Insulating Flanges

Insulating Flanges

Insulating flanges are connection elements used in pipelines to electrically separate different metal parts. Their use in cathodic protection systems plays a significant role in enhancing the system's effectiveness and preventing the spread of corrosion.

Primary Functions of Insulating Flanges:

  • Electrical Isolation: Insulating flanges electrically separate the metal parts of a pipeline, reducing the risk of galvanic corrosion.
  • Cathodic Protection Zoning: They isolate different regions of cathodic protection systems, allowing the protection current to concentrate in the desired areas.
  • Corrosion Control: By preventing the formation of galvanic cells when different metallic structures are connected, they help control corrosion.

Usage in Cathodic Protection:

  • Providing Regional Protection: In cathodic protection systems, isolating sections of pipelines with insulating flanges optimizes the protection current applied to each section. This increases energy efficiency and enhances protection effectiveness.
  • Maintenance and Control: Insulating flanges facilitate the independent testing and maintenance of different regions of a cathodic protection system.
  • Reducing Potential Differences: They help minimize potential differences in pipelines, thereby reducing the corrosion rate.

Technical Specifications:

  • Material: Insulating flanges are typically made from materials with high dielectric strength. These include epoxy-coated steel, fiberglass, and other composite materials.
  • Construction: Insulating flange sets consist of isolating gaskets, insulated bolts, and insulating washers.
  • Durability: They possess excellent chemical resistance and mechanical strength, making them ideal for challenging industrial environments.

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