1. Without machine room on the top floor: the machine room installed with driving and control devices may be arranged at any place at any height not more than 10m away from the hoistway. The top floor structure is not particularly required.
2. Comfortable for riding: the specially designed elevator control valve can support balance acceleration and deceleration of the elevator under any capacity. The car will not sink even if for long-time stop.
3. Quiet running: the driving motor and pump as noise source components are located inside the oil tank and are completed immersed in the oil. Thus, the noise can be greatly reduced.
4. Accurate leveling: the leveling of all hydraulic elevators can be controlled with the height difference of several millimeters. Any tiny displacement of the car can be immediately modified by the automatic re-leveling device.
5. Low cost: the driving motor and the pump will work only in the car UP process. Since hydraulic driving parts are immersed in the oil, the wearing is very limited. Hydraulic driving elevators have good safe operation performance and low operation cost. Their good work performance is highly convincible. They can be stably started, create comfortable riding experience and ensure accurate leveling and the largest utilization rate.