Spaans Babcock is the oldest and largest manufacturer of screw pumps and has delivered more than 30,000 screw pumps worldwide. The vast knowledge and experience held in this company is turned into an advantage for Stjernholm customers when it comes to transporting water or sludge within a purification plant or with regards to dewatering low-lying areas.
The screw pumps are available in many different sizes and with a capacity from 15 litres/sec. to 11 m3/sec. No matter which model is needed, the pump features a simple design that makes it incredibly reliable. Thanks to the low operating speed, the pump handles even high levels of strain year after year without any problems.
Through an open pump structure with large spaces between the screw threads the pump is well-suited for transporting sludge with coarse particles. In addition, the screw is very gentle towards delicate biological structures which are not destroyed during transport.
The pump does not require a well for medium collection and the pump capacity is adjusted depending on water/sludge influx. It can even run without a drop of water, removing the need for installation of level gauges and similar equipment to prevent dry runs.
Spaans screw pumps require only minimal maintenance. Compared to equipment such as centrifuge pumps, the requirements are almost non-existent. Therefore, screw pumps are also well-suited for installation in places where staff does not pass every day.