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The MERIT BRASS 3412D-1604 is a threaded pipe reducer fitting manufactured from 304 and 304L stainless steel. It reduces a 1-inch female pipe thread connection down to a 1/4-inch female pipe thread connection, using an FNPT x FNPT end configuration. Rated to 3,000 psi, this fitting is built for demanding fluid and gas distribution systems where corrosion resistance and pressure integrity are required. Licensed plumbers and pipefitters install this type of fitting in industrial, commercial, and mechanical piping assemblies. It weighs 1.25 pounds and ships as a single unit.
This reducer is suited for use in stainless steel piping systems handling water, steam, oil, air, and compatible process media. The 304 and 304L material grades offer resistance to corrosion in a wide range of environments, making this fitting appropriate for food-grade, chemical, and general industrial process lines. It is typically installed where a main 1-inch branch line must be stepped down to a 1/4-inch instrumentation port, gauge connection, or auxiliary line.
Designed as a threaded reducer for standard NPT piping systems requiring a 1-inch to 1/4-inch female-to-female reduction in 304 or 304L stainless steel construction.
Installation should be performed by a licensed plumber or qualified pipefitter following applicable IPC and ASME B31 piping code requirements. Depressurize and isolate the line fully before removing any existing fittings or making new connections. Apply appropriate thread sealant or PTFE tape to the male NPT threads mating into this fitting. Do not overtighten threaded stainless steel fittings, as galling can occur and damage the threads permanently.
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