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The MERIT BRASS SW3412D-0602 is a socket weld pipe reducer fitting designed to transition pipe runs from 3/8 inch to 1/8 inch in high-pressure piping systems. Constructed from 304 stainless steel, it carries a pressure rating of 3,000 psi, making it suitable for demanding fluid and gas distribution applications. The socket weld end connections on both sides allow the fitting to be fillet-welded directly onto pipe, creating a strong, leak-resistant joint. Plumbers, pipefitters, and mechanical contractors working on industrial or commercial piping systems are the primary installers of this type of fitting.
This reducer is used in piping systems where a reduction in line size is required between a 3/8 inch and 1/8 inch nominal pipe run. Typical applications include hydraulic lines, compressed air systems, steam lines, chemical process piping, and other high-pressure fluid distribution systems where stainless steel corrosion resistance and structural integrity are required. It is suited for both new construction and retrofit installations in industrial and commercial settings.
Designed as an OEM-style socket weld reducer for 3/8 inch by 1/8 inch nominal pipe in high-pressure stainless steel piping systems rated to 3,000 psi.
This fitting is installed by qualified pipefitters or plumbers following applicable welding codes and piping standards. Isolate and depressurize the system fully before removing any existing fittings or beginning socket weld work. Socket weld fittings require proper pipe insertion depth and fillet weld procedure per applicable code such as ASME B31.1 or B31.3. Do not apply thread sealants or mechanical clamps to socket weld connections.
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