ACO PowerVAC

ACO PowerVAC – Vacuum Generation & Wastewater Transfer Units

The ACO PowerVAC vacuum pumping unit forms the centrepiece of the centralised vacuum toilet collection and transfer system. The ACO PowerVAC unit is designed to create a powerful vacuum within the vacuum line network to ensure efficient and reliable wastewater collection and transfer.

The positive displacement pumping principle allows a transfer of wastewater directly to a wastewater treatment plant or holding tank without the need for a temporary collection reservoir. The compact, close coupled pump design provides a small footprint which makes the unit ideal where space is limited. The ACO PowerVAC unit is simple to install and service thanks to its compact and well thought-out Easy-to-Maintain design.

ACO PowerVAC
Efficient & flexible vacuum generation & sewage transfer units for marine applications

  • Designed for vacuum toilet, black water collection systems & wastewater transfer
  • Powerful vacuum generating and two-phase wastewater/air pumping unit
  • Different models and pump capacities available including high-head wastewater transfer pump options.
  • Robust & reliable pump design with close coupled electric drive.
  • High quality pump materials & cartridge type mechanical seal system.
  • Pumps are designed according to the easy-to-maintain principle. Easy access to the pumping elements, wear parts and sealing system by simply removing the ‘wet end’ pump cover

Process description
The pump head provides two intermeshed rotors which are each fixed to a gear driven shaft. The shafts rotate in opposite directions. The rotating motion of the rotors creates an expanding cavity on the suction side which maintains a strong vacuum at the inlet of the pump. Wastewater and air enter and fill the suction side of the pump. The rotors carry the two-phase fluid around the housing to the discharge side where it is expelled out of the pump by the closing cavity.

The PowerVAC units are self-priming and insensitive to dry-running and foreign objects. Therefore there is no requirement for macerating of black water in front of the pump which can improve the solid separation process in downstream treatment systems aboard the vessel.

 

Operating Data PowerVAC Vacuum Collection Units

 

PowerVAC Nominal Power Voltage Air capacity up to Water capacity up to Max. differential head up to Flushing capacity up to
Type kW Volts m3/h m3/h metres flushes/hour*
50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz
PV120 2.2 2.6 400 460 13.0 15.6 11.8 14.2 20 20 90 110
PV225 2.2 2.6 400 460 18.5 22.2 16.8 20.2 20 20 130 150
PV360 4.0 4.6 400 460 37.0 44.3 33.7 40.3 20 20 250 300
PV400 5.5 6.3 400 460 40.8 49.0 35.5 42.8 20 20 350 390
PV585 7.5 8.6 400 460 60.0 72.0 50.0 60.3 20 20 540 670

 

*Based on vacuum toilet air consumption of 60 ltr per flush at 50% vacuum, water consumption 1 – 1,5 ltr per flush.

 

Operating Data PowerVAC Wastewater Transfer Units

 

PowerVAC Nominal  Power Voltage Water capacity up to Max. differential head up to
Type kW Volts m3/h meters
50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz 50 Hz 60 Hz
PV120 3.0 3.5 400 460 13.0 15.6 40 40
PV225 4.0 4.6 400 460 18.5 22.2 40 40

 

 

The ACO PowerVAC unit creates a strong vacuum up to 8 metres suction lift and pumps effluent direct to a wastewater treatment plant, holding tank or to shore discharge.

High head transfer pump versions are provided with powerful electric drives to meet the most demanding of discharge requirements.

In addition to the standard versions listed in the tables above, bespoke specifications ae available on request to match on-board requirements.

 

 

Dimensions

 

PowerVAC Nominal Power L W H Weight Connector DN
inlet outlet
Type 50Hz 60Hz mm mm mm kg mm mm
PV120 2.2 2.6 725 250 365 95 65 50
PV120H 3.0 3.5 730 250 370 100 65 50
PV225 2.2 2.6 770 250 365 100 65 50
PV225H 4.0 4.6 785 250 380 110 65 50
PV360 4.0 4.6 824 250 380 110 65 50
PV400 5.5 6.3 770 350 410 140 65 50
PV585 7.5 8.6 890 350 410 175 65 50

 

 

 

Size range

 

ACO-PowerVAC-size-range