The Evolution ESS Series pump is a high performance pond & water feature pump which is a true 2.5 inch suction and discharge. This Evolution Pond Pump comes with quick disconnect unions  that allow you to choose 2.5 inch and/or  2 inch plumbing to meet your application needs

The ESS Series pumps is a self priming, high performance, low amp draw pump and offers great flow rates with high energy efficiency and is extremely quiet. The pump offers a range of flow rates from 5200 GPH to 9600 GPH and features a large built-in strainer basket/algae trap designed for easy serviceability and installation. These pumps are some of the most reliable pumps on the market and are the perfect choice for pond and water features builders. Designed for out of pond applications these are NOT SUBMERSIBLE PUMPS.