Merit Brass 4548-300 Ss Pipe Nipple 3 in Sch 80 Gr 304

Product Description

The MERIT BRASS 4548-300 is a seamless stainless steel pipe nipple rated for Schedule 80 service in 3-inch pipe size. Manufactured from Grade 304/304L stainless steel, this nipple delivers corrosion resistance and structural integrity in demanding piping systems. The seamless construction eliminates weld-seam vulnerabilities, making it well-suited for applications where pressure integrity and material consistency are critical. Plumbers, pipefitters, and industrial maintenance technicians install this nipple as a standard threaded fitting in both new construction and replacement work. The 304/304L dual-grade designation confirms compatibility with both standard and low-carbon stainless requirements.

This nipple is used in commercial and industrial piping installations where stainless steel is specified for corrosion resistance. Schedule 80 wall thickness supports higher-pressure service compared to Schedule 40, making it appropriate for process piping, steam lines, chemical handling, and similar demanding environments. Residential plumbing applications that specify stainless fittings for water quality or code compliance also use this nipple. It is a direct-thread fitting that connects standard 3-inch NPT piping components.

Key Features

• Seamless construction eliminates weld-seam weak points for improved pressure integrity
• Grade 304/304L stainless steel provides strong corrosion resistance across a wide range of media
• Schedule 80 wall thickness supports elevated working pressures versus standard Schedule 40
• 3-inch pipe size with matching 3-inch thread size for direct NPT system integration
• Dual 304/304L grade designation meets both standard and low-carbon stainless specifications

Compatibility

Designed as an OEM-style replacement and new-installation fitting for 3-inch NPT stainless steel piping systems requiring Schedule 80 wall thickness and Grade 304 or 304L material.

Installation Notes

Installation is performed by licensed plumbers or certified pipefitters following applicable IPC or ASME B31 piping code requirements. Shut off and depressurize the line fully before removing or installing any threaded fitting. Use thread sealant or PTFE tape rated for the service media and pressure class. Avoid over-torquing threaded connections, as excessive force can crack fittings or damage threads.