Fuel Tank Valve Assembly
AssigneeFilton Systems Engineering Ltd
InventorsBenjamin Richardson, John Austin, Alexander Colwood, Christopher Cavey
Life of this patent
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Abstract
There is disclosed a fuel tank valve assembly 24 for a fuel tank 4. The fuel tank valve assembly comprises a discharge valve 30 which in normal operation is closed, and which can be opened to discharge fluid from the fuel tank; and a water passageway 56 across which extends a membrane 60 which is permeable to water but impermeable to fuel. There is also disclosed a fuel tank 4 comprising a fuel tank valve assembly 24.
Claims20
A fuel tank valve assembly for a fuel tank, comprising:
- a discharge valve which in normal operation is closed, and which can be opened to discharge fluid from the fuel tank;
- and
- a water passageway across which extends a membrane which is permeable to water but impermeable to fuel.
A retrofittable valve element for a discharge valve of a fuel tank valve assembly comprising a water passageway extending therethrough and across which extends a membrane which is permeable to water but impermeable to fuel.
A method of modifying an existing fuel tank valve assembly comprising a discharge valve which in normal operation is closed, and which can be opened to discharge fluid from the fuel tank, the discharge valve comprising first and second valve elements, one of which comprises a valve seat and the other of which comprises a valve member moveable between at least an open position and a closed position so as to open and close the discharge valve, the method comprising:
- removing at least one of the valve elements from the discharge valve;
- and
- attaching at least one replacement valve element to the discharge valve which comprises a water passageway extending therethrough and across which extends a membrane which is permeable to water but impermeable to fuel.
Dependencies are inferred from the claim text.