Merit Brass 6520-350 Ss Pipe Nipple 1-1/4 in Grade 316 Sch 80

Product Description

The MERIT BRASS 6520-350 is a seamless stainless steel pipe nipple designed for high-pressure and corrosion-resistant piping applications. Built to Schedule 80 wall thickness and manufactured from Grade 316/316L stainless steel, this nipple delivers superior resistance to chlorides, acids, and elevated temperatures compared to standard 304-grade fittings. The 1-1/4 inch pipe size makes it well suited for moderate to large flow piping runs. Licensed plumbers, pipefitters, and mechanical contractors install this type of fitting in process, industrial, and commercial systems where material integrity and pressure rating matter.

This pipe nipple is a standard threaded fitting used in plumbing, HVAC hydronic systems, chemical processing lines, marine applications, and food-service or sanitary piping where 316/316L stainless steel is specified. Schedule 80 construction provides greater wall thickness and higher pressure ratings than Schedule 40, making it appropriate for demanding service conditions. It is sold individually and is compatible with standard 1-1/4 inch NPT threaded fittings and pipe.

Key Features

• Grade 316/316L stainless steel construction for superior corrosion resistance including chloride and acidic environments
• Seamless construction eliminates weld seams, reducing potential leak points under pressure
• Schedule 80 wall thickness provides higher pressure rating compared to Schedule 40 pipe nipples
• 1-1/4 inch pipe size with standard NPT threads for compatibility with common threaded fittings
• Dual-certified 316/316L grade suitable for low-carbon applications requiring weld-adjacent corrosion resistance

Compatibility

Designed for use with standard 1-1/4 inch NPT threaded pipe fittings and valves in Schedule 80 stainless steel piping systems.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable codes such as the IPC or ASME B31 piping standards. Shut off and depressurize the system completely before removing or installing threaded pipe nipples. Use an appropriate thread sealant or PTFE tape rated for stainless steel and the intended service fluid. Avoid over-torquing threaded connections, which can gall stainless steel threads.