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14000 “BALVAC” Series

Self-Sealing Breakaway Fuel Valves (couplings) for Crash-Resistant Fuel Systems


Avoid fuel leakage hazards of aircraft structural damage from hard landings. Post-crash fires in otherwise survivable crashes are the cause of needless deaths.

Spectrum’s series of BALVAC™ II Self-sealing Breakaway fuel valves are designed to close upon separation and seal off fuel lines in response to structurally induced shear, tension, or bending modes tailored to specific aircraft requirements.

These patented valves are installed where fuel lines connect to tanks, between tanks, at firewalls, and other points where a hard landing can cause fuel system leaks.

Spectrum proprietary analysis capability allows for rapid risk reduction of new breakaway valve customer design requirements.

BALVAC™ Self-Sealing Breakaway fuel valves separate and shut off fuel lines with negligible loss of fluid during separation (See Table).

BALVAC™ valves have been designed to meet FAA FAR Part 25, 27, and 29, MIL-STD-1290, AIR 1616, and MIL-STD-810 requirements. (See Guidelines of typical separation loads for selected valve usage.) Upon separation of the valve halves, Centrip™, a captive hemispherical trigger, leaves its mating socket releasing each ball valve to instantly rotate. Balls close securely against limit stops, driven by rugged torsion springs. Rugged reinforced Teflon seals provide leak tight performance.

BALVAC™ Breakaway Fuel Valves are currently qualified and specified on aircraft including the Sikorsky CH-53E/ CH53K/ MH-60S/HH-60G/SH-2G/ S92/CH148, MD530F, Schweizer model 269C/ S300, Enstrom 480B, Bell CH-47, Leonardo AW609.

Spectrum is the world leader in self-sealing breakaway valves. Send us your specifications. We currently manufacture more than 85 configurations. Chances are, one may meet your existing or planned specifications.

Spectrum 14000 Frangible Quick Disconnect Separation Test of Typical Breakaway Fuel Valve