1-1/4 inch x 1 inch Black Iron 90 Degree Reducing Elbow Female x Female

1-1/4 inch x 1 inch Black Iron 90° Reducing Elbow – Threaded Fitting for Gas, Steam, and Air Systems

The 1-1/4 inch x 1 inch Black Iron 90° Reducing Elbow is a malleable iron fitting used to facilitate a directional change and size reduction in threaded piping systems. Manufactured in accordance with ANSI and ASTM standards, this elbow features female NPT threads and is suitable for use in non-potable systems including gas distribution, steam, oil, and compressed air networks.

This fitting is hot-dip galvanized on the exterior surface to reduce scale buildup during transport and storage. Its reducing design allows for a smooth transition from a 1-1/4 inch main run to a 1 inch branch while maintaining flow alignment at a 90-degree angle. Pressure ratings are consistent with Schedule 40 pipe applications, subject to system temperature and medium.

Product Specifications

• Material: Malleable cast iron, black finish (ASTM A197)
• Connection Type: Female NPT x Female NPT (ANSI/ASME B1.20.1)
• Configuration: 90° reducing elbow, 1-1/4 inch inlet x 1 inch outlet
• Standard Compliance: ASME B16.3 (fittings), ASTM A153 (zinc coating, if galvanized)
• Typical Pressure Rating: Up to 150 psi for steam and 300 psi for air/water/oil at ambient temperatures (verify per system design)

Installation Considerations

Use PTFE thread sealant tape or pipe joint compound compatible with the system medium. Avoid over-torquing to prevent thread distortion or cracking. Fitting should be torqued evenly to ensure uniform seating on both threads. Suitable for above-ground installations; not for use with potable water unless specifically approved and coated accordingly.

Application Scope

• Natural gas and propane systems
• Steam and return lines
• Compressed air or inert gas distribution
• Non-potable water and industrial fluid piping
• HVAC system component transitions

Material Note

Black iron (malleable iron) fittings are preferred in systems requiring mechanical strength, resistance to deformation, and consistent thread engagement under variable loads. The reduced branch maintains system volume while adapting to smaller downstream connections without the need for bushings or multiple fittings.

The 1-1/4 inch x 1 inch Black Iron 90° Reducing Elbow is designed for dependable service in threaded systems requiring directional change with a reduction in pipe size. Built to meet mechanical code and industrial application standards for gas, steam, and utility piping systems.