Max-Air MT Series rack & pinion actuator outfitted with a custom electro-hydraulic power pack. The system is completely self-contained and ready for field wiring, includes manual handpump override and open/close feedback switches. Explosion proof or NEMA 4/4X options available for a variety of power and signal voltages. Electro-hydraulic capabilities extend into the HD Series scotch yoke actuators for larger valves.