Core E1 Transfer PumpGet in the flow with Gracos revolutionary NEW Core electric transfer pumps; designed to optimize material supply and minimize downtime. Quieter and less expensive to operate than traditional pneumatic pumps, the new electric pumps can communicate with the Reactor 3 to give you a fully connected system. When connected to the Reactor 3 system, the Core E1 transfer has the ability for system communication and auto feed pump shutdown. Supply Pump Shutdown