AdelWiggins has been supplying dielectric fuel and hydraulic isolators dating back to the 1990s. These isolators have been rigorously tested and qualified to most of the major aircraft OEM specifications. Dielectric isolators can be used on a variety of different fuel system types, such as: vent lines, jettison, supply lines, refuel lines, inerting lines, transfer lines, and motive flow. AdelWiggins’ dielectric fuel tubes can also be used not only in specific locations, but for the entire fuel system.

• ​Dielectric fuel isolators can be custom designed to any configuration:​​
• Tube resistance values can be modified per customer requirements
• Both high and low pressure requirements supported
• Standard or customized end fittings or flanges

Specifications:

• ​Typical 100K to 100M Ohms of resistance
• Can withstand 13 KV lightning testing per SAE ARP5412
• Diameters of 0.5″ (13 mm) to 4″ (102 mm)
• Lengths of 3.9” to 176.4
• ​​​Typical ends include SAE AS1650, AS1710, AS1730, AS5830
• Pressures (typical):
  • Operating: 125 psig (up to 600 psig)
  • Proof: 250 psig similarly for this and burst below
  • Burst: 375 psig
  • Higher ratings available
• Temperatures (typical):
  • Air: -65 F to 180 F
  • Fuel: -65 F to 160 F
• Fully qualified for environmental standards per RTCA/DO-160
• Capable of mating with standard or special fitting ends
• Compatible with several types of fluids including fuel, hydraulic fluid, solvent and cleaning fluid, etc.
• Special connections or flanges (Sockets/Bulkheads/Panels)
• Aluminum, Steel, or Titanium ferrule

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