Clarkes top quality submersible pump handles both clean and dirty water. Robust build, and a heavy duty impellor means the CSV2A Vortex Pump will not only handle dirty, brackish water, it's also able to pass solids up to 30mm diameter. And, even better, it's fitted with an automatic float switch, a simple yet clever device that switches the pump on as the water level rises, and switches it off once the pump has done it's job and reduced the water level.