Only logistic problems could stop SPECO® topping their triple pitch 3.5 metre diameter, 23 metre long, and more than 30 ton weighing monster powered by a 500 kW drive supplied in 1993 to a municipal wastewater treatment plant in Rome. The 1990s brought major changes to the wastewater industry.
The dramatically decreasing demand for large Archimedean Water Screw Pumps in the industrialised countries made SPECO® now focus on similar technologies, such as screening and compacting. However, in recent years the demand for Water Screw Pumps, which are now supplied by WAMGROUP associates RONCUZZI®, has increased again.
The flow rate can be modified by adjusting the speed without moving its yield too far from the maximum value.
PA Archimedean Screw Pumps are used in wastewater treatment, in drainage and irrigation applications, in the food packaging industry, and generally whenever water (even if containing suspended solids) has to be lifted.
- Outside diameters up to 4 metres (13 ft)
- Flow rates up to 6,000 litres per second (12,700 cfm) = 21,600 m³/h
- Internal pipe lengths up to 28 metres (31 yds)
- Drive power installed up to 500 kW (680 HP) and more