Cast Iron Companion Flange | IrrigationSupplyParts.com

A Cast Iron Companion Flange is a type of pipe fitting used in irrigation, plumbing, and industrial systems to provide a secure and leak-proof connection between pipes, pumps, or valves. It features a flat, circular design with bolt holes for fastening to a mating flange, ensuring a stable and tight seal. Made from durable cast iron, it is suitable for heavy-duty applications, especially in systems handling high pressure or large volumes of water.

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Key Features:

1. Material – Cast Iron:
   • Known for its strength and durability, cast iron provides excellent resistance to mechanical stress, making it ideal for demanding environments.
   • Naturally resistant to wear and corrosion when properly coated or maintained.
2. Flat, Flanged Design:
   • The flat surface of the flange creates a solid sealing area, while the bolt holes allow for secure fastening to another flange or component.
   • Often used with gaskets to ensure a watertight connection.
3. Companion Flange Configuration:
   • Designed to align perfectly with another flange (or “companion flange”) for seamless integration into a piping system.
4. Standardized Sizing:
   • Manufactured to standard pipe flange dimensions (e.g., ANSI, ASME), ensuring compatibility with other standard components.
5. Bolt Holes:
   • Equipped with multiple bolt holes to evenly distribute clamping force, reducing the likelihood of leaks or misalignment.

Common Applications:

1. Irrigation Systems:
   • Connects pipes or hoses to pumps, valves, or mainlines in agricultural and landscape irrigation setups.
2. Pumping Stations:
   • Provides a secure connection between suction or discharge pipes and irrigation pumps.
3. Water Distribution:
   • Used in municipal and industrial water systems for connecting pipes or fittings.
4. Drainage Systems:
   • Ideal for handling wastewater or stormwater in drainage setups.
5. Industrial Piping:
   • Connects pipes and valves in systems handling fluids, chemicals, or gases.

Benefits:

1. Durability:
   • Cast iron construction ensures long-lasting performance under heavy-duty conditions.
2. Secure Connections:
   • The flange design provides a tight seal, especially when paired with a gasket, minimizing leaks.
3. Pressure Resistance:
   • Capable of handling high pressures, making it suitable for both irrigation and industrial applications.
4. Versatility:
   • Compatible with a variety of pipes, valves, and other components.
5. Ease of Installation:
   • Standardized design simplifies installation and maintenance, ensuring a precise fit with other system components.

How It Works:

1. Alignment:
   • Position the companion flange so that its bolt holes align with those of the mating flange.
2. Gasket Placement:
   • Insert a gasket between the two flanges to create a watertight seal.
3. Fastening:
   • Use bolts and nuts to secure the flanges together, evenly tightening to prevent leaks or uneven connections.
4. Testing:
   • Check for leaks and proper alignment after assembly.

Key Considerations:

1. Pipe Compatibility:
   • Ensure the flange size and pressure rating match the system’s requirements.
2. Gasket Selection:
   • Use an appropriate gasket material based on the fluid type and system conditions.
3. Corrosion Protection:
   • Consider coated or lined cast iron flanges for applications involving corrosive fluids or harsh environments.
4. Pressure and Temperature Ratings:
   • Verify that the flange meets the operating conditions of the system.