Patent ID: 8267120

Claim:
A control valve assembly for a load carrying vehicle that includes a storage space and a dumping mechanism movable between an open position that allows access to the storage space and a closed position that inhibits access to the storage space, the control valve assembly comprising: a housing; a sliding valve positioned within the housing and movable between a first position, wherein the dumping mechanism is moved toward the open position, and a second position, wherein the dumping mechanism is moved toward the closed position, the sliding valve including: a first piston coupled to a first end of the sliding valve and defining a first piston first surface and a first piston second surface, and a second piston coupled to a second end of the sliding valve opposite the first end and defining a second piston first surface and a second piston second surface, the first piston second surface facing the second piston first surface, a pilot system including: a first pilot passage in fluid communication with the first piston second surface to selectively actuate the sliding valve toward the first position, and a second pilot passage in fluid communication with the second piston first surface to selectively actuate the sliding valve toward the second position, and a solenoid system in communication with the sliding valve and operable in response to an electrical signal to actuate the sliding valve between the first position and the second position; wherein the solenoid system is not in fluid communication with the pilot system.