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The MERIT BRASS SW3480D-1606 is a socket weld pipe insert fitting designed for high-pressure piping systems requiring a reliable, corrosion-resistant connection. Constructed from 304 stainless steel, this insert transitions from a 1-inch to a 3/8-inch line and is rated to 3,000 psi. The socket weld x socket weld end connections allow it to be permanently joined by welding, making it well suited for applications where leak-free performance under sustained pressure is critical. Licensed plumbers, pipefitters, and mechanical contractors working on industrial or commercial piping systems are the primary installers of this type of fitting.
This fitting is used in fluid handling and process piping systems where a reduction in line size is needed and welded connections are required or preferred over threaded alternatives. Typical applications include water, steam, hydraulic, and chemical service lines operating at elevated pressures in commercial mechanical rooms, industrial plants, and process facilities. The 304 stainless steel construction provides solid resistance to corrosion in a wide range of service environments.
Designed as an OEM-style replacement or new-installation fitting for high-pressure stainless steel socket weld piping systems in commercial and industrial applications.
Installation should be performed by a licensed pipefitter or plumber in accordance with applicable codes, including ASME B31.1 or B31.3 where applicable. Shut down and depressurize the piping system completely before cutting into the line or positioning the fitting. Socket weld fittings require a qualified welder to complete the joint; do not use mechanical fastening as a substitute for the specified weld connection. Inspect the socket and pipe end for burrs or debris before assembly to ensure a proper weld fit-up.
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