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The ASC ENGINEERED SOLUTIONS 8700159208 is a 3/8-inch malleable black iron square head pipe plug designed to close off the end of a threaded pipe or fitting. The hollow core construction is standard for regular-pattern plugs of this type. Malleable iron provides the toughness needed to handle vibration and thermal cycling common in piping systems. This plug meets Federal Specification WW-P-471-B, ANSI B-16.14 dimensional standards, and ANSI B-2.1 pipe thread requirements. Plumbers, pipefitters, and mechanical contractors install this type of fitting as part of routine pipe assembly and system capping work.
This plug is suited for use in residential and commercial piping applications where a threaded pipe end must be sealed. It is commonly installed in gas, water, and general-purpose black iron piping systems. The square head profile accepts a wrench for positive tightening without the risk of rounding that can occur with smaller recessed-drive plugs. Sold individually, it is a standard component in mechanical and plumbing rough-in work.
Designed as an OEM-style replacement or new-installation fitting for 3/8-inch NPT threaded black iron piping systems.
Installation is typically performed by licensed plumbers or pipefitters working under IPC or IFGC code requirements depending on the service. Shut off system pressure and verify the line is depressurized before removing or installing any threaded pipe fitting. Apply an appropriate thread sealant or PTFE tape to the male threads before installation. Tighten with a wrench to achieve a leak-free seal without over-torquing the fitting.
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