1/4 inch x 2-1/2 inch Black Steel Nipple

1/4" x 2-1/2" Black Steel Pipe Nipple – Threaded Fitting for Gas and Hydronic Systems

The 1/4" x 2-1/2" Black Steel Nipple is designed for joining sections of threaded steel pipe in gas, hydronic, and low-pressure steam applications. Manufactured from welded black steel pipe to ASTM standards, it provides a robust, corrosion-resistant solution for mechanical connections requiring high structural integrity.

Threaded on both ends with NPT (National Pipe Taper) threads, this fitting ensures reliable engagement in steel piping systems. It is pressure-rated for use in non-potable applications and is suitable for service lines, manifold connections, and other mechanical piping assemblies where flame-resistant and high-temperature durability are essential.

Technical Advantages

• ASTM A53/A733 Compliance – Produced in accordance with industry standards for dimensional accuracy and wall thickness uniformity.
• Machined NPT Threads – Cut to precise tolerances to ensure tight thread engagement and minimize the risk of leaks in pressurized systems.
• Black Phosphate Coating – Provides added protection against oxidation during storage and handling; suitable for oil and gas systems.
• Versatile Use – Compatible with schedule 40 steel pipe systems; supports threaded valves, unions, and tees in both vertical and horizontal runs.
• High-Temperature Service – Performs reliably in applications exposed to elevated temperatures, including boiler systems and process lines.

Installation Requirements

Install using standard pipe wrenches and approved pipe thread sealants rated for the media in service. Avoid over-torquing to prevent thread distortion. Use in conjunction with black steel fittings or malleable iron fittings for optimal performance. Always pressure test the assembly in accordance with applicable codes and safety standards before commissioning.

Typical Applications

Used extensively in gas distribution systems, hydronic heating loops, compressed air systems, and industrial processing lines. Also common in mechanical room assemblies, equipment hookups, and utility piping where rigid, threaded connections are required.