How a WMW Vacuum Pumpout System Works
Our pumpout systems are all based on the vacuum principle, which is fast, efficient, and reliable. The effluent is pumped in two cycles:
Vacuum Cycle:
The suction side of the vacuum pump (IN) is connected to the pump tank and sucks out the air. The foul air that is sucked out of the pump tank is vented through the discharge line into the sewer: No odour!
The vacuum in the pump tank moves the effluent from the boat tank into the pump tank.
The electronic control monitors the effluent level and switches the pump to the discharge cycle when the pump tank is full & back to the vacuum cycle after the pump tank is emptied. No moving part of the pump is in contact with the effluent.
Discharge Cycle:
In the discharge cycle (pressure cycle) the pump moves the effluent from the pump tank to the sewer. The pressure side of the vacuum pump (OUT) is connected to the pump tank (by turning the air reverse valve) and pressurizes it. The effluent flows from the pump tank to the sewer.
Advantages of a WMW Vacuum System:
- No moving part of the pump is in contact with effluent, thus not sensitive to solid particles, like bottle caps or even stones
- No parts to replace regularly, like diaphragms or transport hoses in peristaltic pumps
- No clogs
- No priming ever
- Highest reliability
- Highest efficiency - high flow rate at low motor power (e.g. 20 GPM with 1/3 Hp motor)
- High suction lift and discharge head (with special design up to 120 ft discharge head)
- Endless dry running capability
- Easy winterizing - Intake and discharge lines can be cleared without additional devices
- Remote stands can be added easily - Remote stands offer the possibility to move the pumpout system away from the dock to almost any location in the marina. Multiple remote stands (=intake points) can be served with only one pumpout system.
- Lifetime warranty on electronic circuit boards
- Coin / token boxes, bill validators, card readers etc. available
- Most models are available for sewage, bilge water, and oil
- Our pumpout system does not emulsify water and oil when pumping bilge water into an oil separator