VALVE OF AIRCRAFT FOR DRAINAGE OF WATER, FUEL TANK OF AIRCRAFT, AIRCRAFT AND PROCEDURE FOR DRAINING WATER FROM FUEL TANK OF AIRCRAFT Russian patent published in 2011 - IPC F16K1/44 B64D37/00 

FIELD: machine building.

SUBSTANCE: valve consists of pass channel for liquid flow between internal and external sides of fuel tank, of rod, of first element of packing and second element of packing. The packing elements are positioned on the rod. The rod travels between an open position whereat the packing elements facilitate free flow of liquid through the pass channel and a closed position whereat the packing elements prevent flow of liquid through the pass channel and to space between the first and second elements of packing.

EFFECT: increased reliability of valve operation.

10 cl, 2 dwg