Civacon's CivaControl™ Air Control Systems provide simple yet safe control for the entire cargo tank’s air system during loading and unloading operations. These systems bring together integrated control of the cargo tank vapor-recovery vents and internal / emergency valves, assuring that these critical components are sequenced properly to provide the safest operation possible and giving the user critical feedback of proper operation. Our CivaControl Air Control Systems also provide the needed interface for overfill detection system interlock as well as for vehicle drive-away protection. The CivaControl Air Control Systems push-pull style valve operators also feature the ability to be reset automatically to the "all closed" position when the vehicle's parking brake is released, should the driver inadvertently forget to do so.