Patent ID: 7752849

Claim:
A gas turbine engine including a fluid flow control arrangement comprising: a supply of fluid; a conduit coupled to a component of the gas turbine engine, and the conduit coupled to the supply of fluid for supplying fluid from the supply of fluid to the component; a magnetic valve constructed and arranged to at least partially restrict the conduit in response to a temperature of a ferromagnetic material to control the flow of fluid through the conduit, the magnetic valve comprising a valve member, the valve member having at least a first configuration in which the conduit is at least partially restricted and a second configuration in which the conduit is relatively open; and at least one member and the valve member forming a magnetic circuit across the conduit, one of the valve member and the at least one member comprising the ferromagnetic material and the other comprising a permanent magnet or electromagnet, wherein the configuration of the valve member is controlled by magnetic flux in the magnetic circuit and is responsive to the temperature of the ferromagnetic material in the magnetic circuit.