2 inch x 3/4 inch Black Iron Reducing Coupling Female x Female

2 Inch x 3/4 Inch Black Iron Reducing Coupling – Female x Female

The 2 inch x 3/4 inch black iron reducing coupling is a threaded fitting used to transition between two pipe sizes in gas, oil, steam, and water systems. Manufactured for compatibility with standard Schedule 40 and Schedule 80 steel pipe, this coupling features NPT threaded ends for secure mechanical connections without welding or soldering.

Product Advantages

• Threaded FPT x FPT Connection: National Pipe Taper (NPT) threads conform to ANSI/ASME B1.20.1 for reliable sealing in gas and fluid systems.
• One-Piece Cast Construction: Seamless body ensures high mechanical strength under thermal and mechanical stress.
• Pressure Rated: Suitable for working pressures up to 150 psi for steam and 300 psi for non-shock water and oil (when properly installed).
• Black Coated Finish: Mill coating helps prevent oxidation prior to installation; not intended for potable water use.

Material Specification

• Material: ASTM A-197 malleable black iron
• Size: 2 inch female x 3/4 inch female
• End Connections: Threaded (NPT) female x female
• Finish: Black oxide-coated for dry pipe and gas line protection
• Compliance: Meets ANSI B16.3 and ASTM A197/A197M standards

Installation Guidelines

For optimal performance, apply a compatible thread sealant (pipe dope or PTFE tape) to all male threads prior to tightening. Use pipe wrenches to achieve full engagement without over-torquing. Threaded iron fittings are intended for mechanical assembly and should not be welded. Verify compatibility with adjacent pipe and system pressure requirements before installation.

Typical Applications

• Fuel gas piping (natural gas, propane)
• Low-pressure steam and condensate return lines
• Closed-loop hydronic heating systems
• Compressed air and industrial process piping

Technical Note

Reducing couplings are often preferred over bushings when a stronger mechanical joint is needed across differing pipe diameters. They provide superior structural integrity in situations where vibration or thermal expansion is a concern.

The 2 inch x 3/4 inch black iron reducing coupling is an essential component for transition points in steel piping systems. Built to meet industry performance standards, it supports pressure integrity and code-compliant installation across a wide range of mechanical applications.