Merit Brass 3412D-2006 Pipe Reducer 1-1/4x3/8 Fnpt 3000psi

Product Description

The MERIT BRASS 3412D-2006 is a stainless steel threaded pipe reducer designed to connect two female NPT pipe sections of different diameters in a single fitting. Constructed from 304/304L stainless steel, it handles a pressure rating of 3,000 psi, making it suitable for demanding fluid and gas distribution systems. The reducer transitions from a 1-1/4 inch female port to a 3/8 inch female port, allowing technicians to step down pipe size within a run. Licensed plumbers and pipefitters install this fitting in industrial, commercial, and mechanical system applications where corrosion resistance and high-pressure performance are required.

This reducer is used in piping systems that require a threaded size transition between 1-1/4 inch and 3/8 inch lines. The FNPT x FNPT end connections allow direct threading onto standard male NPT pipe ends. Its 304/304L stainless steel construction makes it appropriate for water, steam, and compatible chemical service lines in commercial and light industrial settings where stainless fittings are specified.

Key Features

• 304/304L stainless steel construction for corrosion resistance in wet and chemical service environments
• 3,000 psi pressure rating suitable for high-pressure piping runs
• FNPT x FNPT end connections for standard threaded assembly onto male NPT pipe
• Transitions from 1-1/4 inch to 3/8 inch pipe size in a single fitting
• Compact reducer format eliminates the need for bushings or adapters in most installations

Compatibility

Designed as an OEM-style threaded reducer for use in standard NPT piping systems requiring a 1-1/4 inch to 3/8 inch female-to-female size transition.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable IPC and ASME B1.20.1 threading standards. Depressurize and drain the line fully before removing or installing any threaded fittings. Apply an appropriate thread sealant or PTFE tape to the male NPT threads before assembly. Do not overtighten; tighten to hand-snug then use a pipe wrench for final make-up, stopping when the joint is leak-free and properly aligned.