Used Model SAMR-15037 Westfalia De-Sludger Clarifier. Stainless steel contact surfaces. 4650 RPM max. bowl speed. Bowl has 4.25 gallon sludge capacity. Rated to 100 GPM, with 40 HP, 3565 RPM, 230/460 volt motor. Serial No. 1638 002/1 (Qty - 2 units available)