Merit Brass 6520-300 Ss Pipe Nipple 1-1/4 in Sch 80 316L

Product Description

The MERIT BRASS 6520-300 is a seamless stainless steel pipe nipple sized for 1-1/4 inch pipe, manufactured from Grade 316/316L stainless steel to Schedule 80 wall thickness. The Schedule 80 designation means a heavier wall than standard, making this nipple suitable for higher-pressure or higher-temperature service. Grade 316/316L offers superior corrosion resistance compared to 304-series stainless, particularly in chloride-bearing or mildly acidic environments. Plumbers, pipefitters, and mechanical contractors use this type of fitting to extend or connect threaded stainless steel piping runs in demanding service conditions.

This nipple is appropriate for commercial and industrial plumbing, process piping, HVAC hydronic systems, and marine or coastal installations where corrosion resistance is a priority. The 1-1/4 inch thread size fits standard NPT-threaded valves, couplings, and fittings of the same nominal size. Its seamless construction eliminates a weld seam, which reduces potential failure points under cyclic stress or pressure.

Key Features

• Grade 316/316L stainless steel construction for enhanced corrosion and chloride resistance
• Seamless manufacturing eliminates weld-seam vulnerabilities under pressure or stress
• Schedule 80 heavy wall for elevated-pressure applications
• 1-1/4 inch NPT thread size for standard threaded fittings and valves
• Suitable for chemical, marine, HVAC, and industrial plumbing service

Compatibility

Designed as an OEM-style replacement or new-installation component for 1-1/4 inch NPT threaded stainless steel piping systems requiring Schedule 80 wall thickness and Grade 316/316L material.

Installation Notes

Installation is performed by licensed plumbers or pipefitters. Shut off system pressure and drain the line before removing or installing threaded nipples. Apply an appropriate thread sealant or PTFE tape rated for the service fluid before threading into fittings. Follow IPC and applicable local codes for pressure testing after installation.