Automatic Vacuum Priming Systems are used when one or multiple pumps are required to start without delay by providing a continuous prime to all connected pumps. Once intial prime is established the system continues to automatically maintain the prime, allowing immediate start-up of pumps.
FIG.3 Above shows a typical layout for a pressure controlled Automatic Vacuum Priming System. With this type of system there are few restrictions to where pumps are located or whether suctions are taken at different levels. With proper consideration in the layout of the interconnected vacuum piping between the priming system and the pumps, the priming system can also be located wherever is most convenient.