The ancients used what we call Archimedes’ screw to raise water. But a Wirtz pump as [Steve Mould] shows in the video below, is another kind of spiral pump that is also very old and uses the ...

Severn Trent Water plans to pump 8,000 litres a second with new Archimedes pump system supplied by Deritend Deritend has received an order from Severn Trent Water through Norwest Holst to supply and ...