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The ASC Engineered Solutions 4309009304 is a black steel extra-heavy (XH) nipple run set used in threaded pipe assemblies for gas, steam, and industrial piping systems. The set spans a range of sizes from 3/4 inch to 6 inch and contains 11 individual nipple pieces, giving installers a ready assortment for building out threaded runs without sourcing each size separately. Domestically manufactured, the extra-heavy wall schedule provides added pressure and corrosion resistance compared to standard-weight nipples. Licensed plumbers and pipefitters are the primary installers for this type of fitting set.
This nipple run set is suited for residential and light commercial gas distribution, steam heating systems, and industrial process piping where threaded black steel fittings are required. The assortment covers 3/4 inch through 6 inch fitting sizes, making it practical for panel or truck-stock use. Installers working on boiler rooms, gas headers, or branch distribution assemblies will find the multi-piece run format reduces procurement time on the jobsite. All pieces carry the extra-heavy classification, consistent with higher-pressure or higher-temperature service environments.
Designed as an OEM-style replacement and jobsite-stock nipple run for threaded black steel piping systems using NPT connections in the 3/4 inch to 6 inch size range.
Installation is performed by licensed plumbers or pipefitters in accordance with applicable local plumbing and mechanical codes, including IFGC requirements for gas piping. Shut off and depressurize the piping system completely before removing or installing any threaded components. Apply an approved thread sealant or tape rated for the service medium before making up connections. Do not over-tighten threaded joints; follow accepted trade practice for the pipe size and material being worked.
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