fully enclosed with clam shell type closure. (Top half lifts off bottom half for cleaning) Discharge via a vibratory conveyor With Filter is (1) 589 cfm, vac 0.5 torr, Busch Huckepak vacuum pump, type 445-001, serial # 1006,driven by 30 kW, 3/50/415 volt, 730 rpm motor; (1) 590 cfm, vac 0.5 torr, Busch Huckepak vacuum pump, type 445-001, serial # 205, driven by 30 kW, 3/50/415 volt, 730 rpm motor (1) 588 cfm (1000 cu.m/hr), vac. 0.5 mbar; max discharge pressure 0.2 bar, Busch Huckapak vacuum pump, type H0-0445-A-DO1-XXAX, serial # OHO1530101, driven by 30 kW, 3/50/415 volt, 730 rpm motor.