Built to ensure extended operational life, our Seltorque solids handling pumps are made with only the highest quality of materials available. Selwood ‘S’ solids pumps use vortex technology to deliver market leading solids handling for the most demanding sewage, sludge and bentonite applications. Vortex Pumps Vortex technology is currently used in S100, S150, S200 and S300, our signature Seltorque vortex flow pumps. The S100, S150 and S200 are also available as a value-engineered option for lesser regulated areas. Robust Design As with all Selwood products, our solids handling pumps can be supplied with accessories and other equipment as a complete package suited for any application.