The present invention generally provides microfluidic devices and systems that utilize electrokinetic material transport systems to selectively control and direct the transport of materials through and among complex arrangements of integrated, interconnected microscale channels disposed within integrated body structures. The valve has an internally-mounted check element which allows the valve to provide a fail-safe mode for a downstream device in fluid communication with the control valve. The sun gear member is connected through a shaft to a torque-transmitting mechanism, which is disposed forward of an oil distribution snout and rearward of the vehicle engine.