPC or local plumbing code requirements. Shut off the water supply or depressurize the system before making or breaking threaded connections. Use appropriate pipe thread sealant or PTFE tape on all threaded joints to ensure a leak-free connection. Avoid over-tightening, which can crack fittings or damage threads.
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