SOLENOID COCK FOR LIGHT COMBAT AIRCRAFT (LCA)

This device relates to Solenoid Cock with application to isolate the hydraulic oil supply to non essential hydraulic services during emergency situation and to ensure hydraulic supply to essential services required for safety of aircraft. This Solenoid Cock receives electrical signal from low emergency level switch provided on the pressurized Hydraulic Reservoir when hydraulic oil in the reservoir fall below the emergency level. This electrical signal energizes the Solenoid Cock which blocks the hydraulic supply to non-essential services of the hydraulic system to preserve the oil for operation of essential services for safe flight. However when de-energized, a flow of 60 Ipm can pass through this valve at the max pressure drop of 6 bar to serve all services of the hydraulic system of the aircraft. This, 2 way, 2 positions, normally open pilot operated solenoid Valve mainly constitute of main body accommodating both main valve and pilot valve. The externally mounted solenoid S/A energizes on receiving electrical signal and operates pilot valve which in turn operates main valve to block the hydraulic supply.