Ductile Iron Backup Flanges

Ductile Iron Backup Flanges are designed to provide a secure mechanical connection when used with ductile iron pipe systems and compatible mechanical joint components. Manufactured from high-strength ductile iron, these backup flanges deliver excellent durability, corrosion resistance, and dependable performance in waterworks, municipal, and industrial piping applications.

Available in multiple nominal pipe sizes, these flanges are precision-machined to ensure proper alignment and reliable sealing when paired with the appropriate gaskets, glands, and hardware.

Key Features

• Constructed from durable ductile iron
• Designed for use with ductile iron pipe systems
• Provides a secure mechanical backup flange connection
• Precision-machined bolt holes for accurate alignment
• Suitable for municipal, commercial, and industrial applications
• Compatible with standard flange accessories and hardware
• High strength and impact resistance
• Available in nominal pipe sizes: 1/2", 3/4", 1", 1-1/4", 1-1/2", 2-1/2", 3", and 4".

Construction Details

Manufactured from ductile iron for superior tensile strength and toughness compared to traditional cast iron, providing long-term reliability in demanding piping systems.

Each backup flange is machined to maintain consistent dimensions and proper bolt alignment, helping ensure a secure installation and dependable sealing performance.

Important Notes

Select the backup flange size to match the nominal pipe size and compatible flange components.

Gaskets, bolts, nuts, and other installation hardware are typically sold separately unless otherwise specified.

Always follow manufacturer recommendations and applicable piping standards during installation.