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The RWC 104 is a black steel pipe nipple manufactured to Schedule 40 wall thickness. It measures 3 inches in diameter by 3.5 inches in length, making it a compact close-to-short extension fitting used to connect threaded pipe sections, valves, and fittings. Black steel nipples are standard components in gas distribution, fire suppression, and industrial piping systems. Licensed plumbers, pipefitters, and gas fitters select this type of fitting when joining threaded iron pipe assemblies in both residential and light commercial applications.
This nipple is suited for use in dry piping systems including natural gas, propane, compressed air, and steam lines where black steel is an acceptable material per local code. The 3 inch by 3.5 inch size fills a common need in gas manifold work, mechanical room rough-ins, and industrial process piping. It threads directly onto standard NPT fittings and valves without additional adapters in most applications.
Designed as an OEM-style replacement or new-installation fitting for Schedule 40 black steel threaded pipe systems using 3 inch nominal NPT connections.
Installation should be performed by a licensed plumber, pipefitter, or gas fitter in accordance with applicable local mechanical and fuel gas codes such as the IFGC or IPC. Shut off all gas or fluid supply and depressurize the line before threading or removing any fittings. Apply an approved pipe thread sealant or tape rated for the intended service medium before assembly. Do not use black steel nipples in potable water systems where corrosion resistance requirements apply.
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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