FUEL BLOWDOWN VALVE AND FUEL TANK EQUIPPED WITH THIS VALVE Russian patent published in 2012 - IPC F16K17/36 F16K24/04 B60K15/35 

FIELD: machine building.

SUBSTANCE: fuel valve includes the main valve and auxiliary valve responding to pressure changes. The main and auxiliary valves are provided with possibility of axial movement inside common body. Body is equipped with fluid medium inlet and fluid medium outlet and partition between the main and auxiliary valves. Partition has a channel passing between the main channel on lower surface of partition and auxiliary valve on upper surface of partition. The main channel has the possibility of being closed tightly with sealing element of the main valve. Auxiliary channel has the possibility of being closed tightly with sealing element of the auxiliary valve. Auxiliary valve includes piston element and non-return valve. Piston element moves in axial direction inside the body and is equipped with one or more holes. Non-return valve contributes to fluid medium flow only in the direction from fluid medium outlet to auxiliary channel. Sealing element of auxiliary valve has the possibility of close contact with one or more of the above piston holes in case of the available flow in the direction from auxiliary channel to the above outlet. There is fuel tank equipped with the above fuel valve.

EFFECT: improvement of blowdown valve with double non-return valve, which actuates at turnover, which allows space saving, reducing manufacturing and installation costs and working hours.

8 cl, 6 dwg