1-1/4 inch x 3/4 inch x 1-1/4 inch Black Iron Reducing Tee Female x Female x Female

Black Malleable Iron Reducing Tee – Threaded Class 150 Fitting

The Black Iron Reducing Tee is a Class 150 malleable iron fitting designed to connect three pipe sections of varying diameters at 90-degree intersections. With a reducing outlet, this tee enables smooth transitions in line size within gas, oil, steam, or air systems. It features female National Pipe Taper (NPT) threads on all three ends and is manufactured to ANSI/ASME B16.3 and ASTM A197 standards.

This tee is constructed from black annealed malleable iron for enhanced ductility and impact resistance. The black finish offers minimal corrosion protection and is intended for use in low-moisture environments. Commonly found in fuel gas distribution, HVAC, compressed air, and general industrial piping systems, it is suitable for above-ground applications where a pressure-tight seal is required.

Specifications

• ✅ Material: Malleable cast iron (ASTM A197)
• ✅ Connection Type: Female NPT x Female NPT x Female NPT
• ✅ Pressure Rating: 150 PSI for steam/air, 300 PSI for water/oil (non-shock)
• ✅ Finish: Black (non-galvanized)
• ✅ Standard Compliance: ANSI/ASME B16.3, ANSI B1.20.1
• ✅ Type: Reducing tee – center outlet smaller than run connections

Applications

This reducing tee is used to connect dissimilar pipe sizes in piping systems that require mechanical strength, dimensional consistency, and leak resistance. Typical uses include:

• ✅ Natural gas and propane systems
• ✅ Steam and return loops (non-potable)
• ✅ HVAC air handling lines
• ✅ Compressed air and lubricant delivery piping
• ✅ Industrial oil distribution

Installation Requirements

Install using properly sized pipe wrenches and appropriate thread sealing compound or PTFE tape compatible with the system media. Threads must be free of contaminants and fully engaged to create a pressure-tight seal. Care should be taken not to over-tighten, which may damage threads or fittings. This fitting is intended for use in threaded systems only and is not suitable for welding.

Key Advantages

• ✅ Code-Compliant Design: Conforms to recognized mechanical and plumbing code requirements
• ✅ Robust Mechanical Properties: Ideal for high-vibration or mechanically active environments
• ✅ Thread Integrity: Tapered NPT threading supports leak-resistant engagement with standard piping
• ✅ Reduced Footprint: Compact fitting ideal for tight mechanical spaces

Regulatory Note

This fitting is approved for use in non-potable systems and complies with most U.S. mechanical code requirements for black malleable fittings. Always verify with the authority having jurisdiction (AHJ) before installation.

The Black Iron Reducing Tee is a durable, industry-standard component for professionals working in gas, steam, and mechanical piping environments. Its reliable threaded design and pressure rating make it well-suited for critical systems requiring dimensional accuracy and long-term performance.