The Grundfos SQ 3 inch submersible pumps offer a wide performance range to suit your individual requirements. The SQ is a compact 3 inch multistage centrifugal pump that can be installed in a borehole no larger than the pump itself. With built-in electronics SQ pumps are very easy to install and operate and guarantee reliable water supply at all times. These flexible and compact pumps offer excellent efficiency levels and will supply pump heads up to 200m. If the SQ pump is connected to the Grundfos CU 301 control box, it enables the creation of a constant pressure water supply.