ElectroFlange™ Pre-Fabricated Isolating Flanges


The ElectroFlange™ is a pre-fabricated flange isolation kit including the flanges, bolts and pipe pups

ElectroFlange™ Joints provide electrical isolation for gas, water and petroleum pipelines; providing operation and maintenance cost savings. They do not require maintenance and can eliminate vault expense. GPT offers the best solutions for preventing corrosion in all industries including: onshore and offshore mains, petroleum refinery complex, chemical plants, waterworks, wastewater, gas transmission and gas distribution systems.

The ElectroFlange™ is factory assembled by GPT under controlled conditions and is 100% factory-tested and warranted to meet customer specifications for size, pressure, corrosion coatings etc. Available with a NSF-61 Certified interior coating.


  • Pre-Installed Isolation Gasket – Proper gasket compression and bolt load consistency are achieved
  • Pre-Installed Isolation Washers – Improper installation is avoided preventing short circuit via operator error
  • Outstanding electrical isolation properties for cathodic protection
  • Coated Bolts – Redundant corrosion protection for bolted assembly
  • Pre-Wrapped Joint – Encapsulates entire flange including bolt assembly providing corrosion protection to all critical parts


Direct Bury

  • B7 Bolts coated with Xylan 1010
  • 2H Nuts with Xylan 1010 coating
  • Single SS Washer with X37 coating
  • Electrical continuity design for bolting
  • Dual seal G10 LineBacker® isolation gasket G10 sleeves
  • Fusion bonded epoxy coating
  • Proprietary isolation flange filler
  • Wax taped flange protection


  • B7 Bolts coated with Xylan 1010
  • 2H Nuts with Xylan 1010 coating
  • Dual SS Washer with X37 coating
  • Fusion bonded epoxy coating G10 sleeve
  • Dual seal G10 LineBacker® isolation gasket