Grundfos 96549174 Self-Priming Valve. This Self-Priming system is an all-in-one unit that comes equipped with a pump, motor, tank, sensors and check valve. The controller and sensors provide users with a pump that starts automatically when water is depleted and stops automatically also. The Grundfos 96549174 Self-Priming Valve features a user-friendly control panel with ON/OFF buttons and indicator lights, and hydraulic design with internal cooling, making the pump very quiet, which makes it suitable for many applications. This Grundfos 96549174 Self-Priming Valve facilitates installation and start-up of the pump and provides more reliable water supply in commercial and industrial installations where there is a risk of dry running and leakages in suction hose or pipes.