Abstract: The present invention is directed to an apparatus that satisfies the need for a closed system to actuate the control valve for zero-emissions control—not bleeding natural gas into the atmosphere. In one aspect, the apparatus includes a linear actuator, a power supply, a fluid power cylinder, and a supply line. In another aspect, the apparatus further includes a programmable logic controller. The power supply provides a power source for the linear actuator and programmable logic controller. The programmable logic controller delivers an output signal to the linear actuator. The linear actuator includes a piston that compresses or decompresses the volume within the fluid power cylinder. The piston is actuated to create a desired output pressure. The supply line delivers the desired output pressure from the fluid power cylinder to the control valve. The desired output pressure regulates pressurized fluid flow within the control valve.