Nipples 330046004 Black Steel Pipe Nipple 3x4.5in Npt

Product Description

The NIPPLES 330046004 is a black steel pipe nipple designed for use in piping systems that require a reliable, threaded connection between fittings, valves, and equipment. Manufactured from ASTM A53 welded steel pipe, this nipple measures 3 inches in diameter by 4.5 inches in length and is threaded with National Pipe Taper (NPT) threads per ASME B1.20.1. The black finish provides a standard coating suitable for indoor gas, air, and general plumbing applications. Licensed plumbers, pipefitters, and HVAC technicians install this type of nipple as a short connecting piece between threaded components in both residential and light commercial systems.

This nipple is suited for use in gas distribution lines, steam systems, compressed air piping, and general-purpose fluid conveyance where carbon steel is an appropriate material. The 3-inch diameter and 4.5-inch length make it a common choice for close-coupled connections in larger-diameter piping runs. It conforms to Figure No. 339 and meets ASTM A733 dimensional standards, making it compatible with standard fittings of the same schedule and thread specification.

Key Features

• Material: ASTM A53 welded steel pipe for consistent wall integrity and thread engagement
• NPT threads per ASME B1.20.1 ensure compatibility with standard threaded fittings
• Dimensions conform to ASTM A733 for predictable fit in standard piping assemblies
• Black finish suitable for gas, air, steam, and general-purpose piping applications
• Figure No. 339 designation for straightforward cross-reference with standard nipple catalogs

Compatibility

Designed as an OEM-style replacement and standard-stock pipe nipple for use with NPT-threaded fittings, valves, and couplings in 3-inch diameter piping systems conforming to ASTM A733 dimensional standards.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes, including the International Plumbing Code (IPC) or International Fuel Gas Code (IFGC) where applicable. Shut off and depressurize the line before removing or installing any threaded pipe component. Apply an approved thread sealant or PTFE tape to the male threads before assembly, and tighten using pipe wrenches appropriate to the fitting size. Do not over-tighten NPT connections, as this can crack fittings or damage threads.

Technical Specifications

• Diameter: 3 inches
• Length: 4.5 inches
• Material: ASTM A53 Welded Steel Pipe
• Thread Type: NPT per ASME B1.20.1
• Dimensional Standard: ASTM A733
• Finish: Black
• Figure Number: 339

Standard Information

• Brand: NIPPLES
• Manufacturer Part Number: 330046004