HZ series piston accumulator station is a modular, ready-to-connect hydraulic energy storage system consisting of piston-type accumulators, nitrogen gas tanks, a valve block, manifold line, and a steel support frame.

In this system, the piston accumulators absorb hydraulic pressure, while the nitrogen tank group maintains gas stability and ensures long-term pressure endurance. In this way, pressure surges are reduced, pump load is decreased, and energy recovery within the hydraulic system becomes possible.