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The MERIT BRASS SW3411HD-06 is a 3/8 inch pipe half coupling manufactured from 304 stainless steel, rated for service up to 3,000 psi. A half coupling is a short fitting used to branch off a pipe run or cap a weld connection on one end. Both ends use socket weld connections, making this fitting appropriate for high-pressure piping systems where threaded joints are not acceptable. Licensed pipefitters and plumbers use this fitting in industrial, commercial, and mechanical piping applications where corrosion resistance and pressure integrity are required. The 304 stainless steel construction provides reliable performance in a range of service environments.
This half coupling is suited for socket weld piping systems in industrial plants, mechanical rooms, and process piping installations. It is commonly installed where a 3/8 inch branch connection or stub-out is needed on a larger pipe run. Applications include steam, water, oil, and gas service lines operating at elevated pressure. The socket weld design allows the pipe end to be inserted into the fitting socket before fillet welding, producing a smooth bore and strong joint.
Designed as an OEM-style replacement or new-installation fitting for 3/8 inch socket weld piping systems using Class 3000 fittings per standard pipe fitting specifications.
Installation requires a qualified welder or licensed pipefitter familiar with socket weld fitting procedures. Depressurize and drain the piping system fully before cutting into any existing line. Follow applicable codes including ASME B16.11 for socket weld fittings and the applicable sections of the International Fuel Gas Code or International Plumbing Code for the service type. Do not use socket weld fittings in services that prohibit crevice corrosion risk without confirming suitability with the system engineer.
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