1 inch Black Iron Floor Flange

1 Inch Black Iron Floor Flange – Threaded Fitting for Secure Pipe Mounting

The 1 inch Black Iron Floor Flange is a cast iron fitting used to terminate and secure threaded pipe runs to structural surfaces. Designed for gas, air, and low-pressure water systems, it features a threaded hub for pipe connection and four bolt holes for mechanical fastening to floors, walls, or other flat surfaces.

Application and Material Characteristics

Manufactured from malleable black cast iron, this flange is suitable for indoor piping installations in both commercial and residential settings. It provides a rigid mounting point for vertical or horizontal pipe runs and is commonly used in systems where support or fixture anchoring is required.

• ✅ 1 Inch NPT Thread Accepts standard Schedule 40 steel or iron pipe with tapered male threads.
• ✅ Malleable Iron Body Cast to ASTM A197 or A47 standards for strength and dimensional consistency.
• ✅ Four-Bolt Mounting Pattern Designed for stable, flush surface attachment with standard fasteners.

Installation Requirements

Install using properly sized pipe with tapered NPT threads. Apply an approved thread sealant or gas-rated PTFE tape depending on the system application (e.g., gas or air). Fasten the flange securely to a stable mounting surface using appropriate anchors or bolts. Ensure alignment and proper torque to maintain structural stability and joint integrity.

• ✅ Pipe Preparation: Clean threads prior to assembly.
• ✅ Sealant Use: Use thread sealant rated for the system medium.
• ✅ Mounting Surface: Secure to concrete, wood, or structural steel using fasteners rated for the material type.

Technical Specifications

• Material: Black malleable cast iron
• Size: 1 inch nominal pipe size
• Thread Type: Female NPT (National Pipe Tapered)
• Bolt Holes: Four, equally spaced
• Standard Compliance: ANSI/ASME B16.3 and B16.14

Common Use Cases

This flange is commonly used to anchor piping to floor or wall surfaces in gas distribution lines, air compressor systems, and low-pressure hydronic systems. It is also suitable for supporting vertical risers or forming connection points to equipment or structural components.

Material and Code Considerations

Black iron fittings are typically used in non-potable systems due to the absence of protective coatings. For systems conveying natural gas, fittings must be approved under applicable mechanical and fuel gas codes. Always confirm material and connection suitability with local jurisdictional requirements.

The 1 inch Black Iron Floor Flange provides a durable solution for fixed-position pipe connections in mechanical, HVAC, and industrial plumbing systems. Its threaded hub and mountable design make it a dependable fitting for a variety of structural and utility piping installations.