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The ASC ENGINEERED SOLUTIONS 830053005 is a black steel close nipple used to create tight, short connections between threaded pipe fittings in gas, air, and fluid distribution systems. At 4 inches overall with a 2-7/8 inch thread-to-thread length, this close nipple provides a minimal standoff where a longer threaded section is not practical or where space is constrained. Fabricated from black steel, it is suited for natural gas, propane, compressed air, and similar non-potable piping applications. Plumbers, pipefitters, and HVAC technicians commonly specify close nipples when assembling tight manifold runs, burner connections, or valve trains.
This close nipple is used in residential and light commercial piping assemblies where black steel threaded fittings are required. Typical applications include gas supply lines to furnaces, boilers, water heaters, and rooftop units, as well as compressed air headers and industrial fluid systems. The short body makes it appropriate for reducing space between two female-threaded components without adding unnecessary pipe run length.
Designed as a standard threaded close nipple for use with black steel NPT fittings in gas, air, and fluid piping systems where a 4 inch close nipple is specified.
Installation should be performed by a licensed plumber, pipefitter, or HVAC technician in accordance with local codes and the IFGC or IPC as applicable. Shut off and depressurize the piping system completely before removing or installing any threaded fitting. Apply a listed pipe thread sealant or PTFE tape appropriate for the service medium to all male threads before assembly. Do not over-tighten threaded connections, as black steel fittings can crack if excessive force is applied.
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