BA series centrifugal pumps are equipped with a vacuum system and are therefore dry self priming. These vacuum-assisted centrifugal pumps are used for sewer bypassing, dewatering and flood control. The high head pumps are suitable for a variety of applications. The BA pumps are driven by either a diesel engine or an electric motor and are assembled as a pumpset in a sound attenuated canopy or open frame. How does a dry prime pump work? » ​