2-1/2 inch x 2 inch Black Iron Bushing

2-1/2 inch x 2 inch Black Malleable Iron Bushing – Threaded Reducing Fitting

The 2-1/2 inch x 2 inch black malleable iron bushing is designed for threaded pipe systems requiring a reduction in nominal diameter. It features male NPT threads on the larger end and female NPT threads on the smaller end, enabling secure transitions between different pipe sizes within gas, water, and low-pressure steam applications.

Manufactured in accordance with ASTM A197 and ASME B16.3 standards, this fitting is pressure-rated and suitable for mechanical and plumbing systems that require robust, code-compliant components. The black finish indicates that it is intended for use in systems not involving potable water, including fuel gas and non-corrosive media distribution lines.

Specifications

• Size: 2-1/2 inch male NPT x 2 inch female NPT
• Material: Black malleable iron (ASTM A197)
• Thread Standard: ANSI B1.20.1 (NPT)
• Pressure Rating: Class 150 (per ASME B16.3)
• Finish: Black oxide (non-galvanized)

Usage and Applications

Commonly used in threaded steel or iron pipe systems for:

• • Fuel gas distribution networks (natural gas or propane)
• • Low-pressure hydronic heating and steam
• • Air compressor and mechanical piping systems
• • Transitioning between dissimilar pipe diameters in manifolds and headers

Installation Considerations

Use of appropriate thread sealant or PTFE tape is required to ensure a pressure-tight connection. Threads must be clean and aligned to prevent galling or cross-threading. Fittings should be torqued using pipe wrenches with care to avoid over-tightening, which may compromise seal integrity or damage mating threads. Installation must follow applicable mechanical or plumbing code requirements.

Material Note

Black malleable iron bushings are commonly specified in non-potable systems due to their compressive strength, machinability, and thermal resistance. They are not intended for corrosive or potable water service unless further treated or specified with a protective coating.