Flange insulation kit vs. flange insulating kit vs. flange isolation kit vs. flange isolating kit, is there a difference?

There is no difference, these are just slight variations that refer to the same product.

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 What is the purpose of flange isolation kits?

Electrical isolation separates cathodic protection systems in your pipeline to more effectively manage corrosion in each asset. Electrical isolation is also used in cases when two different materials like stainless steel and carbon steel flanges meet.

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 How do I install a flange isolation kit?

It depends which type of gasket you have. Click on the link below for more information or give us a call.

 

How do I know whether to buy Type E, Type F, or Type D Flange Isolation Kit?

This depends on operator preference & specification. Type D gaskets only for RTJ flanges. Type F gaskets are self-aligning and can be used with RF, FF, or RTJ flanges. Type E gaskets are more difficult to install because it has bolt holes built into the gasket.

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What is typically included in a Flange Isolation Kit?

Dielectric gasket with seal, dielectric sleeves, double dielectric washers, and backup steel washers. 

Material recommendation: G10 for ambient pipeline applications (Gas, NGL, or Crude Service)

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When are casing spacers used?

Casing Spacers are used when a pipeline route must cross a highway, river, or railroad. In many cases the pipeline operator must encase the pipeline to protect it from potential external load forces.

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When are Innerlynx Modular End Seals used?

Innerlynx modular end seals are used to seal at each end of the crossing or when penetrating a wall (dike walls and compressor station walls). Innerlynx must be used with centered casing spacers or centered and restrained casing spacers to ensure proper fit.

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 When is the DEHN Flange Insulating Kit Over Voltage Protector 923100 product used?

DEHN Lightning Over Voltage Protection is recommended by NACE at all flange isolation kits and Monolithic IsoJoints.  Often, electrical towers are located in the pipeline right of way and can create stray current in these type of events on to the pipeline which will burn the gasket affecting its sealing capabilities. The DEHN OVP will allow the over voltage to flow across the flange isolation kit without burning the kit without permanently shorting a Cathodic Protection System.

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