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The ASC Engineered Solutions 390028629 is a grooved concentric reducer fitting designed for use in grooved piping systems. It transitions from a 4-inch pipe to a 2-inch pipe while maintaining a centered, concentric alignment between both pipe axes. Constructed from ductile iron with a painted exterior finish, this reducer provides corrosion resistance and durability in demanding mechanical piping applications. It is installed by licensed pipefitters, plumbers, and mechanical contractors working on hydronic, fire protection, or industrial fluid systems where grooved-end pipe connections are specified.
This reducer is suited for commercial and industrial piping installations where grooved mechanical couplings are the joining method of choice. Typical applications include HVAC hydronic systems, fire sprinkler mains, and process piping where reducing the pipe diameter is required at branch transitions or equipment connections. The concentric design keeps the pipe centerlines aligned, which is preferred in horizontal runs where uniform flow characteristics are a priority.
Designed as an OEM-style grooved fitting for use with standard grooved mechanical coupling systems in commercial and industrial piping applications.
Installation should be performed by a qualified pipefitter or licensed plumber. Depressurize and drain the piping system fully before removing or installing any grooved fittings. Verify that pipe ends are properly grooved to the correct groove dimensions required by the coupling manufacturer before assembly. Follow applicable mechanical codes, including NFPA 13 for fire protection systems or local plumbing codes for hydronic and process piping applications.
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