... is specially designed for the high efficiency hydraulic drive with open loop.1.Wildly applied for ceramic press, refractory press ... , ship machinery, petroleum equipments, engineering and machine tool control.2.Pumping rate: 40, 71,125,180, 250, ... Complete control mode, including DR/DRG constant pressure control, LR hyperbola constant power auto-control, and EO2 electrical proportional control. 11 ...