Merit Brass 2102-400 Brass Pipe Nipple 1/8 Npt 4 in

Product Description

The MERIT BRASS 2102-400 is a red brass close-pattern pipe nipple threaded on both ends to 1/8 inch NPT standards. Measuring 4 inches overall length (OAL) with a 1/8 inch outside diameter, this nipple provides a fully threaded connection suitable for low-pressure gas, water, and plumbing distribution lines. Red brass construction offers good corrosion resistance in a wide range of service fluids, making it a reliable choice for potable water, compressed air, and light industrial piping systems. Licensed plumbers and pipefitters install this component when joining threaded fittings, valves, or instruments in tight-clearance runs where a short rigid spool piece is needed.

This nipple is suited for residential and light commercial plumbing, HVAC condensate and gauge lines, and industrial instrumentation piping where 1/8 inch NPT connections are specified. Its compact 4 inch length fills short gaps between threaded fittings without requiring field-cut pipe. OSHA compliance is noted for the material and finish, making it appropriate for workplace plumbing and utility installations governed by occupational safety standards.

Key Features

• Red brass construction for corrosion resistance in water, air, and light fluid service
• Threaded on both ends to 1/8 inch NPT standard for universal fitting compatibility
• 4 inch OAL provides a fixed-length spool piece for close-clearance runs
• OSHA-compliant material and finish
• Lightweight at 0.08 pounds — minimal load on delicate instrument connections

Compatibility

Designed as a standard OEM-style replacement or new-installation nipple for any 1/8 inch NPT threaded piping system using red brass or compatible fittings.

Installation Notes

Installation is performed by licensed plumbers or pipefitters following applicable IPC and local plumbing code requirements. Shut off and depressurize the affected line before removing or installing any threaded nipple. Apply an appropriate thread sealant or PTFE tape to the NPT threads before makeup to prevent leaks. Do not overtighten threaded connections in brass fittings, as the material is softer than iron or steel and can be damaged by excessive torque.