VAC Centrifugal Pump

A new generation of dirty water vacuum pumps


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A new generation of dirty water vacuum pumps, based on the principle of the liquid ring system. This compact pump combines all performances of diaphragm, piston and centrifugal pumps and will pump continuously, by means of the specially developed rotor, on liquids, air or gasses in any mixture.

  • (Emergency) bilge pump
  • Bilge-ballast pump
  • General service pump
  • Vacuum pump
  • Gland-leaking water pump
  • For chemical industries
  • Draining holds
  • Emptying vessels
  • Well point systems


Advantages VAC-2000

  • Enormous air capacity
  • Wear-resistant
  • Dry-running protection
  • For direct or V-belt drive
  • No diaphragms
  • Low weight
  • Compact design
  • Also operating without non-return valve


Design Features

Free rotating stainless rotor, stainless steel rotor housing, stainless steel wear plate. Protected against dry-running by oil lubricated seal. 

Nominal diameter (DN) 65 to 100
Flow rate - 50 Hz Up to 70 m³/h (300 US gpm)
Flow rate - 60 Hz Up to 70 m³/h (300 US gpm)
Head Up to 19 m (60 ft)
Pressure Up to 3.5 bar (50 psi)
Temperature Up to 80°C (176°F)
Motor Standard and EX motors
VFD Direct or Bulkhead/Wall-mounted


Download Brochures


  • English
  • American
  • Dutch
Download Manuals

VAC-2001 (T1451)

  • English
  • Danish
  • Russia

VAC-4001 (T1449)

  • English
  • Danish









Selection programs

Find curves for existing pumps, get GA drawings for initial designs and compare efficiency, motor power, NPSH and other data to find the right pump.

DESMI Centrifugal Pumps

The range of centrifugal pumps is made to meet the requirements of a wide array of different applications. Be it district heating, cooling, HVAC, fire-fighting or perhaps pumps for the engine room of a maritime vessel, a centrifugal pump is often the ideal choice.

DESMI's centrifugal pumps are characterised by high-level efficiency and low NPSH values. Our vertical pumps require minimal space and provide easy access for maintenance of the pump's rotating parts.

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DESMI is a global company

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