OPTIMA-3AS1 Stainless Steel Automatic Pro Drainer Sump Pump 1/3HP 115V EBARA’s Model EPD and Optima “PRO Drainer™” are a complete solution for the pumping of slurry or semi-dirty water. Manufactured of high quality, corrosive resistant 304 stainless steel components, the PRO Drainer series are lighter weight compared to conventional cast iron pumps. This efficient, versatile and reliable pump is available in fractional horsepowers and suited for many industrial, commercial, residential and agricultural liquid applications and ideal for fixed or portable installations.