With A Maximum Pump Capacity Of 5,500 Litres Per Hour, The Sp 1 Dirt Is The Perfect Entry-Level Model For Quickly Pumping Out And Circulating Water From Water Butts And Garden Ponds. It Reliably Pumps Clean Or Dirty Water With Dirt Particles Up To 20 Millimetres In Size. For Larger Dirt Particles, An Optional Prefilter Can Be Attached Which Protects The Pump Impeller Against Blockages.