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The ASC Engineered Solutions 810085605 is a black malleable iron reducing coupling designed to connect two threaded pipe segments of different sizes in low-pressure gas, air, and general plumbing distribution systems. Sized at 1/2 inch x 1/4 inch, it steps down from a larger male or female threaded connection to a smaller one, making it a practical fitting for branch lines and service drops. The black coating provides corrosion resistance suitable for gas piping applications. Licensed plumbers and pipefitters are the primary installers of this fitting in both residential and light commercial settings.
This reducing coupling is used in threaded pipe assemblies where a transition between 1/2 inch and 1/4 inch pipe is required. Common applications include natural gas and propane distribution lines, compressed air systems, and general fluid handling runs where malleable iron fittings are specified. The fitting accepts standard NPT threads on both ends.
Designed as an OEM-style replacement or new-installation fitting for standard NPT threaded pipe assemblies requiring a 1/2 inch to 1/4 inch reducing connection in malleable iron.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and IFGC requirements for gas piping systems. Shut off gas or air supply and depressurize the line before disassembly or installation. Apply an approved thread sealant or PTFE tape to all threaded connections before assembly. Do not over-tighten, as malleable iron threads can crack under excessive torque.
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