ZBK series Roots Vacuum Pump is a rough vacuum equipment, with high efficiency. Roots Vacuum Pump ZBK series Roots Vacuum Pump is a rough vacuum equipment, with high efficiency, small ... , electrical equipment, coal, ore building, chemical fertilizer. The suction vacuum in areas such as media can be taken for the ... 103Diameter of inlet,outlet(mm)150150150200250power(KW)7.511153775 Roots Vacuum Pump