Merit Brass 3414D-2002 Pipe Bushing 1-1/4x1/8 Ss 3000 Psi

Product Description

The MERIT BRASS 3414D-2002 is a threaded pipe bushing constructed from 304/304L stainless steel, designed to reduce a 1-1/4 inch female port down to a 1/8 inch male connection. It features MNPT x FNPT end connections and carries a pressure rating of 3,000 psi, making it suitable for demanding fluid and gas piping systems. This fitting is a standard hex bushing used by plumbers, pipefitters, and mechanical contractors to adapt mismatched pipe sizes within a run. The dual-grade 304/304L stainless steel construction offers corrosion resistance in wet, chemical-adjacent, or sanitary service environments.

This bushing is appropriate for use in residential and commercial plumbing, industrial process piping, and mechanical systems where a threaded size reduction is required. It is commonly installed in compressed air lines, water supply headers, instrumentation taps, and hydraulic distribution manifolds. The MNPT x FNPT configuration allows it to thread directly into a female-threaded fitting or valve body while accepting a smaller male-threaded pipe or nipple on the outlet side.

Key Features

• 304/304L stainless steel construction for corrosion resistance in wet and process environments
• 3,000 psi pressure rating suitable for high-pressure piping applications
• MNPT x FNPT threaded end connections for tool-standard installation
• 1-1/4 inch to 1/8 inch size reduction in a single fitting
• Threaded connection type — no welding or pressing required

Compatibility

Designed as an OEM-style threaded pipe bushing compatible with standard NPT-threaded piping systems requiring a 1-1/4 inch to 1/8 inch size reduction in stainless steel service.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC or IFGC requirements for threaded metallic fittings. Shut down system pressure and drain the line before removing or installing any threaded fitting. Apply appropriate thread sealant or PTFE tape to the male threads per the sealant manufacturer and system fluid compatibility requirements. Do not over-torque stainless steel fittings, as galling on NPT threads can occur — use a calibrated pipe wrench and standard trade practice for the pipe size.