EBARA OPTIMA-3MS1 PRO-DRAINER Manual Sump Pump, 1/3 HP, Single Phase, 115 Volt. EBARA's PRO Drainer; series offers a complete solution for the pumping of slurry or semi-dirty water. The PRO Drainer series contain high quality stainless steel components. This efficient, versatile, and reliable pump is ideally suited for many industrial, commercial, residential, and agricultural liquid applications including fixed or portable installations.