Nipples 330041609 Black Steel Pipe Nipple 2.5x3.5 in Npt

Product Description

The NIPPLES 330041609 is a domestic black steel pipe nipple sized at 2.5 inches by 3.5 inches, threaded to NPT standards per ASME B1.20.1. Manufactured from ASTM A53 welded steel pipe and dimensioned to ASTM A733, this nipple is built for reliable performance in gas, water, and general plumbing distribution systems. The black finish suits standard interior applications where galvanized or electroplated coatings are not required. Licensed plumbers and pipefitters install this fitting in both residential and light commercial piping assemblies.

This nipple is suited for use in residential and commercial piping systems where a short close nipple connection is needed between threaded fittings, valves, or equipment. Common applications include natural gas distribution, steam lines, water supply, and general-purpose pipe runs. The 2.5-inch nominal pipe diameter and 3.5-inch overall length make it a practical choice for tight-space installations within mechanical rooms, utility chases, and equipment hookups requiring a compact threaded connection.

Key Features

• Manufactured from ASTM A53 welded steel pipe for consistent wall thickness and strength
• Dimensions conform to ASTM A733 standard nipple specifications
• NPT threads per ASME B1.20.1 ensure leak-resistant, compatible connections with standard fittings
• Black finish suitable for gas and general-purpose plumbing applications
• Domestic manufacture supporting quality traceability for commercial and industrial jobs
• Available in Standard and Extra Heavy wall configurations in the broader product family

Compatibility

Designed as an OEM-style replacement or new-installation fitting for threaded steel piping systems using 2.5-inch nominal NPT connections in residential and commercial mechanical applications.

Installation Notes

Installation should be performed by a licensed plumber or pipefitter in accordance with applicable local codes and the International Plumbing Code or International Fuel Gas Code where relevant. Shut off and depressurize the line completely before removing or installing any threaded nipple. Apply an approved thread sealant or PTFE tape to male threads before makeup. Do not over-tighten threaded connections, as this can damage threads or cause cracking in mating fittings.

Technical Specifications

• Nominal Pipe Size: 2.5 inches
• Overall Length: 3.5 inches
• Material: ASTM A53 Welded Steel Pipe
• Dimension Standard: ASTM A733
• Thread Type: NPT per ASME B1.20.1
• Finish: Black
• Figure Number: 339

Standard Information

• Brand: NIPPLES
• Manufacturer Part Number: 330041609