1 inch Black Iron Tee Female x Female x Female

1 inch Black Malleable Iron Tee – Threaded Fitting for Gas and Mechanical Pipe Systems

The 1 inch Black Iron Tee is a three-outlet, internally threaded fitting used to create branch connections in black pipe systems. Manufactured from malleable cast iron, it is designed to withstand pressure, mechanical stress, and thermal variation in gas distribution, heating, and industrial piping applications.

Designed to ANSI/ASME B16.3 standards, this fitting provides dependable performance in environments requiring rigid mechanical joints. All three outlets are National Pipe Taper (NPT) threaded, facilitating secure alignment with other pipe and fittings without the need for welding or soldering.

Product Features

• ✅ Three-Way Threaded Connection – Female x Female x Female NPT threads allow for precise branch integration in straight runs or directional transitions.
• ✅ Malleable Iron Body – Cast to ASTM A197/A197M specifications for consistent wall thickness, pressure tolerance, and impact resistance.
• ✅ Uncoated Black Finish – Intended for use in non-corrosive environments such as indoor gas lines, steam, and compressed air systems.
• ✅ Pressure Rated – Typically rated for 150 PSI (non-shock) in water, steam, air, and gas applications; verify per manufacturer specs for specific pressure/temperature charts.
• ✅ Thread Conformance – Machined to ANSI/ASME B1.20.1 standards for tapered pipe threads, ensuring leak-resistant assembly with proper sealant.

Specifications

• Material: Black Malleable Iron
• Size: 1” Nominal Pipe Size
• Connection Type: NPT Female x Female x Female
• Standard Compliance: ASTM A197, ANSI/ASME B16.3, ANSI/ASME B1.20.1

Typical Applications

Used in fuel gas piping, low-pressure steam, compressed air, and hydronic heating systems. Commonly installed in horizontal or vertical lines to connect branch circuits or pressure regulators. Suitable for interior installations where corrosion protection is not required.

Installation Guidelines

Apply PTFE tape or pipe joint compound to male threads. Use appropriate torque with a pipe wrench to avoid over-tightening. Ensure all connections are pressure-tested per applicable code after installation. For gas service, follow all local mechanical code provisions and NFPA 54/ANSI Z223.1 requirements.

Material Consideration

Black iron is uncoated and not intended for direct use in corrosive or outdoor conditions. For environments exposed to moisture or chemical exposure, a galvanized or coated alternative is recommended.