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Self-sealing Breakaway fuel valves that are designed to close upon separation and seal off fuel lines in response to structurally induced shear, tension or bending forces.

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

BALVAC® Breakaway valves separate and shut off fuel lines with negligible loss of fluid during separation (See Table). Self-sealing mechanism survives high impact without damage. Precision seals of specially-reinforced Teflon compound are protected from fuel flow. BALVAC® valves have been designed and qualified to meet MIL-STD-1290 and AIR 1616 requirements. (See Guidelines of typical separation loads for selected valve usage.) Simple design specifies qualified frangible elements in Franginsert® construction. Upon separation, 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. Valve balls are also mechanically grounded in standby open position providing uninterrupted fuel flow and negligible pressure drop through the valve.

BALVAC® Breakaway Fuel Valves are currently qualified and specified on modern aircraft including the CH-53E, MH-60S, HH-60G and SH-2G.