Merit Brass 3412D-2008 Pipe Reducer 1-1/4x1/2 Fnpt 3000 Psi

Product Description

The MERIT BRASS 3412D-2008 is a threaded pipe reducer fitting designed to connect piping of two different diameters in industrial and commercial fluid systems. Manufactured from 304/304L stainless steel, it accepts female NPT connections on both ends, with a 1-1/4 inch inlet and a 1/2 inch outlet. Rated to 3,000 psi, this reducer is suited for high-pressure applications where corrosion resistance and mechanical strength are required. Licensed plumbers and pipefitters install this fitting in process piping, compressed air, and hydraulic or steam distribution systems.

This reducer is a standard choice for reducing line size within threaded pipe assemblies in both residential and commercial settings. The FNPT x FNPT configuration allows direct threaded engagement on both ends without the need for additional adapters. Its 304/304L stainless steel construction makes it appropriate for corrosive environments, including chemical processing, food service, and marine-adjacent utility piping, where carbon steel fittings are not suitable.

Key Features

• 304/304L stainless steel construction for corrosion resistance in demanding environments
• 3,000 psi pressure rating suitable for high-pressure piping systems
• FNPT x FNPT threaded ends for straightforward installation with standard pipe threads
• Reduces from 1-1/4 inch to 1/2 inch to match common line-size transitions
• Compact reducer profile keeps system footprint tight in confined piping runs

Compatibility

Designed as an OEM-style replacement or new-installation fitting for threaded pipe systems using 1-1/4 inch to 1/2 inch FNPT connections in high-pressure fluid or gas service.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable IPC or ASME B31 piping codes. Shut off and depressurize the system completely before disassembling any threaded connections. Apply appropriate thread sealant or PTFE tape to the male threads engaging this fitting, following the sealant manufacturer's instructions for the specific service fluid. Do not over-torque threaded stainless steel fittings, as galling can damage the threads and compromise the seal.