Development Vacuum Equipment Co., Ltd. Dry Screw Vacuum Pumps · Clean Vacuum and No Pollution. Fast Pumping Down · Superior Stand-alone Ultimate Vacuum. Unique Hydrodynamic Spiral Jacket Cooling · Low Discharge Temperature · Low Power Consumption.Low Vibration · Low Noise Level. Easy Maintenance · Lower Maintenance Cost · Wide Range Ability of Process Vacuum and Wide Applications SVP series variable pitch screw dry vacuum pumps can be widely used in the chemical industry, pharmaceutical industry, food industry, solar, metallurgical system, heat treatment, electronics industry, etc. Vacuum Pump System Model: JZ2H70-15A Main Pump: ZJ-70DV1 Backing Pump: 2H-15DVA Displacement(L/s，50Hz): 70 Ultimate Partial Pressure(Pa): 0.02 Ultimate Total Pressure(Pa): 0.5 Motor Power(kW): 3.3 Suction(mm): 80 Discharge(mm): 40 Widely used in vacuum coating, vacuum metallurgy, vacuum heat treatment, vacuum drying, vacuum impregnation, vacuum strainer, poly-silicon production, aerospace simulation and so on.