Merit Brass 6520-400 Stainless Steel Pipe Nipple 1-1/4 in

Product Description

The MERIT BRASS 6520-400 is a seamless stainless steel pipe nipple sized for 1-1/4 inch pipe, manufactured to Schedule 80 wall thickness and Grade 316/316L stainless steel. Schedule 80 provides greater wall thickness and pressure tolerance compared to standard Schedule 40 fittings, making this nipple suitable for demanding fluid and gas transfer applications. Grade 316/316L stainless offers superior corrosion resistance, particularly in chloride-rich and chemically aggressive environments. Licensed plumbers and pipefitters install this nipple as a threaded connector between pipe sections, valves, and fittings in industrial and commercial piping systems.

This pipe nipple is suited for use in commercial and industrial plumbing, process piping, chemical handling, and marine or coastal installations where corrosion resistance is critical. The seamless construction eliminates weld seams, reducing potential failure points under pressure or thermal cycling. It is appropriate for both high-pressure fluid lines and corrosive media service, and is commonly installed in mechanical rooms, equipment skids, and process systems requiring durable stainless pipe connections.

Key Features

• Grade 316/316L stainless steel construction for excellent corrosion and chemical resistance
• Seamless manufacturing eliminates weld seams for consistent wall integrity
• Schedule 80 wall thickness for increased pressure capacity
• 1-1/4 inch threaded pipe size for standard NPT fitting compatibility
• Suitable for aggressive media including chlorides and acidic environments

Compatibility

Designed as an OEM-style replacement or new-installation fitting compatible with standard 1-1/4 inch NPT threaded pipe systems using Schedule 80 fittings.

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 removing or installing any threaded pipe component. Apply an appropriate thread sealant or PTFE tape rated for the media being conveyed. Do not over-torque threaded connections, as stainless steel threads are susceptible to galling.