A4VSO40 350 bar High Pressure Constant Pressure Variable Pump for Hydraulic Power Unit & Industrial Press Key Features 1. DR constant pressure control, stable pressure maintaining, fast control response 2. Nominal pressure: 350 bar; Max peak pressure: 400 bar 3. Displacement: 40 ml/r 4. Through shaft design, can connect additional pumps to form pump combination 5. Low noise, excellent suction performance, modular structure, easy maintenance 6. Drive shaft can bear axial &