Wacker PG3A 3 inch Submersible Pump 4.8 HP 264 GPMWacker PG3A 3 inch Submersible Pump 4. 8 HP 264 GPM Wacker's PG centrifugal pump series has been designed to handle the removal of relatively clean job site water. With its self priming centrifugal pumping action and overall compact size, the pump is ideal for the contractor with the need for temporary water removal. Features : Cast iron impeller and volute are wear resistant for long life and minimal service Ideal for temporary water removal High