Merit Brass 4004-1800 Ss Pipe Nipple 1/4 in Sch 40 304

Product Description

The MERIT BRASS 4004-1800 is a welded stainless steel pipe nipple sized for 1/4-inch pipe in Schedule 40 wall thickness. Manufactured from Grade 304/304L stainless steel, this nipple delivers corrosion resistance suitable for demanding plumbing, HVAC, and industrial piping applications. Grade 304L low-carbon chemistry reduces the risk of carbide precipitation during welding, making it well suited for systems where weld-zone integrity is critical. Licensed plumbers, pipefitters, and mechanical contractors reach for this type of nipple when extending or connecting pipe runs in corrosive or sanitary service environments. The part weighs 0.61 pounds.

This pipe nipple is intended for use in residential and commercial piping systems where stainless steel is specified for corrosion resistance or sanitary requirements. Typical applications include water supply lines, process piping, instrumentation connections, and HVAC hydronic systems. Schedule 40 wall thickness is consistent with standard-service pressure ratings for 1/4-inch nominal pipe size. It is sold individually and is appropriate wherever a short threaded stainless nipple is required to complete or extend a piping assembly.

Key Features

• Grade 304/304L dual-certified stainless steel for corrosion resistance in wet and chemical-exposure environments
• Welded construction meeting Schedule 40 wall thickness requirements
• 1/4-inch nominal pipe size fits standard NPT fittings and valves
• Low-carbon 304L designation helps preserve corrosion resistance in weld zones
• Sold as a single unit with no minimum order restriction beyond one piece

Compatibility

Designed as an OEM-style replacement or new-installation component for 1/4-inch Schedule 40 stainless steel piping systems using standard NPT threaded connections.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC or IFGC guidelines for the specific service. Depressurize and isolate the piping section before threading the nipple into place. Use an appropriate thread sealant or PTFE tape rated for stainless steel and the service medium. Avoid over-torquing threaded stainless fittings, as galling can occur without proper anti-seize or sealant applied to the threads.