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The MERIT BRASS SW3480D-0804 is a 1/2 x 1/4 inch reducing pipe insert fitting constructed from 304 stainless steel. It uses a socket weld by socket weld end connection with threaded engagement and is rated to 3,000 psi. This type of insert fitting is used to reinforce or reduce flow paths within a piping assembly, maintaining structural integrity at the joint under pressure. Licensed plumbers and pipefitters install this fitting in process piping, fluid handling systems, and mechanical utility lines where corrosion resistance and pressure capacity are required.
This fitting is suited for commercial and industrial piping applications where stainless steel construction is specified for resistance to corrosion, high moisture environments, or chemical exposure. The 1/2 x 1/4 inch reducing configuration makes it appropriate for transitions between pipe sizes within a socket weld assembly. It is commonly used in hydronic systems, compressed fluid lines, and instrumentation piping where maintaining tight, leak-resistant connections at elevated pressure is a priority.
Designed as an OEM-style replacement or new-installation component for socket weld piping assemblies requiring a 1/2 x 1/4 inch stainless steel reducing insert fitting rated at 3,000 psi.
Installation should be performed by a licensed plumber or qualified pipefitter in accordance with applicable codes such as ASME B16.11 for socket weld fittings and the International Plumbing Code. Depressurize and isolate the line completely before removing or installing any fitting. Verify that socket weld dimensions and pipe schedules are compatible with the existing assembly before welding. Do not exceed the 3,000 psi pressure rating of this fitting in service.
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