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

3/4 inch x 1/2 inch x 3/4 inch Black Malleable Iron Reducing Tee – Threaded F x F x F

The 3/4 inch x 1/2 inch x 3/4 inch Black Malleable Iron Reducing Tee is designed for use in threaded pipe systems requiring dimensional reduction at branch connections. Manufactured from ASTM A197 malleable cast iron and conforming to ASME B16.3, this fitting features three female NPT connections to accommodate standard Schedule 40 or Schedule 80 carbon steel pipe.

With a black oxide finish, the tee is intended for non-corrosive indoor environments and is commonly used in fuel gas, steam, air, and low-pressure water systems. The reducing configuration allows for directional flow changes and pipe size transitions in rigid piping layouts without requiring additional fittings or adapters.

Product Specifications

• Material: Malleable cast iron (ASTM A197/A47)
• Nominal Sizes: Run – 3/4 inch NPT; Branch – 1/2 inch NPT
• Threading Standard: ANSI/ASME B1.20.1 (tapered NPT)
• Configuration: Reducing tee – Female x Female x Female
• Finish: Black oxide (for above-ground, non-potable systems)
• Certifications: UL listed, FM approved (when specified); meets ASME B16.3 requirements

Installation Guidelines

Threads should be cleaned and sealed using PTFE tape or pipe joint compound suitable for the system media. Avoid over-tightening to prevent thread damage. All installations must comply with applicable mechanical or plumbing codes (e.g., NFPA 54 for gas lines). Proper system support and alignment are essential to reduce stress on fittings during operation.

Typical Applications

This fitting is suitable for use in low- to moderate-pressure piping systems, including fuel gas distribution, steam lines, compressed air systems, and closed-loop hydronic heating. It is commonly installed in mechanical rooms, boiler piping, and commercial distribution headers where reducing branch takeoffs are needed.

Material and Environmental Considerations

Black iron is not corrosion-resistant and should not be used in outdoor or buried applications without proper protection. For water systems requiring corrosion resistance or potable water approval, galvanized or alternative materials should be used. This fitting is designed for indoor, dry-environment service.

The 3/4 inch x 1/2 inch x 3/4 inch Black Malleable Iron Reducing Tee offers a durable and dimensionally stable connection point for branching pipelines in code-compliant mechanical and industrial installations.