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The MERIT BRASS SW3412D-0402 is a 304 stainless steel socket weld pipe reducer designed for high-pressure piping systems where a transition from a 1/4-inch to a 1/8-inch line is required. Rated at 3,000 psi, this fitting handles demanding service conditions in industrial, mechanical, and process piping applications. The threaded socket weld end connections provide a secure, leak-resistant joint suitable for permanent installations. Weighing 0.19 pounds, the compact form factor suits tight installations without sacrificing pressure integrity. Plumbers, pipefitters, and mechanical contractors working on high-pressure systems rely on this style of reducer for reliable, code-compliant connections.
This reducer is suited for residential and commercial high-pressure piping applications where a line size reduction from 1/4 inch to 1/8 inch is needed. Typical installation scenarios include hydraulic lines, steam systems, compressed air manifolds, and chemical process piping where 304 stainless steel is specified for corrosion resistance. The socket weld configuration makes it a standard choice in fabricated piping assemblies and instrumentation connections requiring a permanent, pressure-rated joint.
Designed as an OEM-style replacement or new-installation fitting for 1/4 x 1/8 inch socket weld high-pressure piping assemblies specifying 304 stainless steel reducers rated at 3,000 psi.
Installation should be performed by a licensed pipefitter or plumber in accordance with applicable mechanical and piping codes such as ASME B16.11 and OSHA pressure system guidelines. Depressurize and isolate the line completely before disassembling or installing any fitting. Socket weld fittings require proper fit-up and welding by a qualified welder; do not use pipe dope or thread sealant in place of the required weld joint. Inspect the fitting for cracks or defects before installation in any pressurized service.
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