Oil Rotary Vane Vacuum Pump (Double Stage) (MVP Big Series)

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Woosung Vacuum Pump (Oil Rotary Vane Vacuum Pump (Double Stage) (MVP Big Series)

Technical Data   MVP 144 MVP 216 MVP 324
Nominal Displacement  50Hz m³/h 120 180 270
Nominal Displacement  60Hz m³/h 144 216 324
Ultimimate Pressure Torr (With Gas Ballast) 5 x 10ˉ4 5 x 10ˉ4 5 x 10ˉ4
Torr (Without Gas Ballast) 5 x 10ˉ3 5 x 10ˉ3 5 x 10ˉ3
Motor Version 50Hz/60Hz Three Phase 380V 380V 380V
Motor Version 50Hz/60Hz Single Phase - - -
Nominal Motor Rating kW Three Phase 3.7 5.5 7.5
Nominal Motor Rating kW Single Phase - - -
Nominal Motor Speed 50Hz/60Hz Min-1 1450/1750 1450/1750 1450/1750
Cooling water (less than 20ºC) L/min - - 6
Oil filling liter 11 16 217
Weight Approx 50Hz/60Hz KG 172 290 358

Design Features
  1. Excellent ultimate vacuum and pumping speed.
  2. Improved anti-suckback system to protect the pump in the event of sudden stop.
  3. International standard flange.
  4. Low noise level and low vibration level.
  5. Constant pressure oil circulating system.
  6. Convenient gas ballast valve control.
  7. Simple repairing and maintenance.
  8. Convenient cooling system by air-cooled and water-cooled (MVP-324)
Design Operation Principle
  • MVP Series is two-stage oil sealed rotary vane vacuum pump. It is new concept out of conventional design to satisfy customer’s needs.
  • The structure of the pump
    It consists of pump housing, oil casing, motor housing, pump base and pump module. It occupies oil anti-suckback valve and gas ballast for protecting pump and vacuum system.
  • Operating Principle
    The pump and motor are connected by flexible coupling. As the rotor rotates two vanes, placed in rotor vane groove, turn making contact with the internal surface of the cylinder due to centrifugal force.
    The inhaled gas is trapped between two vanes as the rotating vane passes through the inlet passage and this trapped gas is compressed as it rotates toward exhaust valve and eventually exhaust through valve. The vacuum oil is supplied to the moving parts for lubrication and tight sealing.