1-1/4 inch x 1/2 inch Black Iron Reducing Tee Female x Female x Female

1-1/4" x 1-1/4" x 1/2" Black Malleable Iron Reducing Tee – Threaded Fitting for Multi-Branch Pipe Systems

The 1-1/4" x 1-1/4" x 1/2" Black Malleable Iron Tee is a cast iron pipe fitting designed for use in low- to medium-pressure systems involving steam, gas, air, or liquid conveyance. This reducing tee provides a 90° branch outlet at a reduced size, allowing for integration of a smaller line into a main 1-1/4" run without compromising thread engagement or structural integrity.

Manufactured in compliance with ASME B16.3 and ANSI B1.20.1 standards, the fitting is suitable for use in mechanical rooms, gas distribution lines, hydronic heating systems, and general piping applications where corrosion resistance, pressure performance, and dimensional uniformity are essential.

Key Product Features

• ✅ Malleable Iron Construction – Engineered for high tensile strength and ductility under pressure and thermal cycling.
• ✅ Black Finish – Uncoated exterior suitable for non-potable service; resists rust in dry or interior environments.
• ✅ Reducing Outlet – Facilitates the connection of a 1/2" branch line to a 1-1/4" main pipeline, optimizing system layout without additional reducers.
• ✅ Threaded Ends – Precision-machined female National Pipe Threads (NPT) ensure a tight mechanical seal with compatible threaded pipe and fittings.
• ✅ Code-Compliant – Conforms to dimensional and performance requirements for industrial and commercial use.

Technical Specifications

• Material: Black Malleable Iron per ASTM A197
• Sizes: 1-1/4" x 1-1/4" x 1/2"
• Connection Type: Female NPT x Female NPT x Female NPT
• Standard Compliance: ASME B16.3; Threads per ANSI B1.20.1
• Working Pressure: Rated for up to 150 PSI non-shock cold water, oil, or gas systems (WOG)

Installation Considerations

Use approved thread sealant or PTFE tape on all male pipe threads prior to assembly. Tighten with appropriate tools to ensure full thread engagement without over-torqueing. This fitting is intended for use in above-ground systems; not rated for underground or potable water service unless otherwise approved and coated.

Typical Applications

This reducing tee is commonly used in multi-branch piping systems where a smaller outlet line is needed—such as gas manifolds, HVAC loops, or auxiliary supply lines within industrial and commercial piping layouts. Compatible with black steel or schedule 40 pipe systems.

Material Note

Black malleable iron fittings are intended for non-potable systems and are not internally coated. For potable water or corrosive media, specify galvanized or epoxy-lined fittings as appropriate for the application and local code requirements.