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The ASC Engineered Solutions 390007409 is a Gruvlok 7005-E Roughneck plain end coupling designed for joining plain-end pipe in demanding mechanical piping systems. Built from ductile iron, this coupling delivers the structural integrity required in commercial and industrial installations where grooved-end fittings are not present on the pipe. At 4 inches in size and 13.97 pounds, it is sized for mid-range piping runs commonly found in fire protection, HVAC hydronic, and industrial process piping. Licensed plumbers, pipefitters, and mechanical contractors are the primary installers of this type of coupling.
This coupling is intended for use in systems where plain-end pipe must be mechanically joined without threading or welding. It is suited for commercial and industrial applications including HVAC hydronic piping, fire suppression systems, and general mechanical piping where a rigid or flexible grooved coupling system is being used. The 4-inch size fits standard 4-inch nominal pipe and integrates with the Gruvlok 7005-E product line from ASC Engineered Solutions.
Designed as an OEM-style mechanical coupling for use with 4-inch nominal plain-end pipe in grooved piping systems.
Installation is typically performed by licensed pipefitters or plumbers following applicable mechanical codes such as ASME B31.9 for building services piping. Depressurize and isolate the piping system fully before disassembling or installing any coupling. Ensure pipe ends are clean, free of burrs, and within the dimensional tolerances specified for plain-end coupling use. Follow the manufacturer torque sequence for housing bolts to achieve an even, leak-free seal.
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