1-1/2 inch x 3/4 inch Black Iron Reducing Tee Female x Female x Female

1-1/2" x 1-1/2" x 3/4" Black Malleable Iron Reducing Tee – NPT Threaded for Piping Systems

The 1-1/2" x 1-1/2" x 3/4" black malleable iron reducing tee is engineered for distributing and redirecting flow in branch connections where a reduction in line size is required. Manufactured to industry standards, this fitting features NPT female threaded ends for secure connections in gas, oil, air, and water systems.

Constructed from ASTM A197 malleable iron and coated with a protective black finish, it delivers the structural integrity and corrosion resistance needed for demanding applications. The reducing side outlet allows for seamless integration of different pipe sizes within a unified system layout.

Key Features

• ✅ Threaded NPT Connections – All three ports conform to ANSI B1.20.1 tapered threading for pressure-tight joints.
• ✅ Pressure-Rated Construction – Designed for use in systems requiring a high working pressure capability.
• ✅ Consistent Dimensions – Machined to tight tolerances for uniform alignment and minimal field adjustments.
• ✅ Mechanical Strength – Suited for horizontal and vertical installations in load-bearing pipe configurations.

Specifications

• Primary Size: 1-1/2 inch
• Outlet Size: 3/4 inch
• Connection Type: Female NPT x Female NPT x Female NPT
• Material: Black malleable cast iron (ASTM A197)
• Finish: Black oxide coating
• Standards: Conforms to ASME B16.3 and B16.14 for fitting and threading

Applications

This reducing tee is widely used in commercial and industrial mechanical systems. Common applications include branching from main runs in gas distribution, hydronic heating systems, and low-pressure steam or air pipelines. Its material characteristics make it suitable for indoor use in dry piping networks where fire resistance and mechanical stability are critical.

Installation Guidance

For optimal sealing, use with appropriate thread sealant or PTFE tape. Hand-tighten followed by wrench-tightening to specified torque values. When used in pressurized systems, confirm alignment and torque conformity to prevent stress at the joint interface. Installation should comply with applicable mechanical and plumbing codes.

Note

Black iron fittings are not intended for use in potable water systems due to potential internal corrosion. Always verify material suitability based on the intended medium and system requirements.

With its robust design and dimensional accuracy, the 1-1/2" x 1-1/2" x 3/4" reducing tee supports efficient, secure integration of varying line sizes while meeting the installation expectations of commercial-grade systems.