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

Black Iron Reducing Tee – 1 inch x 3/4 inch x 1/2 inch for Gas and Hydronic Piping Systems

This Black Iron Reducing Tee is manufactured to ASTM A197 and ASME B16.3 specifications, making it suitable for transitioning between nominal pipe sizes in threaded black malleable iron systems. It features three female NPT connections, allowing for secure and code-compliant branch connections in gas distribution, hydronic heating, and other low-pressure applications.

Key Product Features

• ✅ Thread Standard: NPT per ANSI/ASME B1.20.1 for consistent, leak-resistant engagement across all connections.
• ✅ Material: Class 150 black malleable iron for high mechanical strength and resistance to deformation.
• ✅ Corrosion-Resistant Coating: Phosphate or black oxide finish provides basic protection for above-ground applications.
• ✅ Working Pressure: Rated for up to 150 psi non-shock cold water, oil, or gas (WOG) in accordance with UL and FM standards.
• ✅ Precise Machining: Threads are CNC-machined for uniformity, reducing installation time and increasing sealing reliability when used with thread sealant or PTFE tape.

Technical Specifications

• Material: Black Malleable Iron (ASTM A197)
• Size: 1 inch x 3/4 inch x 1/2 inch
• Connection Type: FNPT x FNPT x FNPT
• Pressure Rating: 150 psi WOG
• Conformance: ASME B16.3, ANSI B1.20.1, UL/CSA/FM listed where applicable

Installation Considerations

Threaded installation requires proper alignment and sealing. Pipe ends should be reamed, clean, and cut square. Apply appropriate thread sealant or PTFE tape to male threads and tighten to recommended torque using pipe wrenches. Avoid overtightening to prevent thread deformation or cracking.

Typical Applications

This reducing tee is commonly used in:

• Low-pressure gas piping systems (natural gas, propane)
• Hydronic heating circuits (boiler supply and return lines)
• Compressed air and oil distribution lines (where code permits)
• Non-potable water supply and mechanical piping systems

Did You Know?

Malleable iron fittings like this tee undergo an annealing process after casting to improve ductility and reduce brittleness—making them ideal for mechanical piping systems that require consistent thread engagement and vibration resistance.

The Black Iron Reducing Tee 1 inch x 3/4 inch x 1/2 inch is a critical component in any multi-size pipe transition where strength, code compliance, and performance matter. Suitable for professionals working on mechanical, HVAC, or utility piping installations in residential and commercial systems.