The CPT chemical process pump is designed for continous operation in process industries for pumping clean, abrasive or corrosive liquids. This pump is designed to exceed ANSI (ASME B73.1M) pump standards. Impeller Clearance Adjustment - Quick and accurate impeller adjustments without the use of a feeler gauge or removal pump - Assures concentricity and bearing alignment throughout the impeller’s adjustable range - No snap ring required to hold bearing