E, H & P Series are compressed air-driven, positive-displacement intensifier pumps. Ideally suited for hydraulic applications with intermittent flow and pressure demands, E, H & P Series pumps utilize factory customized hydraulic and pneumatic circuitry. Air-driven Intensifier, Positive-displacement Operation Consumes no compressed air or electric power while maintaining pressures up to 10, 000 psi (680 bar) for hours on end. Does not generate heat during the pump cycle or while maintaining pressure. Eliminates need for oversized oil reservoirs or heat exchangers present in many hydraulic pump systems. Nearly 100% efficient, so no energy is wasted in achieving the task at hand.