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

Black Malleable Iron Reducing Tee – 1" x 3/4" x 1" NPT Fittings for Gas and Mechanical Piping Systems

The 1" x 3/4" x 1" Black Malleable Iron Reducing Tee is a threaded fitting used to branch a smaller diameter pipe off a main line in systems requiring dimensional transitions. Fabricated in accordance with ASME B16.3 and ASTM A197/A47 specifications, this reducing tee is intended for use in non-potable water, steam, air, and gas distribution systems where threaded connections are specified by design or code.

The tee includes three internal (female) National Pipe Thread (NPT) ends and is finished with a black oxide coating to provide a protective layer against oxidation in dry interior environments. Suitable for Schedule 40 and Schedule 80 steel pipe systems, it allows reliable mechanical assembly without welding or soldering, reducing installation time in field applications.

Key Product Features

• Material: Malleable cast iron (ASTM A197)
• End Connections: 1" x 3/4" x 1" Female NPT (ANSI/ASME B1.20.1)
• Design: Reducing tee configuration for intersecting three pipe segments of varying diameter
• Finish: Black oxide coating (not suitable for corrosive or buried environments without additional protection)
• Standards Compliance: ASME B16.3, UL Listed, and FM Approved where applicable

Installation Requirements

Install using appropriate pipe joint compound or PTFE thread sealant tape. Tighten to manufacturer-recommended torque to avoid thread distortion or misalignment. Threads must be fully engaged, and fittings must be supported to reduce strain on joints. For fuel gas systems, installation must comply with NFPA 54 or other jurisdictional codes.

Typical Applications

Used in mechanical piping systems including low-pressure natural gas, compressed air, steam, oil distribution, and closed-loop hydronic heating systems. Commonly found in boiler rooms, utility corridors, and commercial HVAC installations where pipe branches are required for equipment connections or zoning.

Material and Use Considerations

Black malleable iron fittings are not rated for potable water or corrosive media unless properly coated or lined. For underground or wet location use, galvanized or epoxy-coated variants may be required. Always verify compatibility with system fluid and design pressure/temperature limits.

The 1" x 3/4" x 1" Black Iron Reducing Tee provides a robust, code-compliant solution for contractors requiring consistent, threaded transitions in industrial and commercial piping networks.