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

1-1/4" Black Iron Reducing Tee – Threaded F-F-F for Durable Pipe Transitions

The 1-1/4" Black Iron Reducing Tee is designed for use in mechanical and plumbing systems requiring a branch connection to a reduced line size. Manufactured to meet industry-standard tolerances, this fitting supports threaded transitions between 1-1/4" main lines and a reduced outlet, commonly 1/2" or 3/4", depending on specification.

Constructed from robust black malleable iron, this tee is suitable for use in gas, water, steam, and air systems where pressure and temperature demands require fittings with high mechanical strength. The threaded ends (female NPT) enable a secure mechanical seal when installed using compatible sealants or tape.

Performance Features

• ✅ Malleable Iron Body – Suitable for pressure systems and resilient under thermal cycling and vibration.
• ✅ Full-Depth Threads – Precision cut to NPT standards for enhanced engagement and reduced leak potential.
• ✅ Corrosion-Resistant Finish – Black oxide coating provides surface protection during handling and installation.
• ✅ Standard Reducing Design – Enables inline reduction from 1-1/4" to smaller diameters, simplifying layout changes.
• ✅ High-Temperature Capability – Appropriate for systems operating at elevated temperatures in heating or gas delivery applications.

Technical Specifications

• Material: Black Malleable Iron
• Inlet/Outlet Configuration: 1-1/4" x 1-1/4" x Reduced Branch (typically 1/2" or 3/4")
• Thread Type: NPT (National Pipe Thread), Female x Female x Female
• Standards: ANSI B16.3, ASTM A197, UL/FM listings where applicable
• Working Pressure: Up to 300 psi (non-shock cold water), varies by system design

Common Applications

Black iron reducing tees are routinely used in natural gas and LP gas distribution systems, hydronic heating loops, air compressor lines, and non-potable water installations. These fittings are suitable for indoor use and can be installed in commercial, industrial, or residential systems where material compatibility and pressure ratings are met.

Installation Notes

Use of thread sealant or Teflon tape is recommended. Apply torque evenly using pipe wrenches, ensuring the fitting is not overstressed during installation. All threads must be clean and inspected prior to tightening to prevent galling or thread misalignment.

For contractors working with threaded steel or iron piping systems, the 1-1/4" Black Iron Reducing Tee provides dependable performance in demanding environments, making it a go-to fitting for pressure-rated branch take-offs.