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The VALUE COLLECTION 6RSB11/2*11/4 is a threaded pipe reducer fitting designed to transition between a 1-1/2 inch female pipe thread and a 1-1/4 inch female pipe thread in a single inline connection. Machined from 316 stainless steel, this fitting offers solid corrosion resistance in wet, chemical, or marine-adjacent environments. It carries a 150 psi pressure rating and uses FNPT x FNPT end connections on both sides, making it compatible with standard NPT-threaded pipe systems. Licensed plumbers and pipefitters install this type of fitting during new construction, repair, or retrofit work where pipe diameter changes are required along a run.
This reducer is suited for residential and light commercial plumbing systems, as well as process piping, fluid handling, and marine applications where stainless steel is specified for corrosion resistance. The FNPT x FNPT configuration accepts male-threaded pipe or fittings on each end. It is appropriate for water, mild chemical, and general-purpose fluid service within the rated pressure limits. The 316 stainless steel material grade provides improved resistance to chlorides and saline environments compared to 304-grade fittings.
Designed as an OEM-style replacement or new-installation fitting for standard NPT-threaded pipe systems requiring a 1-1/2 inch to 1-1/4 inch diameter reduction.
Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local plumbing codes and IPC guidelines. Shut off the water supply and relieve system pressure before disassembling any pipe joint. Apply an appropriate thread sealant or PTFE tape to the male threads before engagement. Do not over-torque the fitting, as stainless steel threads can gall under excessive force.
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