Merit Brass 4004-250 Ss Pipe Nipple 1/4 in Sch 40 304

Product Description

The MERIT BRASS 4004-250 is a stainless steel pipe nipple designed for use in fluid and gas piping systems where corrosion resistance and mechanical strength are required. Manufactured from Grade 304/304L stainless steel using a welded construction, this nipple carries a Schedule 40 wall thickness and a 1/4 inch pipe thread size. It is a standard fitting used by plumbers, pipefitters, and mechanical contractors to extend or connect piping runs. The 304/304L dual-grade designation makes it suitable for both standard and low-carbon applications, providing good weldability and resistance to intergranular corrosion after welding or heat exposure.

This pipe nipple is suited for residential and commercial plumbing, HVAC piping, industrial process lines, and similar applications where stainless steel fittings are specified. The 1/4 inch size is commonly found in instrument piping, chemical feed lines, compressed air systems, and low-flow fluid distribution. It fits standard NPT pipe systems at the 1/4 inch nominal pipe size. Installers working in corrosive or high-humidity environments often specify Grade 304 stainless over galvanized or black iron fittings to extend service life.

Key Features

• Grade 304/304L stainless steel construction for corrosion resistance in wet or chemically active environments
• Welded construction with Schedule 40 wall thickness for reliable pressure-rated performance
• 1/4 inch NPT thread size compatible with standard pipe fittings and valves
• Dual-grade 304/304L rating supports post-weld applications without sensitization concerns
• Lightweight at 0.076 pounds, minimizing added load in tight piping assemblies

Compatibility

Designed as an OEM-style replacement or new-installation fitting for standard NPT piping systems using 1/4 inch nominal pipe size at Schedule 40 wall thickness.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter following applicable IPC or ASME B31 piping codes. Shut off and depressurize the piping system completely before removing or installing any threaded fittings. Use a thread sealant or PTFE tape rated for stainless steel NPT connections to prevent galling and ensure a leak-free joint. Avoid using pipe wrenches that can deform the fitting walls on light-schedule stainless nipples.