Merit Brass 3612D-2008 Pipe Reducer 1-1/4x1/2 Fnpt 316SS

Product Description

The MERIT BRASS 3612D-2008 is a threaded pipe reducer fitting machined from 316/316L stainless steel. It reduces a 1-1/4 inch female NPT (FNPT) inlet down to a 1/2 inch female NPT outlet, making it a direct inline solution for downsizing pipe runs without additional adapters. Rated to 3,000 psi, this reducer is built for high-pressure systems where corrosion resistance is critical. The dual-grade 316/316L designation means the fitting meets both standard and low-carbon requirements, making it suitable for welding-adjacent assemblies and aggressive fluid environments. Licensed plumbers and pipefitters install this type of fitting in process, industrial, and commercial plumbing systems.

This reducer is used in applications where stainless steel corrosion resistance is required alongside high working pressure. Typical installations include chemical process lines, marine plumbing, food-grade piping, and commercial water systems where chloride exposure or sanitary standards rule out carbon steel or brass alternatives. The FNPT x FNPT configuration threads directly onto standard NPT pipe and fittings without special tooling.

Key Features

• 316/316L dual-grade stainless steel construction for corrosion resistance in harsh or chloride-rich environments
• 3,000 psi pressure rating suitable for high-pressure industrial and commercial pipe systems
• FNPT x FNPT end connections for standard NPT thread compatibility on both ends
• 1-1/4 inch to 1/2 inch reducer configuration for inline pipe size reduction
• 2.625 inch body length for compact inline installation

Compatibility

Designed as an OEM-style threaded reducer for standard NPT piping systems requiring a 1-1/4 inch to 1/2 inch FNPT-to-FNPT reduction in 316/316L stainless steel at up to 3,000 psi.

Installation Notes

Installation should be performed by a licensed plumber or qualified pipefitter in accordance with applicable IPC or ASME B31 piping codes. Shut off and depressurize the system completely before removing or installing any threaded fitting. Apply appropriate thread sealant or PTFE tape rated for the service fluid and pressure before threading the fitting into place. Do not over-torque stainless steel NPT threads, as galling can occur.