Nipples 330041807 Black Steel Pipe Nipple 2.5x4 in Npt

Product Description

The NIPPLES 330041807 is a black steel pipe nipple sized at 2.5 inches in diameter and 4 inches in length, manufactured from ASTM A53 welded steel pipe. It meets ASTM A733 dimensional standards and features NPT threading conforming to ASME B1.20.1. This nipple is designed for use in gas, water, and mechanical piping systems where a reliable, code-compliant threaded connection is required. Licensed plumbers, pipefitters, and HVAC technicians regularly install this type of fitting in both residential and light commercial applications.

This fitting is suited for use in gas distribution, steam, compressed air, and hydronic heating systems where black steel pipe is the specified material. The 2.5-inch diameter and 4-inch length make it a standard close-connection fitting used between valves, fittings, and equipment in piping assemblies. It is appropriate for applications where galvanized or zinc-coated finishes are not required or preferred.

Key Features

• Material: ASTM A53 welded steel pipe for dependable structural integrity
• Dimensions conform to ASTM A733 standards
• NPT threads per ASME B1.20.1 for compatibility with standard threaded pipe fittings
• Black finish suitable for non-corrosive interior piping applications
• Available in standard and extra heavy wall configurations
• Figure No. 339 designation for easy cross-referencing

Compatibility

Designed as a standard threaded black steel pipe nipple for use with NPT-threaded fittings, valves, and equipment in residential and commercial piping systems. Compatible with standard and extra heavy right and left nipple configurations available from 0.125 inches through 4 inches in diameter.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable codes, including the IPC and IFGC where relevant. Shut off and depressurize the supply line completely before removing or installing any threaded pipe fitting. Apply an appropriate pipe thread sealant or PTFE tape to male NPT threads before assembly. Do not over-tighten threaded connections, as this can damage threads or cause fitting failure.

Technical Specifications

• Material: ASTM A53 Welded Steel Pipe
• Diameter: 2.5 inches
• Length: 4 inches
• Thread Type: NPT per ASME B1.20.1
• Dimensional Standard: ASTM A733
• Finish: Black
• Figure Number: 339

Standard Information

• Brand: NIPPLES
• Manufacturer Part Number: 330041807