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The ASC Engineered Solutions 318908605 is a black cast iron hex bushing designed to reduce pipe thread sizes in threaded piping systems. This fitting connects a larger female threaded pipe to a smaller male threaded pipe, allowing trades to transition between pipe sizes without additional fittings. The bushing measures 3.5 inches by 2 inches and weighs 2.42 pounds. The black coating provides corrosion resistance suited for indoor gas, water, and general-purpose piping applications. Plumbers, pipefitters, and mechanical contractors install this type of fitting during new construction and retrofit work on threaded iron pipe systems.
This hex bushing is used in residential and commercial plumbing and piping installations where a threaded size reduction is needed inline. The hex drive profile allows installation and removal with standard pipe wrenches or hex wrenches, making it practical in tight spaces. Typical applications include gas distribution headers, water supply lines, and hydronic heating systems where 3.5-inch to 2-inch reductions are required. Domestically manufactured, this fitting meets expectations for dimensional consistency and thread quality in professional trade applications.
Designed as an OEM-style replacement and standard hex bushing for threaded cast iron piping systems requiring a 3.5-inch to 2-inch reduction.
Installation is performed by licensed plumbers or pipefitters working on threaded iron pipe systems. Shut off and depressurize the piping system before removing or installing any threaded fitting. Apply appropriate pipe thread sealant or PTFE tape to male threads before assembly. Follow applicable local plumbing codes and IFGC requirements for gas piping applications.
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