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The MERIT BRASS 4012-4800 is a welded stainless steel pipe nipple designed for use in fluid and gas distribution systems where corrosion resistance and mechanical strength are critical. Manufactured from Grade 304/304L stainless steel, this nipple meets Schedule 40 wall thickness requirements, making it suitable for moderate-pressure piping applications. The 3/4-inch pipe size fits standard threaded fittings and pipe runs. Plumbers, pipefitters, and mechanical contractors install this type of nipple as a short connecting section between threaded fittings, valves, or equipment connections in both above-ground and corrosive-environment applications.
This pipe nipple is well suited for residential and light commercial plumbing, process piping, and mechanical systems where standard carbon steel would be susceptible to corrosion. Typical installations include chemical lines, water treatment systems, food-service plumbing, and marine or coastal environments where 304/304L stainless provides adequate resistance to oxidation and chloride exposure. The 3/4-inch Schedule 40 sizing aligns with common NPT threaded system configurations encountered in HVAC, plumbing, and industrial piping work.
Designed as an OEM-style replacement or standard component for 3/4-inch Schedule 40 NPT threaded piping systems using Grade 304 or 304L stainless steel pipe fittings.
Installation is performed by licensed plumbers or pipefitters following applicable IPC and local mechanical code requirements. Shut off and depressurize the system fully before removing or installing any threaded pipe component. Use an appropriate thread sealant or PTFE tape rated for the service fluid and temperature range. Do not overtighten threaded stainless connections, as galling can occur on stainless-to-stainless threads without proper anti-seize compound.
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