1/8 inch x 1-1/2 inch Black Steel Nipple

1/8” x 1-1/2” Black Steel Pipe Nipple – Threaded Connector for Low-Pressure Applications

The 1/8” x 1-1/2” Black Steel Nipple is a Schedule 40 pipe segment with NPT threads on both ends, designed for joining threaded fittings or extending short pipe runs in mechanical systems. Manufactured from black welded steel pipe, this component is suitable for use in non-potable water, air, gas, and oil applications where corrosion from moisture is not a primary concern.

This nipple meets dimensional tolerances consistent with ANSI/ASME B1.20.1 thread standards and is commonly installed in environments requiring moderate pressure containment and mechanical strength. It is typically used in heating systems, compressed air lines, and general-purpose fluid transfer in industrial and commercial systems.

Product Specifications

• Nominal Size: 1/8" NPT x 1-1/2" overall length
• Material: Welded black steel pipe per ASTM A53 Grade A or equivalent
• Wall Thickness: Schedule 40
• Thread Type: NPT – ANSI B1.20.1 compliant
• Finish: Black oxide coating

Installation Guidelines

Threads must be clean and undamaged prior to installation. Apply an appropriate thread sealant or PTFE tape to ensure a leak-resistant joint. Tighten with standard pipe wrenches, avoiding excessive torque to preserve thread integrity. For gas and fuel installations, perform pressure testing in accordance with local code requirements.

Typical Applications

This nipple is commonly used in low- to moderate-pressure piping systems, including:

• Natural gas distribution lines
• Hydronic heating loops
• Compressed air systems
• Fuel oil piping and lubrication systems

Its compact length makes it suitable for confined installations or as a coupling extension between close-proximity components.

Material Performance

Black steel offers high tensile strength and is suited for use in dry environments. The black oxide finish provides minimal corrosion resistance and is not intended for contact with potable water or corrosive fluids. For increased durability in corrosive settings, galvanized or coated alternatives are recommended.

The 1/8” x 1-1/2” Black Steel Nipple is a standard component for mechanical system installations requiring short-length threaded connections. Its compliance with thread and pressure-class specifications ensures consistent performance in properly sealed and supported systems.