3/4 inch Black Iron Floor Flange

3/4" Black Malleable Iron Floor Flange – Threaded Mounting Fitting for Rigid Pipe Systems

The 3/4" Black Malleable Iron Floor Flange is a heavy-duty, cast iron fitting used to securely mount vertical pipe sections to horizontal surfaces. It provides a threaded connection point for pipe assemblies and is designed for use in non-pressurized applications such as gas lines, mechanical supports, low-pressure air systems, and fixture installations.

Engineered for stability and alignment, the flange features a female NPT thread and four mounting holes for bolting to floors, walls, or structural supports. Its robust construction ensures mechanical strength and resistance to deformation during assembly or service.

Key Performance Features

• ✅ Malleable Iron Construction — Manufactured per ASTM A197 for durability and dimensional stability.
• ✅ Thread Specification — Female NPT connection per ASME B1.20.1 for compatibility with standard steel or iron pipe threads.
• ✅ Four-Bolt Mounting — Slotted or drilled mounting holes designed for rigid attachment to flat surfaces.
• ✅ Black Oxide Finish — Suitable for use in dry environments where corrosion resistance is not a primary concern.

Technical Specifications

• Material: Black Malleable Iron
• Nominal Pipe Size: 3/4 inch
• Connection Type: Female NPT (threaded)
• Mounting: Four-hole flange face (may vary by manufacturer)
• Standards: Conforms to ANSI/ASME B16.3 and B1.20.1, and typically meets UL/FM and ASTM A197 requirements where applicable

Application Scope

Commonly used in gas piping systems, decorative support brackets, light structural supports, HVAC components, and equipment framing. Suitable for indoor installations where rigid vertical-to-horizontal pipe transitions are required. Not designed for pressurized water service unless certified with additional protective coatings.

Installation Notes

Mount flange using appropriate anchors or fasteners based on substrate material. Use PTFE tape or thread sealant on male threads to ensure a tight mechanical seal. Confirm proper alignment before applying final torque to avoid cross-threading or flange distortion.

The 3/4" Black Iron Floor Flange is a dependable solution for applications requiring fixed support of threaded piping assemblies. Its sturdy construction and compliance with standard pipe threads make it a staple in residential, commercial, and light industrial installations.