Fuel Isolators

AdelWiggins aerospace fuel isolators are engineered to provide reliable dielectric protection for a wide variety of aircraft fuel systems. These aerospace composite isolators are designed for vent lines, jettison lines, supply lines, refuel lines, inerting lines, transfer lines, and motive flow applications, ensuring operational safety and compliance with industry regulations.

With decades of experience dating back to the 1990s, AdelWiggins dielectric fuel isolators combine advanced materials with precise engineering to provide superior aerospace lightning protection and high resistance to electrical discharge. Each isolator is rigorously tested and qualified to meet major aircraft OEM specifications, ensuring reliable performance across commercial and military platforms.

Our fuel isolators can be custom configured to meet specific requirements:

• Tube resistance values tailored per customer specifications

• Support for both high- and low-pressure applications

• Standard or custom end fittings, flanges, or connections

• Aluminum, steel, or titanium ferrules for structural integrity

Key Specifications:

• Resistance: 100K to 100M Ohms typical

• Lightning withstand: up to 13 kV per SAE ARP5412

• Diameters: 0.5″ (13 mm) to 4″ (102 mm)

• Lengths: 3.9” to 176.4”

• Operating pressure: 125 psig (up to 600 psig)

• Burst pressure: 375 psig

• Operating temperatures: Air: -65 F to 180 F | Fuel: -65 F to 160 F

• Fully qualified for environmental standards per RTCA/DO-160

• Compatible with fuel, hydraulic fluid, solvents, and cleaning fluids

AdelWiggins fuel isolators provide lightweight, reliable, and highly effective protection for aircraft fuel systems while ensuring compliance with aerospace lightning protection requirements.